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Note 10. Income Taxes Deferred Income Tax Assets and Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2016
Dec. 31, 2015
Deferred income tax assets:    
Net operating loss carryforwards $ 503 $ 654
Tax credit carryforwards 41 28
Accrued liabilities 131 123
Minimum pension obligation 23 23
Provision for doubtful accounts 16 18
Liability for unrecognized tax benefits 3 6
Deferred Tax Assets, Derivative Instruments 8 11
Other 0 1
Total deferred tax assets 725 864
Less: valuation allowance (10) (11)
Total deferred income tax assets after valuation allowance 715 853
Deferred income tax liabilities:    
Depreciation and amortization 1,099 1,105
Change in tax return accounting methods 0 9
Prepaid expenses 1 2
Undistributed foreign earnings 2 2
Basis difference in investment in joint ventures 2 1
Total deferred tax liabilities 1,104 1,119
Net deferred income tax liabilities (389) (266)
Deferred Tax Assets, Net, Classification [Abstract]    
Deferred Tax Assets, non-current   1
Deferred Tax Liabilities, Net, Noncurrent 389 267
Net deferred income tax liabilities (389) $ (266)
Operating Loss Carryforwards $ 1,253