Component: (Network and Table) | |
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Network | 2416411 - Disclosure - Pension And Other Postretirement Benefits (Components Of The Plans' Net Periodic Benefits Cost) (Details) (http://www.columbiapipelinepartners.com/role/PensionAndOtherPostretirementBenefitsComponentsOfPlansNetPeriodicBenefitsCostDetails) |
Table | Schedule of Defined Benefit Plans Disclosures [Table] |
Reporting Entity [Axis] | 0001420783 (http://www.sec.gov/CIK) |
Defined Benefit Plan Disclosure [Line Items] | Period [Axis] | |||||
---|---|---|---|---|---|---|
2015-01-01 - 2015-12-31 | 2014-01-01 - 2014-12-31 | 2013-01-01 - 2013-12-31 | ||||
Scenario [Axis] | Scenario [Axis] | Scenario [Axis] | ||||
Scenario, Unspecified [Domain] | Predecessor [Member] | Predecessor [Member] | ||||
Defined Benefit Plans and Other Postretirement Benefit Plans [Axis] | Defined Benefit Plans and Other Postretirement Benefit Plans [Axis] | Defined Benefit Plans and Other Postretirement Benefit Plans [Axis] | ||||
Pension Plan [Member] | Other Postretirement Benefit Plan [Member] | Pension Plan [Member] | Other Postretirement Benefit Plan [Member] | Pension Plan [Member] | Other Postretirement Benefit Plan [Member] | |
Service Cost | 5,300,000 1 | 1,000,000 1 | 4,800,000 1 | 1,100,000 1 | 4,800,000 | 1,500,000 |
Interest cost | 12,500,000 1 | 4,000,000 1 | 13,700,000 1 | 4,600,000 1 | 12,600,000 | 4,900,000 |
Expected return on assets | ( | ( | ( | ( | ( | ( |
Amortization of prior service cost | (900,000) | 100,000 | (1,000,000) | 100,000 | (900,000) | 100,000 |
Recognized actuarial loss | ( | ( | ||||
Net Periodic Benefit Costs | ( | ( | ( | |||
Settlement loss | 0 | 0 | 0 | 0 | 12,400,000 | 0 |
Total Net Periodic Benefits Cost | 1,500,000 | (12,500,000) | 300,000 | (10,800,000) | 17,500,000 | (6,000,000) |