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Income Taxes (Details 3) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Deferred tax assets:    
Net operating loss and capital loss carryforwards, state $ 34 $ 38
Net operating loss and capital loss carryforwards, foreign 114 122
Retirement and other employee benefits 25 51
Foreign tax credits 44 18
State tax credits 7 29
Other 35 25
Operating lease liabilities 64 62
Gross deferred tax assets 323 345
Valuation allowance (190) (150)
Net deferred tax assets 133 195
Deferred tax liabilities:    
Depreciation and amortization (139) (157)
Investments in partnerships (858) (998)
Operating lease right-of-use assets (63) (60)
Undistributed earnings (12) 0
Other (19) (9)
Deferred tax liabilities (1,091) (1,224)
Net deferred tax liability (958) (1,029)
Unrecognized tax benefits:    
Balance as of January 1 27 81
Additions for tax positions taken during the current year 0 0
Additions for tax positions taken during prior years 154 5
Reductions related to lapsed statutes of limitations 0 0
Reductions related to settlements with tax jurisdictions 0 (59)
Balance as of December 31 $ 181 $ 27