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Stock Based Compensation and Other Incentive Compensation - Performance Units (Details) - Performance Units [Member] - Free Cash Flow (FCF) Awards [Member] - USD ($) shares in Millions, $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Incentive compensation arrangement, by award, grants in period | 13.6 | 14.2
Incentive compensation arrangement, cost not yet recognized, amount | $ 13.7 |
Incentive compensation arrangement, cost not yet recognized, period for recognition | 2 years |

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- Definition Incentive compensation arrangement, by award, grants in period + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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