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Income Tax - Deferred Tax Assets and Liabilities (Detail) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Income Tax Disclosure [Abstract]    
Tax loss carryforwards and investment credits $ 702 $ 612
Less unrecognized tax benefit (19) (21)
Tax loss carryforwards net of unrecognized tax benefit 683 591
Inventory valuation 34 28
Impairment and restructuring charges 3 6
Fixed asset depreciation in arrears 82 39
Increased depreciation incentives 182 213
Capitalized development costs 107 118
Receivables for government funding 40 14
Tax credits granted on past capital investments 215 1,151
Pension service costs 104 81
Stock awards 11 6
Operating lease liabilities 36 40
Commercial accruals 13 15
Other temporary differences 26 22
Total deferred tax assets 1,536 2,324
Valuation allowances (638) (1,534)
Deferred tax assets, net 898 790
Accelerated fixed asset depreciation (21) (20)
Acquired intangible assets (40) (16)
Advances of government funding (94) (31)
Operating lease right-of-use assets (36) (40)
Other temporary differences (43) (7)
Deferred tax liabilities (234) (114)
Net deferred income tax asset $ 664 $ 676