Goodwill and Other Intangible Assets (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill and Other Intangible Assets [Line Items]
Goodwill impairment	$ 0	$ 0
Aggregate pre-tax amortization expense	323	337	277
Continuing Operations [Member]
Goodwill and Other Intangible Assets [Line Items]
Aggregate pre-tax amortization expense	323	312	253
Pre-tax amortization expense, 2014	371
Pre-tax amortization expense, 2015	377
Pre-tax amortization expense, 2016	339
Pre-tax amortization expense, 2017	212
Pre-tax amortization expense, 2018	$ 209