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Long term retention program ("LTRP") (Tables)
3 Months Ended
Mar. 31, 2023
Retirement Benefits [Abstract]  
Long Term Retention Program Accrued Compensation Expense
The following table summarizes the long term retention program accrued compensation expense for the three-month periods ended March 31, 2023 and 2022, which are payable in cash according to the decisions made by the Board of Directors (the “Board”):
Three Months Ended March 31,
20232022
(In millions)
LTRP 2017$— $(1)
LTRP 2018— 
LTRP 2019
LTRP 2020
LTRP 2021
LTRP 202213 10 
LTRP 202314 — 
Total LTRP$47 $30