v3.22.0.1
Income Taxes (Tables)
12 Months Ended
Dec. 31, 2021
Income Tax Disclosure [Abstract]  
Components of Loss From Continuing Operations Before Income Taxes
The components of income before income taxes by U.S. and foreign jurisdictions were as follows (in millions):
 Year Ended December 31,
 202120202019
United States$152 $13 $(49)
Foreign97 137 116 
Total$249 $150 $67 
Components of Provision for Income Taxes
The provision for (benefit from) income taxes consist of the following (in millions):
 Year Ended December 31,
 202120202019
Current provision:
Federal$— $— $— 
State— — 
Foreign52 53 16 
53 53 16 
Deferred provision:
Federal(3)(5)(3)
State(3)(1)(1)
Foreign(28)(16)(572)
(34)(22)(576)
Provision for (benefit from) income taxes$19 $31 $(560)
Reconciliation of Federal Income Tax Rate
The effective income tax rate differs from the federal statutory income tax rate applied to the income before income taxes due to the following (in millions):     
 Year Ended December 31,
 202120202019
Tax computed at U.S. federal statutory rate$53 $31 $14 
Tax rate differential for international subsidiaries(5)
Stock-based compensation(160)(157)(108)
Tax credits(76)(64)(51)
Foreign restructuring and amortization— 
Executive compensation23 25 19 
Valuation allowance169 184 (432)
Other
Provision for (benefit from) income taxes$19 $31 $(560)
Reconciliation of Deferred Tax Assets and Liabilities Significant components of our deferred tax assets are shown below (in millions). A valuation allowance has been recognized to offset our deferred tax assets, as necessary, by the amount of any tax benefits that, based on evidence, are not expected to be realized.
 December 31,
 20212020
Deferred tax assets:
Net operating loss carryforwards$1,061 $882 
Credit carryforwards318 235 
Lease liability152 115 
Depreciation and amortization587 636 
Other126 103 
Total deferred tax assets2,244 1,971 
Less valuation allowance(1,326)(1,129)
918 842 
Deferred tax liabilities:
Right of use asset(141)(106)
Other(94)(70)
Net deferred tax assets$683 $666 
Reconciliation of Beginning and Ending Balance of Total Unrecognized Tax Benefits
A reconciliation of the beginning and ending balance of total unrecognized tax benefits is as follows (in millions):
 Year Ended December 31,
 202120202019
Balance, beginning period$81 $37 $28 
Tax positions taken in prior period:
Gross increases
Gross decreases— (1)— 
Tax positions taken in current period:
Gross increases38 39 
Lapse of statute of limitations— — — 
Settlements— — — 
Balance, end of period$124 $81 $37