Goodwill and Other Intangible Assets - Other Intangible Assets (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Total other intangible assets, Gross carrying amount	$ 1,187	$ 1,182
Total other intangible assets, Accumulated amortization	(780)	(701)
Indefinite-lived trade names and trademarks	46	46
Total amortizable intangible assets, Gross carrying amount	1,141	1,136
Total amortizable intangible assets, Accumulated amortization	(780)	(701)
Computer Software [Member]
Finite-Lived Intangible Assets [Line Items]
Total amortizable intangible assets, Gross carrying amount	907	902
Total amortizable intangible assets, Accumulated amortization	(664)	(595)
Patent and Licenses [Member]
Finite-Lived Intangible Assets [Line Items]
Total amortizable intangible assets, Gross carrying amount	133	133
Total amortizable intangible assets, Accumulated amortization	(88)	(83)
Other Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Total amortizable intangible assets, Gross carrying amount	101	101
Total amortizable intangible assets, Accumulated amortization	$ (28)	$ (23)