Acquisitions (Allocation Of Acquisition Costs) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Deferred/Contingent consideration	$ 33	$ 81	$ 100
Total Consideration	197
Cash and cash equivalents	4
Accounts receivable, net	8
Other current assets	0
Property, plant, and equipment	3
Other assets	1
Intangible assets	80
Goodwill	122
Total assets acquired	218
Current liabilities	14
Other liabilities	7
Total liabilities assumed	21	176	24
Net assets acquired	197
Current Year Acquisitions [Member]
Cash	164
Deferred/Contingent consideration	33
Total Consideration	$ 197