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Income Taxes (Details 3) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Deferred tax assets:      
Net operating loss and capital loss carryforwards, state $ 68 $ 34  
Net operating loss and capital loss carryforwards, foreign 116 114  
Retirement and other employee benefits 14 25  
Foreign tax credits 55 44  
State tax credits 16 7  
Other 38 35  
Operating lease liabilities 63 64  
Gross deferred tax assets 370 323  
Valuation allowance (194) (190)  
Net deferred tax assets 176 133  
Deferred tax liabilities:      
Depreciation and amortization (300) (139)  
Investments in partnerships (780) (858)  
Operating lease right-of-use assets (63) (63)  
Undistributed earnings (9) (12)  
Other (23) (19)  
Deferred tax liabilities (1,175) (1,091)  
Net deferred tax liability (999) (958)  
Unrecognized tax benefits:      
Balance as of January 1 181 27  
Additions for tax positions taken during the current year 5 0  
Additions for tax positions taken during prior years 69 154  
Reductions related to lapsed statutes of limitations 0 0  
Reductions related to settlements with tax jurisdictions (33) 0 $ (59)
Balance as of December 31 $ 222 $ 181 $ 27