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Income Tax - Deferred Tax Assets and Liabilities (Detail) - USD ($)
$ in Millions
Dec. 31, 2017
Dec. 31, 2016
Income Tax Disclosure [Abstract]    
Tax loss carryforwards and investment credits $ 740 $ 804
Less unrecognized tax benefit (235) (195)
Tax loss carryforwards net of unrecognized tax benefit 505 609
Inventory valuation 35 29
Impairment and restructuring charges 16 20
Fixed asset depreciation in arrears 32 34
Increased depreciation incentives 118  
Capitalized development costs 101 91
Receivables for government funding 6 7
Tax credits granted on past capital investments 1,160 1,165
Pension service costs 65 68
Stock awards 5  
Commercial accruals 11 19
Other temporary differences 99 92
Total deferred tax assets 2,153 2,134
Valuation allowances (1,502) (1,577)
Deferred tax assets, net 651 557
Accelerated fixed asset depreciation (13) (10)
Acquired intangible assets (10) (8)
Advances of government funding (9) (16)
Other temporary differences (6)  
Deferred tax liabilities (38) (34)
Net deferred income tax asset $ 613 $ 523