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Warranty Obligations - Changes in Warranty Liabilities (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]        
Balance, beginning of period $ 48 $ 59 $ 47 $ 54
Amounts accrued for current period sales $ 6 7 20 16
Adjustments of prior estimates 3 4 14
Settlements of warranty claims $ (7) (7) (23) (22)
Currency impact (1) (2) (2) (2)
Balance, end of period $ 46 $ 60 $ 46 $ 60