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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2020
Income Tax Disclosure [Abstract]  
Summary of Components of Income Taxes From Continuing Operations
The components of pretax income from continuing operations, generally based on the jurisdiction of the legal entity, were as follows:
 Year Ended December 31,
 202020192018
Components of pre-tax (loss) income:   
Domestic$(1,032,549)$30,960 $190,291 
Foreign(281,696)168,678 208,122 
 $(1,314,245)$199,638 $398,413 
Summary of Provision for Income Tax Relating to Continuing Operations
The provision for income taxes relating to continuing operations consists of the following:
 Year Ended December 31,
 202020192018
Current portion:   
Federal$(5,067)$4,488 $(49,518)
State and Local(435)3,781 4,168 
Non U.S.11,823 49,982 59,743 
Total current6,321 58,251 14,393 
Deferred portion:  
Federal(34,295)(14,215)55,502 
State and Local(4,533)(1,692)(4,812)
Non U.S.(7,406)(7,018)(7,591)
Total deferred(46,234)(22,925)43,099 
Total provision for income taxes$(39,913)$35,326 $57,492 
Schedule of Reconciliation of Statutory Income Taxes and Effective Income Taxes Relating to Continuing Operation
The provision for income taxes relating to continuing operations differs from amounts computed at the statutory federal income tax rate as follows:
 Year Ended December 31,
 202020192018
Income tax provision at statutory federal income tax rate$(275,992)$41,924 $83,667 
State income taxes, net of federal benefit(15,126)2,223 (42)
Impact of non U.S. taxing jurisdictions, net31,207 13,121 1,714 
Impact of U.S. TCJA(1)
— — (26,730)
Employee stock based compensation13,985 8,380 3,884 
Research tax credit(11,328)(28,593)(9,818)
Tax receivable agreement (TRA)(2)
— (536)1,019 
Valuation Allowance201,863 957 3,878 
Other, net15,478 (2,150)(80)
Total provision for income taxes$(39,913)$35,326 $57,492 
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(1)In 2018, amount includes adjustments for deferred taxes and foreign tax effects.
(2)Amount includes adjustments to the TRA, which are not taxable.
Summary of Deferred Tax Assets and Liabilities
The components of our deferred tax assets and liabilities are as follows:
 As of December 31,
 20202019
Deferred tax assets:  
Employee benefits other than pension$21,903 $23,272 
Lease liabilities22,108 9,415 
Deferred revenue33,824 30,715 
Pension obligations27,865 27,407 
Tax loss carryforwards259,035 59,939 
Incentive consideration4,158 6,722 
Tax credit carryforwards47,110 18,496 
Suspended loss14,528 14,635 
Accrued expenses1,797 7,547 
Other— 533 
Total deferred tax assets432,328 198,681 
Deferred tax liabilities: 
Exchangeable notes(19,114)— 
Right of use assets(21,376)(9,261)
Depreciation and amortization(8,284)(7,059)
Software developed for internal use(19,917)(66,918)
Intangible assets(110,625)(120,528)
Unrealized gains and losses(24,109)(18,778)
Non U.S. operations(15,674)(16,149)
Investment in partnership(7,565)(7,306)
Other(2,974)— 
Total deferred tax liabilities(229,638)(245,999)
Valuation allowance(251,253)(38,272)
Net deferred tax (liability)$(48,563)$(85,590)
Summary of Reconciliation of Unrecognized Tax Benefit
A reconciliation of the beginning and ending amount of unrecognized tax benefits, excluding interest and penalties, is as follows:
 Year Ended December 31,
 202020192018
Balance at beginning of year$64,645 $70,327 $74,388 
Additions for tax positions taken in the current year3,090 5,149 4,450 
Additions for tax positions of prior years7,504 12,679 2,612 
Additions for tax positions from acquisitions— 1,294 — 
Reductions for tax positions of prior years— (19,611)(5,831)
Reductions for tax positions of expired statute of limitations(656)(1,192)(3,143)
Settlements(1,529)(4,001)(2,149)
Balance at end of year$73,054 $64,645 $70,327 
Summary of Income Tax Examinations The following table summarizes, by major tax jurisdiction, our tax years that remain subject to examination by taxing authorities:
Tax JurisdictionYears Subject to Examination
United Kingdom2016 - forward
Singapore2016 - forward
India1996 - 2015
Uruguay2015 - forward
U.S. Federal2014, 2015, 2017 - forward
Texas2016 - forward