Summary of Significant Accounting Policies - Changes in Company's Accrued Product Warranty Costs (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Accrued product warranty costs:
Balance at January 1	$ 93	$ 99
Acquisitions during this period	1
Accruals for product warranties issued during the period	75	71
Changes to accruals for product warranties existing before January 1	2	1
Foreign currency translation adjustments	(2)	(2)
Settlements made during the period	(64)	(67)
Liabilities held for sale		(9)
Balance at December 31	$ 105	$ 93