Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income before non-controlling interests	$ 495us-gaap_ProfitLoss	$ 456us-gaap_ProfitLoss
Other comprehensive income (loss), before tax:
Foreign currency translation adjustments	(426)	71
Gain (loss) related to pension/post-retirement plans	236	(199)
Other comprehensive (loss) income, before tax	(190)	(128)
Income tax expense (credit) on other comprehensive income	53us-gaap_OtherComprehensiveIncomeLossTax	(41)us-gaap_OtherComprehensiveIncomeLossTax
Other comprehensive (loss) income, net of tax	(243)	(87)
Comprehensive income	252	369
Less: comprehensive income attributable to non-controlling interest	13	13
Comprehensive income attributable to the Company	$ 239us-gaap_ComprehensiveIncomeNetOfTax	$ 356us-gaap_ComprehensiveIncomeNetOfTax

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount before tax, after reclassification adjustments of other comprehensive income (loss).

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Amount before tax, after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Amount before tax, after reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans.

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Amount of tax expense (benefit) allocated to other comprehensive income (loss).

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