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Goodwill and Other Intangible Assets - Changes in goodwill by reportable segment (Details) - USD ($)	6 Months Ended	10 Months Ended	12 Months Ended
	Jun. 30, 2019	Oct. 31, 2018	Dec. 31, 2018
Goodwill
Balance at the beginning of the period	$ 232,800,000	$ 321,300,000	$ 321,300,000
Foreign currency impact	(100,000)		(6,300,000)
Goodwill impairment	0	(82,200,000)
Balance at the end of the period	232,700,000		232,800,000
Americas
Goodwill
Balance at the beginning of the period	166,500,000	166,500,000	166,500,000
Balance at the end of the period	166,500,000		166,500,000
Europe and Africa ("EURAF")
Goodwill
Balance at the beginning of the period		85,900,000	85,900,000
Foreign currency impact			(3,700,000)
Goodwill impairment		(82,200,000)
Middle East and Asia Pacific ("MEAP")
Goodwill
Balance at the beginning of the period	66,300,000	$ 68,900,000	68,900,000
Foreign currency impact	(100,000)		(2,600,000)
Balance at the end of the period	$ 66,200,000		$ 66,300,000

X

- 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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

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-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266

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X

- Definition

Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill.

+ References

No definition available.

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267

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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.

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