Description of Business and Summary of Significant Accounting Policies - Accrued Warranties (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Changes in Accrued Product Warranties
Beginning balance	$ 46	$ 49	$ 50
Charges	(41)	(37)	(41)
Provision charged to expense	42	36	43
Acquisitions and divestitures	1	0	0
Foreign currency translation	(3)	(2)	(3)
Ending balance	$ 45	$ 46	$ 49