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Contract with Customers - Contract Cost (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020
Revenue from Contract with Customer [Abstract] |  |
Current deferred mobilization and contract preparation costs | $ 17.2 | $ 5.7
Non-current deferred mobilization and contract preparation costs | 4.4 | 0.0
Total deferred mobilization and contract preparation asset | 21.6 | $ 5.7
Increase in deferred mobilization and contract preparation costs | 15.9 |
Additional deferred contract preparation and mobilization costs | 28.5 |
Capitalized contract cost, amortization | $ 12.6 |

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- Definition Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123353750&loc=SL49131252-203054 + Details
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