| Line | Label | Object Class | Period Type | Balance | Report ElementName |
|---|---|---|---|---|---|
| 1 | 300000 - Disclosure - Cash and Cash Equivalents | [Network] | http://fasb.org/us-gaap/role/disclosure/CashAndCashEquivalents | ||
| 2 | Cash and Cash Equivalents [Abstract] | Abstract | us-gaap:CashAndCashEquivalentsAbstract | ||
| 3 | Cash and Cash Equivalents Disclosure [Text Block] | Concept (Text Block (HTML)) | For Period | us-gaap:CashAndCashEquivalentsDisclosureTextBlock | |
| 4 | Schedule of Cash and Cash Equivalents [Table Text Block] | Concept (Text Block (HTML)) | For Period | us-gaap:ScheduleOfCashAndCashEquivalentsTableTextBlock | |
| 5 | Schedule of Cash and Cash Equivalents [Table] | Table | us-gaap:ScheduleOfCashAndCashEquivalentsTable | ||
| 6 | Cash and Cash Equivalents [Axis] | Axis | us-gaap:CashAndCashEquivalentsAxis | ||
| 7 | Cash and Cash Equivalents [Domain] | Member | us-gaap:RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember | ||
| 8 | Cash [Member] | Member | us-gaap:CashMember | ||
| 9 | Demand Deposits [Member] | Member | us-gaap:DemandDepositsMember | ||
| 10 | Cash Equivalents [Member] | Member | us-gaap:CashEquivalentsMember | ||
| 11 | Bank Time Deposits [Member] | Member | us-gaap:BankTimeDepositsMember | ||
| 12 | Certificates of Deposit [Member] | Member | us-gaap:CertificatesOfDepositMember | ||
| 13 | Commercial Paper [Member] | Member | us-gaap:CommercialPaperMember | ||
| 14 | Interest-bearing Deposits [Member] | Member | us-gaap:InterestBearingDepositsMember | ||
| 15 | Money Market Funds [Member] | Member | us-gaap:MoneyMarketFundsMember | ||
| 16 | US States and Political Subdivisions Debt Securities [Member] | Member | us-gaap:USStatesAndPoliticalSubdivisionsMember | ||
| 17 | US Government Corporations and Agencies Securities [Member] | Member | us-gaap:USGovernmentCorporationsAndAgenciesSecuritiesMember | ||
| 18 | US Treasury Securities [Member] | Member | us-gaap:USTreasurySecuritiesMember | ||
| 19 | Cash and Cash Equivalents [Line Items] | LineItems | us-gaap:CashAndCashEquivalentsLineItems | ||
| 20 | Cash and Cash Equivalents, at Carrying Value [Abstract] | Abstract | us-gaap:CashAndCashEquivalentsAtCarryingValueAbstract | ||
| 21 | Cash and Due from Banks [Abstract] | Abstract | us-gaap:CashAndDueFromBanksAbstract | ||
| 22 | Cash | Concept (Monetary) | As Of | Debit | us-gaap:Cash |
| 23 | Due from Banks | Concept (Monetary) | As Of | Debit | us-gaap:DueFromBanks |
| 24 | Cash and Due from Banks, Total | Concept (Monetary) | As Of | Debit | us-gaap:CashAndDueFromBanks |
| 25 | Interest-bearing Deposits in Banks and Other Financial Institutions | Concept (Monetary) | As Of | Debit | us-gaap:InterestBearingDepositsInBanks |
| 26 | Cash Equivalents, at Carrying Value [Abstract] | Abstract | us-gaap:CashEquivalentsAtCarryingValueAbstract | ||
| 27 | Asset-Backed Securities, at Carrying Value | Concept (Monetary) | As Of | Debit | us-gaap:AssetBackedSecuritiesAtCarryingValue |
| 28 | Certificates of Deposit, at Carrying Value | Concept (Monetary) | As Of | Debit | us-gaap:CertificatesOfDepositAtCarryingValue |
| 29 | Commercial Paper, at Carrying Value | Concept (Monetary) | As Of | Debit | us-gaap:CommercialPaperAtCarryingValue |
| 30 | Credit and Debit Card Receivables, at Carrying Value | Concept (Monetary) | As Of | Debit | us-gaap:CreditAndDebitCardReceivablesAtCarryingValue |
| 31 | Money Market Funds, at Carrying Value | Concept (Monetary) | As Of | Debit | us-gaap:MoneyMarketFundsAtCarryingValue |
