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Contingencies and Significant Estimates - Summary of Warranty Activity (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Warranty activity    
Balance at beginning of period $ 28.6 $ 32.4
Accruals for warranties issued during the period 6.5 20.4
Settlements made (in cash or in kind) during the period (8.7) (23.7)
Currency translation 0.2 (0.5)
Balance at end of period $ 26.6 $ 28.6