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Retirement Plans Estimated Future Benefit Payments (Details)
$ in Millions
Jan. 01, 2022
USD ($)
Pension Benefits  
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]  
2022 $ 52
2023 53
2024 53
2025 53
2026 54
Subsequent five years 245
Other Postretirement Plans  
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]  
2022 0
2023 1
2024 1
2025 1
2026 0
Subsequent five years $ 2