Annual report pursuant to Section 13 and 15(d)

INCOME TAXES INCOME TAXES (Significant Components of Deferred Tax Assets and Liabilities) (Details)

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INCOME TAXES INCOME TAXES (Significant Components of Deferred Tax Assets and Liabilities) (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Deferred tax assets:    
Pensions $ 161.2 $ 154.8
MRRT starting base allowance 357.1 0
Postretirement benefits other than pensions 87.7 109.8
Alternative minimum tax credit carryforwards 274.9 228.5
Capital loss carryforwards 0 3.8
Investment in ventures 14.1 0
Asset retirement obligations 48.2 42.9
Operating loss carryforwards 396.4 260.7
Product inventories 45.4 30.1
Properties 49.2 44.8
Lease liabilities 31.0 38.8
Other liabilities 140.9 149.3
Total deferred tax assets before valuation allowance 1,606.1 1,063.5
Deferred tax asset valuation allowance 858.4 223.9
Net deferred tax assets 747.7 839.6
Deferred tax liabilities:    
Properties 1,350.5 1,345.0
Investment in ventures 207.6 155.9
Intangible assets 24.6 13.5
Income tax uncertainties 48.5 56.7
Financial derivatives 1.6 1.3
Product inventories 19.6 0
Other assets 101.9 98.2
Total deferred tax liabilities 1,754.3 1,670.6
Net deferred tax (liabilities) assets $ (1,006.6) $ (831.0)