Changes in Warranty Liabilities (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Balance, beginning of period	$ 59	$ 59	$ 54	$ 66
Amounts accrued for current period sales	7	3	16	12
Adjustments of prior accrual estimates	3	1	14	5
Settlements of warranty claims	(7)	(7)	(22)	(26)
Currency impact	(2)		(2)	(1)
Balance, end of period	$ 60	$ 56	$ 60	$ 56