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Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Accounts payable and accrued expenses [Line Items] |  |
Trade accounts payable | $ 254.8 | $ 281.7
Accrued payroll and related benefits | 186.2 | 209.3
Other accrued expenses | 118.5 | 184.9
Accrued taxes other than income | 99.0 | 111.4
Liabilities associated with discontinued operations | 98.2 | 63.8
Accrued royalties | 61.7 | 52.7
Liabilities associated with discontinued operations | 58.8 | 54.0
Operating lease liabilities | 29.6 | 0.0
Workers’ compensation obligations | 15.8 | 10.0
Accrued interest | 15.0 | 15.7
Income taxes payable | 8.4 | 7.0
Intangible take-or-pay contracts | 8.4 | 20.3
Income taxes payable | 2.6 | 10.0
Liabilities from coal trading activities | 0.0 | 1.2
Accounts payable and accrued expenses | $ 957.0 | $ 1,022.0

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