v3.26.1
Accumulated Other Comprehensive Loss - Schedule of Changes in Accumulated Other Comprehensive Loss by Component, After Tax and Minority Interest (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Beginning balance $ 3,403 $ 4,823
Ending balance 3,001 5,294
Total    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Beginning balance (3,588) (3,844)
Other comprehensive income (loss) before reclassifications 8 12
Amounts reclassified from accumulated other comprehensive income (loss) 46 48
Ending balance (3,534) (3,784)
Foreign Currency Translation Adjustment    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Beginning balance (1,662) (1,705)
Other comprehensive income (loss) before reclassifications 6 4
Amounts reclassified from accumulated other comprehensive income (loss) 0 8
Ending balance (1,656) (1,693)
Unrealized Gains (Losses) from Securities    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Beginning balance 1 1
Other comprehensive income (loss) before reclassifications 0 0
Amounts reclassified from accumulated other comprehensive income (loss) 0 0
Ending balance 1 1
Unrecognized Net Actuarial Losses and Prior Service Costs    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Beginning balance (1,927) (2,140)
Other comprehensive income (loss) before reclassifications 2 8
Amounts reclassified from accumulated other comprehensive income (loss) 46 40
Ending balance $ (1,879) $ (2,092)