Asbestos - Numbers of Open Claims, New Claims and Closed Claims and Average Settlement Per Settled Claim and Case Closed (Detail) |
12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
Mar. 31, 2020
USD ($)
claim
|
Mar. 31, 2019
USD ($)
claim
|
Mar. 31, 2018
USD ($)
claim
|
Mar. 31, 2017
USD ($)
claim
|
Mar. 31, 2016
USD ($)
claim
|
Mar. 31, 2020
AUD ($)
|
Mar. 31, 2019
AUD ($)
|
Mar. 31, 2018
AUD ($)
|
Mar. 31, 2017
AUD ($)
|
Mar. 31, 2016
AUD ($)
|
|
| Loss Contingency, Pending Claims, Number [Roll Forward] | ||||||||||
| Number of open claims at beginning of period | 332 | 336 | 352 | 426 | 494 | |||||
| Number of new claims | 657 | 568 | 562 | 557 | 577 | |||||
| Number of closed claims | 596 | 572 | 578 | 631 | 645 | |||||
| Number of open claims at end of period | 393 | 332 | 336 | 352 | 426 | |||||
| Average settlement amount per settled claim | $ 189,000 | $ 191,000 | $ 196,000 | $ 168,000 | $ 183,000 | $ 277,000 | $ 262,000 | $ 253,000 | $ 224,000 | $ 248,000 |
| Average settlement amount per case closed | $ 167,000 | $ 171,000 | $ 168,000 | $ 126,000 | $ 161,000 | $ 245,000 | $ 234,000 | $ 217,000 | $ 168,000 | $ 219,000 |
| X | ||||||||||
- Definition Average settlement amount per case closed. No definition available.
|
| X | ||||||||||
- Definition Average settlement amount per settled claim. No definition available.
|
| X | ||||||||||
- Definition Loss Contingency, Pending Claims, Number [Roll Forward] No definition available.
|
| X | ||||||||||
- Definition The number of claims settled and dismissed during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The total number of new claims filed pertaining to a loss contingency during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Number of pending claims pertaining to a loss contingency. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|