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v3.20.1

Derivatives and Fair Value Measurements - Derivatives by Balance Sheet Classification (Details) - Designated as Hedging Instrument - USD ($) $ in Millions | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Asset Derivative |  |
Total derivatives | $ 90.9 | $ 102.3
Effect of counterparty netting | (69.6) | (74.3)
Variation margin (held) posted | (16.8) | (22.1)
Net derivatives and margin as classified in the balance sheets | 4.5 | 5.9
Liability Derivative |  |
Total derivatives | (70.4) | (74.3)
Effect of counterparty netting | 69.6 | 74.3
Variation margin (held) posted | 0.0 | 0.0
Net derivatives and margin as classified in the balance sheets | (0.8) | 0.0
Foreign currency option contracts |  |
Asset Derivative |  |
Foreign currency option contracts | 0.2 | 1.1
Liability Derivative |  |
Foreign currency option contracts | 0.0 | 0.0
Coal contracts related to forecasted sales |  |
Asset Derivative |  |
Coal contracts related to forecasted sales | 18.9 | 20.1
Liability Derivative |  |
Coal contracts related to forecasted sales | (0.8) | (0.1)
Coal trading contracts |  |
Asset Derivative |  |
Coal trading contracts | 71.8 | 81.1
Liability Derivative |  |
Coal trading contracts | $ (69.6) | $ (74.2)

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