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Retirement Plans and Profit Sharing Arrangements (Expected Benefit Payments) (Details 7)
$ in Millions
Dec. 31, 2019
USD ($)
Pension Plans [Member]  
Expected benefit payments to retirees  
2017 $ 86
2018 62
2019 67
2020 83
2021 72
2022-2026 381
Estimated future employer contributions in next fiscal year 16
Other Postretirement Benefits Plan [Member]  
Expected benefit payments to retirees  
2017 1
2018 1
2019 1
2020 1
2021 1
2022-2026 5
Estimated future employer contributions in next fiscal year $ 1