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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

Capitalized Contract Cost, Additional Cost Capitalized

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Increase (Decrease) In Deferred Contract Cost

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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

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Amount of deferred cost, excluding capitalized cost related to contract with customer; classified as noncurrent.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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-Name Accounting Standards Codification
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-SubTopic 210
-Section S99
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Sum of the carrying amounts as of the balance sheet date of deferred costs capitalized at the end of the reporting period that are expected to be charged against earnings within one year or the normal operating cycle, if longer.

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The carrying amount of deferred costs.

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