| 32 | Municipal Debt Securities, at Carrying Value | Concept (Monetary) | As Of | Debit | us-gaap:MunicipalDebtSecuritiesAtCarryingValue |
| 33 | Time Deposits, at Carrying Value | Concept (Monetary) | As Of | Debit | us-gaap:TimeDepositsAtCarryingValue |
| 34 | US Government Securities, at Carrying Value | Concept (Monetary) | As Of | Debit | us-gaap:USGovernmentSecuritiesAtCarryingValue |
| 35 | US Government Agencies Securities, at Carrying Value | Concept (Monetary) | As Of | Debit | us-gaap:USGovernmentAgenciesSecuritiesAtCarryingValue |
| 36 | Other Cash Equivalents, at Carrying Value | Concept (Monetary) | As Of | Debit | us-gaap:OtherCashEquivalentsAtCarryingValue |
| 37 | Cash Equivalents, at Carrying Value, Total | Concept (Monetary) | As Of | Debit | us-gaap:CashEquivalentsAtCarryingValue |
| 38 | Cash and Cash Equivalents, at Carrying Value, Total | Concept (Monetary) | As Of | Debit | us-gaap:CashAndCashEquivalentsAtCarryingValue |
| 39 | Additional Cash and Cash Equivalent Related Text | Concept (Text/String) | For Period | us-gaap:AdditionalCashAndCashEquivalentRelatedText | |
| 40 | Schedule of Restricted Cash and Cash Equivalents [Table Text Block] | Concept (Text Block (HTML)) | For Period | us-gaap:ScheduleOfRestrictedCashAndCashEquivalentsTextBlock | |
| 41 | Schedule of Restricted Cash and Cash Equivalents [Table] | Table | us-gaap:ScheduleOfRestrictedCashAndCashEquivalentsTable | ||
| 42 | Restricted Cash and Cash Equivalents [Axis] | Axis | us-gaap:RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis | ||
| 43 | Cash and Cash Equivalents [Domain] | Member | us-gaap:RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember | ||
| 44 | Cash [Member] | Member | us-gaap:CashMember | ||
| 45 | Demand Deposits [Member] | Member | us-gaap:DemandDepositsMember | ||
| 46 | Cash Equivalents [Member] | Member | us-gaap:CashEquivalentsMember | ||
| 47 | Bank Time Deposits [Member] | Member | us-gaap:BankTimeDepositsMember | ||
| 48 | Certificates of Deposit [Member] | Member | us-gaap:CertificatesOfDepositMember | ||
| 49 | Commercial Paper [Member] | Member | us-gaap:CommercialPaperMember | ||
| 50 | Interest-bearing Deposits [Member] | Member | us-gaap:InterestBearingDepositsMember | ||
| 51 | Money Market Funds [Member] | Member | us-gaap:MoneyMarketFundsMember | ||
| 52 | US States and Political Subdivisions Debt Securities [Member] | Member | us-gaap:USStatesAndPoliticalSubdivisionsMember | ||
| 53 | US Government Corporations and Agencies Securities [Member] | Member | us-gaap:USGovernmentCorporationsAndAgenciesSecuritiesMember | ||
| 54 | US Treasury Securities [Member] | Member | us-gaap:USTreasurySecuritiesMember | ||
| 55 | Restricted Cash and Cash Equivalents Items [Line Items] | LineItems | us-gaap:RestrictedCashAndCashEquivalentsItemsLineItems | ||
| 56 | Restricted Cash and Cash Equivalent Item, Description | Concept (Text/String) | For Period | us-gaap:RestrictedCashAndCashEquivalentItemDescription | |
| 57 | Restricted Cash and Cash Equivalents, Current | Concept (Monetary) | As Of | Debit | us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue |
| 58 | Restricted Cash and Cash Equivalents, Noncurrent | Concept (Monetary) | As Of | Debit | us-gaap:RestrictedCashAndCashEquivalentsNoncurrent |
| 59 | Restricted Cash and Cash Equivalents | Concept (Monetary) | As Of | Debit | us-gaap:RestrictedCashAndCashEquivalents |
| 60 | Restricted Cash and Cash Equivalent Item, Purpose | Concept (Text/String) | For Period | us-gaap:RestrictedCashAndCashEquivalentItemPurpose | |
| 61 | Restricted Cash and Cash Equivalent Item, Agreement | Concept (Text/String) | For Period | us-gaap:RestrictedCashAndCashEquivalentItemAgreement | |
