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Pension Benefits (Details) - UNITED STATES - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Defined Benefit Plan Disclosure [Line Items]        
Net periodic benefit cost $ 2 $ 5 $ 4 $ 11
General and Administrative Expense [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 1 2 3 4
Other pension (income) expense [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Interest cost 8 8 16 16
Expected return on plan assets (11) (10) (23) (21)
Amortization of net loss 2 3 5 9
Amortization of prior service cost $ 2 $ 2 $ 3 $ 3