v3.26.1
Employee Benefits - Schedule of Components of Net Periodic (Benefit) Cost (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
U.K.        
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 0 $ 0 $ 0 $ 0
Interest cost 36 39 73 76
Expected return on plan assets, net of administration expenses (48) (45) (96) (88)
Amortization of prior-service cost 2 0 2 1
Amortization of net actuarial loss 20 22 40 44
Net periodic cost 10 16 19 33
Other        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 0 0 0 0
Interest cost 12 10 23 19
Expected return on plan assets, net of administration expenses (15) (14) (30) (26)
Amortization of prior-service cost 0 0 0 0
Amortization of net actuarial loss 3 4 7 7
Net periodic cost 0 0 0 0
U.S.        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 0 0 0 0
Interest cost 23 25 47 51
Expected return on plan assets, net of administration expenses (29) (30) (59) (60)
Amortization of prior-service cost 0 0 0 0
Amortization of net actuarial loss 11 9 22 18
Net periodic cost $ 5 $ 4 $ 10 $ 9