|
Changes in Accumulated Other Comprehensive Income (Details) (USD $)
In Millions, unless otherwise specified
|
3 Months Ended |
|
Mar. 31, 2015
|
Mar. 31, 2014
|
| Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |
|
|
| Accumulated other comprehensive income, beginning of period |
$ (741) |
|
| Aggregate adjustment for the period |
(211) |
(46) |
| Accumulated other comprehensive income, end of period |
(950) |
(279) |
| Foreign currency translation adjustments |
|
|
| Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |
|
|
| Accumulated other comprehensive income, beginning of period |
(333) |
(17) |
| Aggregate adjustment for the period |
(232) |
(10) |
| Accumulated other comprehensive income, end of period |
(565) |
(27) |
| Unrealized gains (losses) on derivatives |
|
|
| Accumulated Other Comprehensive Income (Loss) [Line Items] |
|
|
| Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax |
6 |
7 |
| Tax effect of reclassification to income |
5 |
1 |
| Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |
|
|
| Accumulated other comprehensive income, beginning of period |
(78) |
2 |
| Other comprehensive income before reclassifications (net of tax effect) |
(23) |
(34) |
| Reclassification to income (net of tax effect) |
19 |
1 |
| Accumulated other comprehensive income, end of period |
(82) |
(31) |
| Pension and postretirement plans |
|
|
| Accumulated Other Comprehensive Income (Loss) [Line Items] |
|
|
| Tax effect of current period changes in fair value |
4 |
0 |
| Tax effect of reclassification to income |
1 |
0 |
| Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |
|
|
| Accumulated other comprehensive income, beginning of period |
(330) |
(222) |
| Other comprehensive income before reclassifications (net of tax effect) |
24 |
(1) |
| Reclassification to income (net of tax effect) |
3 |
2 |
| Accumulated other comprehensive income, end of period |
$ (303) |
$ (221) |