| 62 | Schedule of Compensating Balances [Table Text Block] | Concept (Text Block (HTML)) | For Period | us-gaap:ScheduleOfCompensatingBalancesTextBlock | |
| 63 | Schedule of Compensating Balances [Table] | Table | us-gaap:ScheduleOfCompensatingBalancesTable | ||
| 64 | Cash and Cash Equivalents [Axis] | Axis | us-gaap:CashAndCashEquivalentsAxis | ||
| 65 | Cash and Cash Equivalents [Domain] | Member | us-gaap:RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember | ||
| 66 | Cash [Member] | Member | us-gaap:CashMember | ||
| 67 | Demand Deposits [Member] | Member | us-gaap:DemandDepositsMember | ||
| 68 | Cash Equivalents [Member] | Member | us-gaap:CashEquivalentsMember | ||
| 69 | Bank Time Deposits [Member] | Member | us-gaap:BankTimeDepositsMember | ||
| 70 | Certificates of Deposit [Member] | Member | us-gaap:CertificatesOfDepositMember | ||
| 71 | Commercial Paper [Member] | Member | us-gaap:CommercialPaperMember | ||
| 72 | Interest-bearing Deposits [Member] | Member | us-gaap:InterestBearingDepositsMember | ||
| 73 | Money Market Funds [Member] | Member | us-gaap:MoneyMarketFundsMember | ||
| 74 | US States and Political Subdivisions Debt Securities [Member] | Member | us-gaap:USStatesAndPoliticalSubdivisionsMember | ||
| 75 | US Government Corporations and Agencies Securities [Member] | Member | us-gaap:USGovernmentCorporationsAndAgenciesSecuritiesMember | ||
| 76 | US Treasury Securities [Member] | Member | us-gaap:USTreasurySecuritiesMember | ||
| 77 | Compensating Balances [Line Items] | LineItems | us-gaap:CompensatingBalancesLineItems | ||
| 78 | Compensating Balance, Description | Concept (Text/String) | For Period | us-gaap:CompensatingBalanceDescription | |
| 79 | Compensating Balance, Amount | Concept (Monetary) | As Of | Debit | us-gaap:CompensatingBalanceAmount |
| 80 | Compensating Balance, Purpose | Concept (Text/String) | For Period | us-gaap:CompensatingBalancePurpose | |
| 81 | Compensating Balance, Agreement | Concept (Text/String) | For Period | us-gaap:CompensatingBalanceAgreement | |
| 82 | Cash, Insured and Uninsured [Abstract] | Abstract | us-gaap:CashInsuredAndUninsuredAbstract | ||
| 83 | Cash, FDIC Insured Amount | Concept (Monetary) | As Of | Debit | us-gaap:CashFDICInsuredAmount |
| 84 | Cash, Uninsured Amount | Concept (Monetary) | As Of | Debit | us-gaap:CashUninsuredAmount |
| 85 | Cash, Uninsured Amount, Commentary | Concept (Text/String) | For Period | us-gaap:CashUninsuredAmountCommentary | |
| 86 | Disclosure Text Block Supplement [Abstract] | Abstract | us-gaap:DisclosureTextBlockSupplementAbstract | ||
| 87 | Cash, Cash Equivalents, and Marketable Securities [Text Block] | Concept (Text Block (HTML)) | For Period | us-gaap:CashCashEquivalentsAndMarketableSecuritiesTextBlock | |
| 88 | Cash, Cash Equivalents, and Short-term Investments [Text Block] | Concept (Text Block (HTML)) | For Period | us-gaap:CashCashEquivalentsAndShortTermInvestmentsTextBlock | |
| 89 | Investments in Debt and Equity Instruments, Cash and Cash Equivalents, Unrealized and Realized Gains (Losses) [Text Block] | Concept (Text Block (HTML)) | For Period | us-gaap:InvestmentsInDebtAndEquityInstrumentsCashAndCashEquivalentsUnrealizedAndRealizedGainsLossesTextBlock | |
| 90 | Table Text Block Supplement [Abstract] | Abstract | us-gaap:TableTextBlockSupplementAbstract | ||
| 91 | Cash, Cash Equivalents and Investments [Table Text Block] | Concept (Text Block (HTML)) | For Period | us-gaap:ScheduleOfCashCashEquivalentsAndShortTermInvestmentsTableTextBlock |