Goodwill and Identifiable Intangible Assets - Identifiable Intangible Assets (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)	15 years
Gross Carrying Amount	$ 547	$ 508
Accumulated Amortization	348	313
Net Carrying Amount	$ 199	195
Customer Contractual Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)	16 years
Gross Carrying Amount	$ 370	355
Accumulated Amortization	246	221
Net Carrying Amount	$ 124	134
Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)	11 years
Gross Carrying Amount	$ 156	132
Accumulated Amortization	91	82
Net Carrying Amount	$ 65	50
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)	18 years
Gross Carrying Amount	$ 21	21
Accumulated Amortization	11	10
Net Carrying Amount	$ 10	$ 11