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

Accumulated Other Comprehensive Income (Loss) - Accumulated Other Comprehensive Income (Loss) (Detail)

v3.7.0.1
Accumulated Other Comprehensive Income (Loss) - Accumulated Other Comprehensive Income (Loss) (Detail)
$ in Millions
 12 Months Ended
Mar. 31, 2017
USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Beginning balance $ 0.8
Other comprehensive loss (3.0)
Ending balance (2.2)
Cash Flow Hedges [Member]  
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Beginning balance 0.3
Ending balance 0.3
Foreign Currency Translation Adjustments [Member]  
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Beginning balance 0.5
Other comprehensive loss (3.0)
Ending balance $ (2.5)