Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets (Detail) - Qualified defined benefit pension plans - USD ($) $ in Millions |
Dec. 31, 2016 |
Dec. 31, 2015 |
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| Plans where ABO was in excess of plan assets | |||||||
| Projected benefit obligation | $ 44,946 | $ 43,575 | |||||
| Less: fair value of plan assets | 31,091 | 31,768 | |||||
| Unfunded status of plans | [1] | (13,855) | (11,807) | ||||
| Plans where ABO was less than plan assets | |||||||
| Projected benefit obligation | 118 | 127 | |||||
| Less: fair value of plan assets | 326 | 328 | |||||
| Funded status of plans | [2] | $ 208 | $ 201 | ||||
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- Definition The unfunded or funded status of pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented. No definition available.
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- Definition Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations Less Than Plan Assets [Abstract] No definition available.
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- Definition If aggregate disclosures are presented, the aggregate fair value of plan assets for pension plans with accumulated benefit obligations less than plan assets as of the measurement date of each statement of financial position presented. No definition available.
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- Definition If aggregate disclosures are presented, the aggregate projected benefit obligation for pension plans with accumulated benefit obligations less than plan assets as of the measurement date of each statement of financial position presented. No definition available.
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- Definition The unfunded or funded status of pension plans with accumulated benefit obligations less than plan assets as of the measurement date of each statement of financial position presented. No definition available.
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- References No definition available.
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- Definition If aggregate disclosures are presented, the aggregate fair value of plan assets for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition If aggregate disclosures are presented, the aggregate projected benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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