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Commitments and Contingencies - Narrative (Details) | Dec. 31, 2019 USD ($) | Oct. 31, 2019 USD ($) | Oct. 31, 2018 USD ($) | Feb. 08, 2018 claim
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Purchase Commitment, Excluding Long-term Commitment [Line Items] |  |  |  |
Number of pending claims | claim |  |  |  | 2
Purchase commitments, total | $ 579,200,000 |  |  |
Affiliated |  |  |  |
Purchase Commitment, Excluding Long-term Commitment [Line Items] |  |  |  |
Purchase commitments, total | $ 134,000,000.0 |  |  |
Standby Letters of Credit | Bank of America 2018 Credit Agreement | Bank of America | Revolving Credit Facility |  |  |  |
Purchase Commitment, Excluding Long-term Commitment [Line Items] |  |  |  |
Credit facility, maximum borrowing capacity |  | $ 6,400,000 | $ 3,200,000 |

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