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

Asbestos - Numbers of Open Claims, New Claims and Closed Claims and Average Settlement Per Settled Claim and Case Closed (Detail)

v3.4.0.3
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, 2016
USD ($)
Claim
Mar. 31, 2015
USD ($)
Claim
Mar. 31, 2014
USD ($)
Claim
Mar. 31, 2013
USD ($)
Claim
Mar. 31, 2012
USD ($)
Claim
Mar. 31, 2016
AUD
Mar. 31, 2015
AUD
Mar. 31, 2014
AUD
Mar. 31, 2013
AUD
Mar. 31, 2012
AUD
Insurance [Abstract]                    
Number of open claims at beginning of period 494 466 462 592 564          
Number of new claims 577 665 608 542 456          
Number of closed claims 645 637 604 672 428          
Number of open claims at end of period 426 494 466 462 592          
Average settlement amount per settled claim $ 182,763 $ 222,619 $ 236,268 $ 238,615 $ 228,361 AUD 248,138 AUD 254,209 AUD 253,185 AUD 231,313 AUD 218,610
Average settlement amount per case closed $ 161,229 $ 190,468 $ 198,716 $ 206,892 $ 207,019 AUD 218,900 AUD 217,495 AUD 212,944 AUD 200,561 AUD 198,179