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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2020
Income Tax Disclosure [Abstract]  
Schedule of Components of Income Tax Expense
We file a consolidated federal income tax return for all of our wholly owned subsidiaries, including Sirius XM and Pandora. Income tax expense consisted of the following:
 For the Years Ended December 31,
 202020192018
Current taxes:   
Federal$— $— $— 
State(61)(24)12 
Total current taxes(61)(24)12 
Deferred taxes:   
Federal(219)(229)(259)
State(19)(30)
Total deferred taxes(238)(259)(257)
Total income tax expense$(299)$(283)$(245)
Schedule of Effective Income Tax Rate Reconciliation
The following table presents a reconciliation of the U.S. federal statutory tax rate and our effective tax rate:
 For the Years Ended December 31,
 202020192018
Federal tax expense, at statutory rate21.0 %21.0 %21.0 %
State income tax expense, net of federal benefit4.2 %3.9 %3.6 %
Change in valuation allowance0.7 %0.3 %1.0 %
Tax credits(10.2)%(2.7)%(6.8)%
Share-based compensation(3.5)%(2.4)%(3.1)%
Impact of nondeductible compensation2.6 %1.6 %0.7 %
Automatic worthless stock deduction(3.5)%— %— %
Goodwill impairment53.7 %— %— %
Uncertain tax positions4.4 %— %— %
Other, net0.1 %1.9 %0.8 %
Effective tax rate69.5 %23.6 %17.2 %
Schedule of Deferred Tax Assets and Liabilities
The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities, shown before jurisdictional netting, are presented below:
 For the Years Ended December 31,
 20202019
Deferred tax assets:  
Net operating loss carryforwards and tax credits$745 $1,010 
Deferred revenue62 81 
Accrued bonus29 34 
Expensed costs capitalized for tax11 14 
Investments21 22 
Stock based compensation74 72 
Operating lease liability118 126 
Total deferred tax assets1,060 1,359 
Deferred tax liabilities:  
Depreciation of property and equipment(237)(228)
FCC license(521)(519)
Other intangible assets(292)(340)
Right of use asset(106)(116)
Other(5)(3)
Total deferred tax liabilities(1,161)(1,206)
Net deferred tax assets before valuation allowance(101)153 
Valuation allowance(54)(70)
Total net deferred tax (liability) asset$(155)$83 
Schedule of Uncertain Income Tax Positions
Changes in our unrecognized tax benefits and uncertain tax positions from January 1 through December 31 are set forth below:
 20202019
Balance, beginning of year$406 $387 
Increases in tax positions for prior years14 — 
Increases in tax positions for current year20 31 
Decreases in tax positions for prior years(7)(12)
Balance, end of year$433 $406