Product Warranties - Summary of Changes in Product Warranty Provision (Detail) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2020 |
Mar. 31, 2019 |
Mar. 31, 2018 |
|
| Movement in Standard and Extended Product Warranty Accrual, Increase (Decrease) [Roll Forward] | |||
| Balance at beginning of period | $ 46.6 | $ 52.8 | $ 46.6 |
| Increase (Decrease) in product warranties accrual | 0.8 | (0.8) | 13.1 |
| Acquired during the period | 0.0 | 0.5 | 0.0 |
| Settlements made in cash or in kind | (5.0) | (5.9) | (6.9) |
| Balance at end of period | $ 42.4 | $ 46.6 | $ 52.8 |
| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
|
| X | ||||||||||
- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of increase in the standard and extended product warranty accrual from a business acquisition. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of decrease in the standard and extended product warranty accrual from payments made in cash or in kind to satisfy claims under the terms of the standard and extended product warranty. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of increase (decrease) in the standard and extended product warranty accrual from changes in estimates attributable to preexisting product warranties. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|