v3.22.0.1
Income Taxes (Tables)
 12 Months Ended
Dec. 31, 2021
Income Tax Disclosure [Abstract]  
Schedule of Income (loss) before Income Tax Our sources of Income (loss) before income taxes were as follows:
Year Ended December 31,
(in millions)202120202019
U.S. income$3,401 $3,493 $4,557 
Foreign (loss) income(50)37 46 
Income from continuing operations before income taxes$3,351 $3,530 $4,603 
Schedule of Components of Income Tax Expense (Benefit) Income tax expense is summarized as follows:
Year Ended December 31,
(in millions)202120202019
Current tax (expense) benefit
Federal$(22)$17 $24 
State(89)(84)(70)
Foreign(19)(10)2 
Total current tax expense(130)(77)(44)
Deferred tax (expense) benefit
Federal(541)(676)(954)
State327 (34)(125)
Foreign17 1 (12)
Total deferred tax expense(197)(709)(1,091)
Total income tax expense$(327)$(786)$(1,135)
Schedule of Effective Income Tax Rate Reconciliation The reconciliation between the U.S. federal statutory income tax rate and our effective income tax rate is as follows:
Year Ended December 31,
202120202019
Federal statutory income tax rate21.0 %21.0 %21.0 %
State taxes, net of federal benefit4.5 4.8 5.1 
Effect of law and rate changes(1.7)(0.8)0.4 
Change in valuation allowance(10.7)(2.6)(1.8)
Foreign taxes, net of federal benefit0.1 0.3 0.3 
Permanent differences0.3 0.4 0.6 
Federal tax credits, net of reserves(2.5)(0.9)(0.8)
Equity-based compensation(2.6)(2.5)(0.6)
Non-deductible compensation1.5 2.3 0.6 
Other, net(0.1)0.3 (0.1)
Effective income tax rate9.8 %22.3 %24.7 %
Schedule of Deferred Tax Assets and Liabilities Significant components of deferred income tax assets and liabilities, tax effected, are as follows:
(in millions)December 31,
2021		December 31,
2020
Deferred tax assets
Loss carryforwards$4,414 $4,540 
Lease liabilities7,717 8,031 
Property and equipment— 90 
Reserves and accruals1,280 1,348 
Federal and state tax credits404 411 
Other2,888 2,665 
Deferred tax assets, gross16,703 17,085 
Valuation allowance(435)(878)
Deferred tax assets, net16,268 16,207 
Deferred tax liabilities
Spectrum licenses18,060 17,518 
Property and equipment380 — 
Lease right-of-use assets6,761 7,239 
Other intangible assets769 912 
Other514 504 
Total deferred tax liabilities26,484 26,173 
Net deferred tax liabilities$10,216 $9,966 
Classified on the consolidated balance sheets as:
Deferred tax liabilities$10,216 $9,966 
Schedule of Unrecognized Tax Benefits Roll Forward A reconciliation of the beginning and ending amount of unrecognized tax benefits were as follows:
Year Ended December 31,
(in millions)202120202019
Unrecognized tax benefits, beginning of year$1,159 $514 $462 
Gross increases to tax positions in prior periods73 6 — 
Gross decreases to tax positions in prior periods(123)(28)— 
Gross increases to current period tax positions72 45 64 
Gross increases due to current period business acquisitions36 624 — 
Gross decreases due to settlements with taxing authorities— (2)(12)
Unrecognized tax benefits, end of year$1,217 $1,159 $514