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

Income Taxes (Details 2)

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Income Taxes (Details 2) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2012
Mar. 31, 2011
Deferred tax assets:    
Asbestos liability $ 444.5 $ 461.9
Other provisions and accruals 49.0 35.7
Net operating loss carryforwards 11.0 32.5
Capital loss carryforwards 34.5 34.3
Total deferred tax assets 539.0 564.4
Valuation allowance (42.1) (43.1)
Total deferred tax assets, net of valuation allowance 496.9 521.3
Deferred tax liabilities:    
Depreciable and amortizable assets (117.3) (114.9)
Unremitted earnings   (32.6)
Other (8.6) (4.2)
Total deferred tax liabilities (125.9) (151.7)
Net deferred tax assets $ 371.0 $ 369.6