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Employee Benefit Plans Estimated Future Funding (Details) - Defined Benefit Pension Plan
$ in Millions
Dec. 31, 2021
USD ($)
Expected Future Benefit Payments, Fiscal Year Maturity  
2022 $ 9
2023 9
2024 9
2025 9
2026 9
2027 through 2031 43
Estimated minimum funding required during next fiscal year $ 2