Goodwill and Other Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of other intangible assets	$ 159	$ 151	$ 106
Amortization Expense, Fiscal Year Maturity [Abstract]
Expected amortization expense in 2015	153
Expected amortization expense in 2016	95
Expected amortization expense in 2017	76
Expected amortization expense in 2018	70
Expected amortization expense in 2019	65
Expected amortization expense thereafter	$ 152