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INCOME TAXES (Tables)
12 Months Ended
Dec. 31, 2020
Income Tax Disclosure [Abstract]  
Income Tax Expense Benefit
The income tax expense (benefit) for the years ended December 31, 2020, 2019 and 2018 consists of the following (in millions):
202020192018
Current:
U.S. Federal$839 $570 $89 
U.S. State and Local100 183 
Non-U.S.420 359 374 
Total Current1,359 1,112 470 
Deferred:
U.S. Federal(725)255 668 
U.S. State and Local(159)(93)75 
Non-U.S.26 (62)15 
Total Deferred(858)100 758 
Total Income Tax Expense$501 $1,212 $1,228 
Income Before Income Taxes
Income before income taxes includes the following components (in millions):
202020192018
United States$(39)$3,972 $4,307 
Non-U.S.1,883 1,680 1,712 
Total Income Before Income Taxes:$1,844 $5,652 $6,019 
Reconciliation of Statutory Federal Income Tax Rate to Effective Income Tax Rate
A reconciliation of the statutory federal income tax rate to the effective income tax rate for the years ended December 31, 2020, 2019 and 2018 consists of the following:
202020192018
Statutory U.S. federal income tax rate21.0 %21.0 %21.0 %
U.S. state and local income taxes (net of federal benefit) (1)
(2.6)1.4 1.4 
Non-U.S. tax rate differential1.6 0.3 0.2 
U.S. federal tax credits(3.6)(1.4)(1.1)
Goodwill and other asset impairments5.1 — — 
Net uncertain tax positions3.6 0.1 (0.6)
Non-U.S. valuation allowance release— (1.2)— 
Other2.1 1.2 (0.5)
Effective income tax rate27.2 %21.4 %20.4 %
Deferred Tax Liabilities and Assets
Deferred income tax assets and liabilities are comprised of the following as of December 31, 2020 and 2019 (in millions):
20202019
Fixed assets and capitalized software$(5,355)$(4,720)
Operating lease right-of-use assets(730)(685)
Other(501)(538)
Deferred tax liabilities(6,586)(5,943)
Pension and postretirement benefits3,994 2,522 
Loss and credit carryforwards325 328 
Insurance reserves535 413 
Stock compensation183 249 
Accrued employee compensation583 287 
Operating lease liabilities736 691 
Other357 205 
Deferred tax assets6,713 4,695 
Deferred tax assets valuation allowance(88)(54)
Deferred tax asset (net of valuation allowance)6,625 4,641 
Net deferred tax asset (liability)$39 $(1,302)
Amounts recognized in the consolidated balance sheets:
Deferred tax assets$527 $330 
Deferred tax liabilities(488)(1,632)
Net deferred tax asset (liability)$39 $(1,302)
U.S. State and Local Operating Loss and Credit Carryforwards
Further, we have U.S. state and local operating loss and credit carryforwards as follows (in millions):
20202019
U.S. state and local operating loss carryforwards$1,253 $1,374 
U.S. state and local credit carryforwards$108 $110 
Summarized Activity Related to Unrecognized Tax Benefits
The following table summarizes the activity related to our uncertain tax positions (in millions):
TaxInterestPenalties
Balance at January 1, 2018$160 $43 $
Additions for tax positions of the current year47 — 
Additions for tax positions of prior years10 — 
Reductions for tax positions of prior years for:
Changes based on facts and circumstances(43)(8)(5)
Settlements during the period(1)(1)— 
Lapses of applicable statute of limitations(3)— — 
Balance as of December 31, 2018167 44 
Additions for tax positions of the current year— — 
Additions for tax positions of prior years51 13 — 
Reductions for tax positions of prior years for:
Changes based on facts and circumstances(45)(4)(1)
Settlements during the period(3)(1)— 
Lapses of applicable statute of limitations(4)— — 
Balance as of December 31, 2019172 52 
Additions for tax positions of the current year61 — — 
Additions for tax positions of prior years154 34 
Reductions for tax positions of prior years for:
Changes based on facts and circumstances(54)(24)(2)
Settlements during the period— (1)— 
Lapses of applicable statute of limitations— — — 
Balance as of December 31, 2020$333 $61 $