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Income Taxes - Components Of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Deferred tax assets:    
Deferred revenue/gains $ 242 $ 220
Employee benefits 106 95
Foreign tax credit 44 90
Other credits 13 15
Net operating loss carryforward 1,082 914
Interest expense limitation carryforward 110 50
Operating lease liabilities 145 161
Rent expense 12 18
Transaction costs 0 25
Capital loss carryforward 125 0
Sec. 174 research activities 34 27
Other 18 16
Total deferred tax assets 1,931 1,631
Valuation allowance (238) (153)
Deferred tax assets, net 1,693 1,478
Deferred tax liabilities:    
Property and equipment (2,168) (2,049)
Operating lease assets (131) (143)
Other (27) (29)
Total deferred tax liabilities (2,326) (2,221)
Net deferred tax liability $ (633) $ (743)