Goodwill and Intangible Assets - Schedule of Goodwill (Details) - USD ($) $ in Millions	4 Months Ended	8 Months Ended	12 Months Ended
Dec. 31, 2021	Sep. 07, 2021	Dec. 31, 2020
Goodwill [Roll Forward]
Goodwill, beginning balance (remeasured upon merger)	$ 0.0
Merger	646.3
Goodwill, ending balance (remeasured upon merger)	646.3
Goodwill, beginning balance		$ 161.5	$ 160.5
Currency translations		0.7	1.0
Goodwill, ending balance	646.3	162.2	161.5
IT Services and Hardware [Member] \| Operating Segments [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance (remeasured upon merger)	0.0
Merger	157.4
Goodwill, ending balance (remeasured upon merger)	157.4
Goodwill, beginning balance		149.1	148.1
Currency translations		0.7	1.0
Goodwill, ending balance		149.8	149.1
Network [Member] \| Operating Segments [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance (remeasured upon merger)	0.0
Merger	488.9
Goodwill, ending balance (remeasured upon merger)	$ 488.9
Goodwill, beginning balance		12.4	12.4
Goodwill, ending balance		$ 12.4	$ 12.4

Goodwill remeasured.

No definition available.

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(10)(1))
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
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-Section 55
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- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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