Acquisitions (Allocation Of Acquisition Costs) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2012
Business Acquisition [Line Items]
Cash	$ 331
Estimated fair value of deferred/contingent consideration	113	0
Total Consideration	444
Allocation of purchase price:
Goodwill	7,159	6,752	6,893	6,792
Current Fiscal Period Acquisitions [Member]
Business Acquisition [Line Items]
Cash	331
Estimated fair value of deferred/contingent consideration	113
Total Consideration	444
Allocation of purchase price:
Cash and cash equivalents	18
Accounts receivable, net	3
Other current assets	0
Property, plant, and equipment	3
Intangible assets	189
Goodwill	267
Other assets	2
Total assets acquired	482
Current liabilities	33
Other liabilities	5
Total liabilities assumed	38
Net assets acquired	$ 444