Goodwill and Intangible Assets (Acquired Intangible Assets) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Acquired intangible assets disclosures
Total gross carrying amount	$ 3,038	$ 3,047
Total accumulated amortization	(1,536)	(1,488)
Total finite-lived intangible assets - net	1,502	1,559
Non-amortizable intangible assets (primarily tradenames)	129	129
Total intangible assets - net	1,631	1,688
Patents
Acquired intangible assets disclosures
Total gross carrying amount	602	602
Total accumulated amortization	(466)	(458)
Other amortizable intangible assets (primarily tradenames and customer related intangibles)
Acquired intangible assets disclosures
Total gross carrying amount	2,436	2,445
Total accumulated amortization	$ (1,070)	$ (1,030)