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v3.19.3.a.u2

Financial Instruments and Other Guarantees Textuals (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Apr. 01, 2017 | Dec. 31, 2017 | Dec. 31, 2019 | Dec. 31, 2018 | Apr. 03, 2017
Guarantee Obligations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Surety Bonds Outstanding | $ 1,609.2 |  |  |  |  |  |  |  |  |  | $ 1,609.2 |  |
Asset retirement obligations | 752.3 |  |  |  | $ 750.2 |  |  |  |  | $ 691.1 | 752.3 | $ 750.2 |
Surety bonds and bank guarantees outstanding to secure reclamation obligations or activities | 1,401.7 |  |  |  | 1,317.0 |  |  |  |  |  | 1,401.7 | 1,317.0 |
Letters of Credit Outstanding for Reclamation | 106.1 |  |  |  |  |  |  |  |  |  | 106.1 |  |
Letters of credit outstanding, amount | 200.5 |  |  |  |  |  |  |  |  |  | 200.5 |  |
Interest expense | 36.8 | $ 35.4 | $ 36.0 | $ 35.8 | 36.5 | $ 38.2 | $ 38.3 | $ 36.3 | $ 32.9 | 119.7 | 144.0 | 149.3 |
Provision for North Goonyella equipment loss | 58.5 |  |  | $ 24.7 | $ 17.1 | $ 49.3 |  |  | 0.0 | 0.0 | 83.2 | 66.4 |
Obligations |  |  |  |  |  |  |  |  |  |  |  |  |
Guarantee Obligations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted cash collateral | 0.0 |  |  |  |  |  |  |  |  | 323.1 | 0.0 |  |
Accounts Receivable Securitization Program, April 3, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |
Guarantee Obligations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Exit facility, maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  | $ 250.0
Line of Credit Facility, Remaining Borrowing Capacity | 45.0 |  |  |  |  |  |  |  |  |  | 45.0 |  |
Secured Debt | Accounts Receivable Securitization Program, April 3, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |
Guarantee Obligations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt | 0.0 |  |  |  |  |  |  |  |  |  | 0.0 |  |
Letters of credit outstanding, amount | 132.7 |  |  |  |  |  |  |  |  |  | 132.7 |  |
Cash collateral required | 0.0 |  |  |  |  |  |  |  |  |  | 0.0 |  |
Interest expense |  |  |  |  |  |  |  |  | $ 2.0 | $ 5.3 | 5.5 | 5.2 |
Obligations |  |  |  |  |  |  |  |  |  |  |  |  |
Guarantee Obligations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted cash collateral | $ 0.0 |  |  |  |  |  |  |  |  |  | 0.0 |  |
Australian Mining |  |  |  |  |  |  |  |  |  |  |  |  |
Guarantee Obligations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Provision for North Goonyella equipment loss |  |  |  |  |  |  |  |  |  |  | $ 0.3 | $ 50.4 |

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