Future Minimum Lease Payments (Details) - Successor $ in Millions	Dec. 31, 2018 USD ($)
Capital Leases
2019	$ 28.2
2020	8.0
2021	0.4
2022	0.4
2023	0.5
2024 and thereafter	8.8
Total minimum lease payments	46.3
Less interest	6.3
Present value of minimum capital lease payments	40.0
Operating Leases
2019	47.6
2020	27.6
2021	15.9
2022	11.8
2023	12.1
2024 and thereafter	12.1
Total minimum lease payments	127.1
Coal Lease and Royalty Obligations
2019	5.4
2020	5.5
2021	5.6
2022	5.4
2023	5.5
2024 and thereafter	36.2
Total minimum lease payments	$ 63.6

Coal Lease And Royalty Obligation Capital Leases Future Minimum Payments Due.

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Coal Lease And Royalty Obligation Capital Leases Future Minimum Payments Due In Five Years

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Coal Lease And Royalty Obligation Capital Leases Future Minimum Payments Due In Four Years.

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Coal Lease And Royalty Obligation Capital Leases Future Minimum Payments Due In Two Years

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Coal Lease And Royalty Obligation Capital Leases Future Minimum Payments Due Thereafter.

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Amount of minimum lease payments for capital leases.

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Present value of minimum lease payments for capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and taxes.

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