Acquisitions (Allocation Of Acquisition Costs) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Business Acquisition [Line Items]
Intangible asset useful life	10 years
Cash	$ 139	$ 252
Estimated fair value of deferred/contingent consideration	39	46	33
Total Consideration	178	360
Allocation of purchase price:
Goodwill	6,893	6,792	6,562
Current Fiscal Period Acquisitions [Member]
Business Acquisition [Line Items]
Cash	139
Estimated fair value of deferred/contingent consideration	39
Total Consideration	178
Allocation of purchase price:
Cash and cash equivalents	14
Accounts receivable, net	10
Other current assets	12
Property, plant, and equipment	3
Intangible assets (primarily customer lists amortized over 10 years)	77
Goodwill	113
Other assets	2
Total assets acquired	231
Current liabilities	21
Other liabilities	32
Total liabilities assumed	53
Net assets acquired	$ 178