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(Income) or Expense Recognized in Earnings Related to Fair Value Hedges (Detail) - Financial Services - Interest and other borrowing expenses - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Derivative [Line Items]      
Interest-rate swaps $ 5.5 $ (0.9) $ 0.1
Term notes $ (6.4) $ 0.2 $ (2.6)