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Employee Benefit Plans - Schedule of Expected Benefit Payments for OPEB (Details) - Other Postretirement Benefit Plans, Defined Benefit [Member]
$ in Millions
Nov. 30, 2019
USD ($)
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]  
2020 $ 0.6
2021 0.6
2022 0.5
2023 0.5
2024 0.5
2025 - 2029 $ 2.0