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Significant Portions Of Deferred Tax Assets and Liabilities (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Deferred tax assets    
Tax loss carryforwards $ 888.8 $ 914.9
Postretirement benefits 566.3 905.4
Foreign tax credit carryforwards 252.4 564.3
Capitalized research and development 89.7 149.6
Other tax credit carryforwards 88.9 116.8
Deferred revenue 86.4 76.1
Employee benefits and compensation 42.4 55.9
Purchased capitalized software 41.3 43.7
Depreciation 31.6 34.8
Capitalized costs 16.5 16.5
Warranty, bad debts and other reserves 14.6 15.1
Other 26.8 30.0
Deferred Tax Assets, Gross, Total 2,145.7 2,923.1
Valuation allowance (1,998.8) (2,731.8)
Total deferred tax assets 146.9 191.3
Other 33.0 25.6
Total deferred tax liabilities 33.0 25.6
Net deferred tax assets $ 113.9 $ 165.7