v3.25.1
Employee Benefits - Schedule of Components of Net Periodic (Benefit) Cost (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
U.K.    
Defined Benefit Plan Disclosure [Line Items]    
Service cost $ 0 $ 0
Interest cost 37 35
Expected return on plan assets, net of administration expenses (43) (47)
Amortization of prior-service cost 1 1
Amortization of net actuarial loss 22 20
Net periodic cost (benefit) 17 9
Other    
Defined Benefit Plan Disclosure [Line Items]    
Service cost 0 0
Interest cost 9 9
Expected return on plan assets, net of administration expenses (12) (13)
Amortization of prior-service cost 0 0
Amortization of net actuarial loss 3 3
Net periodic cost (benefit) 0 (1)
U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Service cost 0 0
Interest cost 26 23
Expected return on plan assets, net of administration expenses (30) (33)
Amortization of prior-service cost 0 0
Amortization of net actuarial loss 9 7
Net periodic cost (benefit) $ 5 $ (3)