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Deferred Income Tax Assets and Liabilities (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2013
Jun. 30, 2013
Dec. 31, 2012
Deferred tax assets:      
Depreciation and amortization $ 10.8   $ 12.5
Accrued expenses 28.8   27.9
Net operating loss, capital loss, alternative minimum tax, research and development, and foreign tax credit carryforwards 62.8   75.0
Definite lived intangibles 1.7   1.8
Pension benefits 23.3   31.1
Other 1.1   0.3
Deferred revenue 0.1   0.1
Gross deferred tax assets 128.6   148.7
Valuation allowance (9.8) (10.4) (131.8)
Total deferred tax assets 118.8   16.9
Deferred tax liabilities:      
Depreciation and amortization (3.7)   (5.0)
Expenses capitalized for book (1.0)   (2.1)
Pension benefits (11.5)   0
Intangibles liabilities (56.8)   (56.2)
Deferred Tax Liabilities, Other (0.3)   0
Gross deferred tax liabilities (73.3)   (63.3)
Net deferred tax assets (liabilities) $ 45.5   $ (46.4)