Income Taxes (Taxes on Income) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
U.S., income before income taxes	$ 313	$ 407	$ 398
Other, income before income taxes	1,744	1,566	1,298
Total income before income taxes	2,057	1,973	1,696
U.S. Federal, current	80	102	42
Other national governments, current	369	264	336
U.S. state and local, current	26	45	24
Total current income taxes	475	411	402
U.S. Federal, deferred	27	12	(18)
Other national governments, deferred	62	149	89
U.S. state and local, deferred	22	22	19
Total deferred income taxes	111	183	90
Total income taxes	$ 586	$ 594	$ 492