Rendering

Component: (Network and Table)
Network
041202 - Disclosure - Pension And Postretirement Benefits (Change In The Projected Benefit Obligation) (Details)
(http://att.com/role/PensionAndPostretirementBenefitsChangeInTheProjectedBenefitObligationDetails)
TableSchedule of Defined Benefit Plans Disclosures [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000732717 (http://www.sec.gov/CIK)
Defined Benefit Plan Disclosure [Line Items]Period [Axis]
2013-01-01 - 2013-12-31
2012-01-01 - 2012-12-31
2011-01-01 - 2011-12-31
Defined Benefit Plans Disclosures, Defined Benefit Plans [Axis]Defined Benefit Plans Disclosures, Defined Benefit Plans [Axis]Defined Benefit Plans Disclosures, Defined Benefit Plans [Axis]
Pension Benefit [Member]Postretirement Benefit [Member]Supplemental Retirement Plans [Member]Defined Benefit Plans [Domain]Pension Benefit [Member]Postretirement Benefit [Member]Supplemental Retirement Plans [Member]Pension Benefit [Member]Postretirement Benefit [Member]Supplemental Retirement Plans [Member]
Benefit obligation at beginning of year
58,911,000,000  
37,431,000,000  
 
 
56,110,000,000  
34,953,000,000  
 
 
 
 
Service cost - benefits earned during the period
1,321,000,000  
352,000,000  
9,000,000  
 
1,216,000,000  
336,000,000  
10,000,000  
1,186,000,000  
362,000,000  
14,000,000  
Interest cost on projected benefit obligation
2,429,000,000  
1,532,000,000  
101,000,000  
 
2,800,000,000  
1,725,000,000  
116,000,000  
2,958,000,000  
2,051,000,000  
126,000,000  
Amendments
0  
(4,460,000,000) 
 
 
(905,000,000) 
(2,768,000,000) 
 
 
 
 
Actuarial (gain) loss
(2,390,000,000) 
(2,098,000,000) 
 
 
6,707,000,000  
4,844,000,000  
 
 
 
 
Special termination benefits
255,000,000  
1,000,000  
 
250,000,000  
12,000,000  
5,000,000  
 
 
 
 
Benefits paid
(3,966,000,000) 
(2,473,000,000) 
 
 
(5,729,000,000) 
(2,608,000,000) 
 
 
 
 
Transfer for sale of Advertising Solutions segment
0  
0  
 
 
(149,000,000) 
(207,000,000) 
 
 
 
 
Plan transfers
0  
0  
 
 
(1,151,000,000) 
1,151,000,000  
 
 
 
 
Benefit obligation at end of year
56,560,000,000  
 
30,285,000,000  
 
 
 
 
 
58,911,000,000  
 
37,431,000,000  
 
 
 
56,110,000,000  
 
34,953,000,000