v3.26.3
Accumulated Other Comprehensive Loss - Schedule of Changes in Accumulated Other Comprehensive Loss by Component, After Tax and Minority Interest (Details) - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Beginning balance $ 3,403 $ 4,823
Ending balance 2,794 3,178
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 17 (13)
Amounts reclassified from accumulated other comprehensive income (loss) 69 151
Ending balance (3,502) (3,706)
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 15 (10)
Amounts reclassified from accumulated other comprehensive income (loss) 0 8
Ending balance (1,647) (1,707)
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 (3)
Amounts reclassified from accumulated other comprehensive income (loss) 69 143
Ending balance $ (1,856) $ (2,000)