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Employee Retirement Plans (Tables)
 12 Months Ended
Dec. 31, 2022
Retirement Benefits [Abstract]  
Schedule of Changes in Accumulated Postemployment Benefit Obligations
The following table shows the change in the accumulated postretirement benefit obligation ("APBO") for the years ended December 31, 2022 and 2021:
 
(in millions)20222021
APBO at beginning of period$330 $428 
Service cost19 25 
Interest cost9 10 
Benefits paid(11)(24)
Actuarial gain(106)(109)
APBO at end of period$241 $330 
Schedule of Amounts Recognized in Balance Sheet
The following table reconciles the funded status of the plans to the accrued postretirement benefit cost recognized in Other non-current liabilities on the Company’s Consolidated Balance Sheet at December 31, 2022 and 2021.
 
(in millions)20222021
Funded status$(241)$(330)
Unrecognized net actuarial gain(173)(69)
Unrecognized prior service cost3 3 
Accumulated other comprehensive income170 66 
Consolidated Balance Sheet liability$(241)$(330)
Schedule of Net Benefit Costs
The consolidated periodic postretirement benefit cost for the years ended December 31, 2022, 2021, and 2020, included the following:
 
(in millions)202220212020
Service cost$19 $25 $22 
Interest cost9 10 10 
Amortization of prior service cost$— — 1 
Amortization of net gain(2)— — 
Curtailment— — 53 
Special termination benefits— — 2 
Net periodic postretirement benefit cost$26 $35 $88 
Schedule of Assumptions Used The following actuarial assumptions were used to account for the Company’s postretirement benefit plans at December 31, 2022, 2021, and 2020:
 
202220212020
Weighted-average discount rate5.60 %2.90 %2.45 %
Assumed healthcare cost trend rate (a)6.50 %6.25 %6.75 %
 
(a)The assumed healthcare cost trend rate is expected to be 6.50% for 2023, then decline gradually to 4.75% by 2030 and remain level thereafter.