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Equity (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2014 | Mar. 31, 2013
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Beginning Balance | $ 7,651 | $ 7,514
Net income | 66 | 199
Total foreign currency translation adjustment, net of income tax | 11 | (35)
Total change in derivative fair value, net of income tax | (101) | 8
Total pension adjustments, net of income tax | 6 | 14
Capital contributions from noncontrolling interests | 31 | 55
Distributions to noncontrolling interests | (24) | (27)
Disposition of businesses | (5) | 0
Issuance and exercise of stock-based compensation benefit plans, net of income tax | 6 | 14
Acquisition of subsidiary shares from noncontrolling interests | 0 | (1)
Ending Balance | 7,641 | 7,741
Unrealized Derivative Losses [Roll Forward] |  |
Unrealized derivative losses, beginning balance | (307) |
Other comprehensive income before reclassifications | (66) |
Amount reclassified from accumulated other comprehensive loss | 19 |
Net current-period other comprehensive income | (47) |
Unrealized Derivative Losses, ending balance | (354) |
Unfunded PensionObligation [Roll Forward] |  |
Unfunded pension obligation, beginning balance | (291) |
Amount reclassified from accumulated other comprehensive loss | 2 |
Net current-period other comprehensive income | 2 |
Unfunded pension obligation, ending balance | (289) |
Foreign Currency Translation Adjustment [Roll Forward] |  |
Foreign currency translation adjustment, beginning balance | (2,284) |
Other comprehensive income before reclassification | (46) |
Amounts reclassified from accumulated other comprehensive income | 6 |
Net current-period other comprehensive income | (40) |
Foreign currency translation adjustment, ending balance | (2,324) |
Accumulated Other Comprehensive Income Loss Net Of Tax [Roll Forward] |  |
Accumulated other comprehensive loss, beginning balance | (2,882) |
Other comprehensive income before reclassifications | (112) |
Amounts reclassified from accumulated other comprehensive loss | 27 |
Net current-period other comprehensive income | (85) |
Accumulated other comprehensive loss, ending balance | (2,967) |
Parent [Member] |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Beginning Balance | 4,330 | 4,569
Net income | (58) | 82
Total foreign currency translation adjustment, net of income tax | (40) | (42)
Total change in derivative fair value, net of income tax | (47) | 7
Total pension adjustments, net of income tax | 2 | 3
Capital contributions from noncontrolling interests | 0 | 0
Distributions to noncontrolling interests | 0 | 0
Disposition of businesses | 0 | 0
Issuance and exercise of stock-based compensation benefit plans, net of income tax | 6 | 14
Acquisition of subsidiary shares from noncontrolling interests | 0 | 0
Ending Balance | 4,193 | 4,633
Noncontrolling Interest [Member] |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Beginning Balance | 3,321 | 2,945
Net income | 124 | 117
Total foreign currency translation adjustment, net of income tax | 51 | 7
Total change in derivative fair value, net of income tax | (54) | 1
Total pension adjustments, net of income tax | 4 | 11
Capital contributions from noncontrolling interests | 31 | 55
Distributions to noncontrolling interests | (24) | (27)
Disposition of businesses | (5) | 0
Issuance and exercise of stock-based compensation benefit plans, net of income tax | 0 | 0
Acquisition of subsidiary shares from noncontrolling interests | 0 | (1)
Ending Balance | $ 3,448 | $ 3,108

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