Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Product Warranties - Summary of Changes in Product Warranty Provision (Detail)

v3.4.0.3
Product Warranties - Summary of Changes in Product Warranty Provision (Detail) - USD ($)
$ in Millions
12 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]    
Balance at beginning of period $ 35.2 $ 31.4
Accruals for product warranties 28.0 16.0
Settlements made in cash or in kind (17.9) (12.2)
Balance at end of period $ 45.3 $ 35.2