Fair Value Measurements (Assets and Liabilities Measured At Fair Value On A Recurring Basis Using Unobservable Inputs (Level 3)) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Balance at the beginning of the period	$ (103)	$ (114)
Transfers into Level 3
Transfers out of Level 3
Gains or (losses) included in earnings	5	6
Sales		(1)
Settlements	39	39
Other		(33)
Balance at the end of the period	(59)	(103)
Contingent Consideration
Balance at the beginning of the period	(103)	(115)
Transfers into Level 3
Transfers out of Level 3
Gains or (losses) included in earnings	5	6
Sales
Settlements	39	39
Other		(33)
Balance at the end of the period	(59)	(103)
Corporate and Asset-Backed Debt Securities
Balance at the beginning of the period		1
Transfers into Level 3
Transfers out of Level 3
Sales		(1)
Settlements
Balance at the end of the period