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Effects of One Percentage Point Change In Assumed Health Care Cost Trend Rates (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended |
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Dec. 31, 2013
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| Defined Benefit Plan Disclosure [Line Items] | |
| Effect on 2013 service and interest cost, Increase | $ 184 |
| Effect on 2013 service and interest cost, Decrease | (150) |
| Effect on postretirement benefit obligation as of December 31, 2013, Increase | 2,539 |
| Effect on postretirement benefit obligation as of December 31, 2013, Decrease | $ (2,086) |
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- Details
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- Definition
Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The effect of a one-percentage-point increase in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The effect of a one-percentage-point increase in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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