Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Consolidated Statements of Comprehensive Income
Net income	$ 5,885us-gaap_NetIncomeLoss	$ 5,359us-gaap_NetIncomeLoss	$ 4,482us-gaap_NetIncomeLoss
Other comprehensive income (loss)
Net unrealized securities (losses) gains, net of tax	33	(252)	27
Net unrealized derivatives gains, net of tax	0	0	1
Foreign currency translation adjustments, net of tax	(409)	(336)	(72)
Net unrealized pension and other postretirement benefit (losses) gains, net of tax	(117)	89	(7)
Other comprehensive loss	(493)	(499)	(51)
Comprehensive income	$ 5,392us-gaap_ComprehensiveIncomeNetOfTax	$ 4,860us-gaap_ComprehensiveIncomeNetOfTax	$ 4,431us-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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