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Pension and Other Postretirement Benefits (Details 2) - USD ($)
 3 Months Ended 12 Months Ended
Dec. 31, 2022
Sep. 30, 2022
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Net periodic benefit cost and other amounts recognized in accumulated other comprehensive loss:          
Settlement loss $ 4,000,000 $ 24,000,000   $ 21,000,000  
Curtailment gains       4,000,000  
North America | Pension Plans          
Pre-tax amounts recognized in accumulated other comprehensive loss          
Prior service cost 0   $ 0 0  
Net actuarial loss (gain) 6,000,000   1,000,000 6,000,000  
Pre-tax amounts recognized in accumulated other comprehensive loss, total 6,000,000   1,000,000 6,000,000  
Net periodic benefit cost and other amounts recognized in accumulated other comprehensive loss:          
Service cost     5,000,000 16,000,000 $ 20,000,000
Interest cost     13,000,000 19,000,000 21,000,000
Expected return on plan assets     (15,000,000) (22,000,000) (24,000,000)
Settlement loss     0 21,000,000 0
Curtailment gains     0 (4,000,000) 0
Amortization of prior service cost     0 1,000,000 1,000,000
Amortization of actuarial loss (gain)     0 0 5,000,000
Net periodic benefit cost (income)     3,000,000 31,000,000 23,000,000
Net actuarial (gain) loss     (6,000,000) (2,000,000) (31,000,000)
Settlement loss     0 (21,000,000) 0
Curtailment effects     0 (20,000,000) 0
Curtailment gains     0 4,000,000 0
Amortization of prior service (cost) benefit     0 (1,000,000) (1,000,000)
Amortization of actuarial (loss) gain     0 0 (5,000,000)
Total recognized in other comprehensive (income) loss     (6,000,000) (40,000,000) (37,000,000)
Total recognized in net periodic benefit cost (income) and other comprehensive (income) loss     (3,000,000) (9,000,000) (14,000,000)
Benefit obligation and fair value of plan assets by pension plans          
Accumulated benefit obligation 269,000,000   290,000,000 269,000,000  
Accumulated benefit obligation 163,000,000   0 163,000,000  
Fair value of plan assets 143,000,000   0 143,000,000  
Projected benefit obligation (167,000,000)   (176,000,000) (167,000,000)  
Fair value of plan assets 143,000,000   174,000,000 143,000,000  
North America | Retiree Medical          
Pre-tax amounts recognized in accumulated other comprehensive loss          
Prior service cost 0   0 0  
Net actuarial loss (gain) (4,000,000)   (6,000,000) (4,000,000)  
Pre-tax amounts recognized in accumulated other comprehensive loss, total (4,000,000)   (6,000,000) (4,000,000)  
Net periodic benefit cost and other amounts recognized in accumulated other comprehensive loss:          
Service cost     0 0 0
Interest cost     1,000,000 1,000,000 1,000,000
Expected return on plan assets     0 0 0
Settlement loss     0 0 0
Curtailment gains     0 0 0
Amortization of prior service cost     0 0 0
Amortization of actuarial loss (gain)     (1,000,000) 0 0
Net periodic benefit cost (income)     0 1,000,000 1,000,000
Net actuarial (gain) loss     (2,000,000) (8,000,000) 0
Settlement loss     0 0 0
Curtailment effects     0 0 0
Curtailment gains     0 0 0
Amortization of prior service (cost) benefit     0 0 0
Amortization of actuarial (loss) gain     1,000,000 0 0
Total recognized in other comprehensive (income) loss     (1,000,000) (8,000,000) 0
Total recognized in net periodic benefit cost (income) and other comprehensive (income) loss     (1,000,000) (7,000,000) 1,000,000
UNITED KINGDOM          
Pre-tax amounts recognized in accumulated other comprehensive loss          
Prior service cost 1,000,000   1,000,000 1,000,000  
Net actuarial loss (gain) 56,000,000   73,000,000 56,000,000  
Pre-tax amounts recognized in accumulated other comprehensive loss, total 57,000,000   74,000,000 57,000,000  
UNITED KINGDOM | Pension Plans          
Net periodic benefit cost and other amounts recognized in accumulated other comprehensive loss:          
Service cost     0 0 0
Interest cost     16,000,000 10,000,000 9,000,000
Expected return on plan assets     (25,000,000) (14,000,000) (14,000,000)
Settlement loss     0 0 0
Curtailment gains     0 0 0
Amortization of prior service cost     0 0 0
Amortization of actuarial loss (gain)     0 2,000,000 4,000,000
Net periodic benefit cost (income)     (9,000,000) (2,000,000) (1,000,000)
Net actuarial (gain) loss     14,000,000 (22,000,000) (36,000,000)
Settlement loss     0 0 0
Curtailment effects     0 0 0
Curtailment gains     0 0 0
Amortization of prior service (cost) benefit     0 0 0
Amortization of actuarial (loss) gain     0 (2,000,000) (4,000,000)
Total recognized in other comprehensive (income) loss     14,000,000 (24,000,000) (40,000,000)
Total recognized in net periodic benefit cost (income) and other comprehensive (income) loss     5,000,000 (26,000,000) $ (41,000,000)
Benefit obligation and fair value of plan assets by pension plans          
Accumulated benefit obligation 347,000,000   367,000,000 347,000,000  
Fair value of plan assets 320,000,000   360,000,000 320,000,000  
Projected benefit obligation (347,000,000)   (367,000,000) (347,000,000)  
Fair value of plan assets $ 320,000,000   360,000,000 $ 320,000,000  
Consolidated pension funding contributions for 2024     $ 27,000,000