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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2023
Income Tax Disclosure [Abstract]  
Schedule of components of earnings before income taxes and equity in earnings of non-operating affiliates
The components of earnings before income taxes and the components of our income tax provision are as follows:
 Year ended December 31,
 202320222021
 (in millions)
Domestic$2,248 $4,699 $1,979 
Non-U.S. — 396 (436)
Earnings before income taxes$2,248 $5,095 $1,543 
Schedule of components of Income tax provision
Current   
Federal$271 $702 $394 
Foreign(26)395 30 
State84 168 55 
329 1,265 479 
Deferred   
Federal108 (102)(137)
Foreign(5)(18)(50)
State(22)13 (9)
81 (107)(196)
Income tax provision$410 $1,158 $283 
Summary of differences in expected income tax provision based on statutory rates applied to earnings before income taxes and income tax provision reflected in the consolidated statements of operations
Differences in the expected income tax provision based on statutory rates applied to earnings before income taxes and the income tax provision reflected in the consolidated statements of operations are summarized below.
 Year ended December 31,
 202320222021
 (in millions, except percentages)
Earnings before income taxes$2,248 $5,095 $1,543 
Expected tax provision at U.S. statutory rate of 21%$472 $1,070 $324 
State income taxes, net of federal44 143 34 
Net earnings attributable to noncontrolling interest(66)(124)(72)
Foreign tax rate differential(1)(9)(1)
U.S. tax on foreign earnings— 
Non-deductible goodwill impairment— — 60 
Transfer pricing arbitration — 69 — 
Federal income tax return audits— — (38)
Other(43)(24)
Income tax provision$410 $1,158 $283 
Effective tax rate18.3 %22.7 %18.3 %
Schedule of deferred tax assets and deferred tax liabilities
Deferred tax assets and deferred tax liabilities are as follows:
 December 31,
 20232022
 (in millions)
Deferred tax assets:  
Net operating loss and capital loss carryforwards, state$68 $34 
Net operating loss and capital loss carryforwards, foreign116 114 
Retirement and other employee benefits14 25 
Foreign tax credits55 44 
State tax credits16 
Operating lease liabilities63 64 
Other38 35 
370 323 
Valuation allowance(194)(190)
176 133 
Deferred tax liabilities:
Depreciation and amortization(300)(139)
Investments in partnerships(780)(858)
Operating lease right-of-use assets(63)(63)
Foreign earnings(9)(12)
Other(23)(19)
(1,175)(1,091)
Net deferred tax liability$(999)$(958)
Schedule of reconciliation of the beginning and ending amount of unrecognized tax benefits
A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:
 December 31,
 20232022
 (in millions)
Unrecognized tax benefits:
Balance as of January 1$181 $27 
Additions for tax positions taken during the current year— 
Additions for tax positions taken during prior years69 154 
Reductions related to lapsed statutes of limitations— — 
Reductions related to settlements with tax jurisdictions(33)— 
Balance as of December 31$222 $181