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Changes in Product Support Liabilities, Deferred Revenues on Extended Warranties and R&M Contracts (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Deferred Revenues on Extended Warranties and R&M Contracts      
Beginning balance $ 524.8 $ 462.0 $ 411.8
Deferred revenues 347.6 333.0 323.7
Revenues recognized (274.3) (248.4) (246.1)
Currency translation (24.6) (21.8) (27.4)
Ending balance $ 573.5 $ 524.8 $ 462.0