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Restructuring Activities - Rollforward (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Restructuring Reserve
Beginning Balance, Restructuring Accrual	$ 2.8	$ 7.3
Restructuring costs	0.9	4.6
Cash payments	(1.1)	(5.3)
Change in estimates	(0.7)
Ending Balance, Restructuring Reserve	1.9	6.6
Operating Segments | Energy & Chemicals
Restructuring Reserve
Beginning Balance, Restructuring Accrual	0.2	0.1
Restructuring costs	0.2	0.4
Cash payments	(0.2)	(0.5)
Change in estimates	0.0
Ending Balance, Restructuring Reserve	0.2	0.0
Operating Segments | Distribution & Storage
Restructuring Reserve
Beginning Balance, Restructuring Accrual	1.2	2.9
Restructuring costs	0.2	0.1
Cash payments	(0.6)	(0.7)
Change in estimates	(0.7)
Ending Balance, Restructuring Reserve	0.1	2.3
Operating Segments | BioMedical
Restructuring Reserve
Beginning Balance, Restructuring Accrual	0.3	1.3
Restructuring costs	0.0	2.6
Cash payments	(0.1)	(2.5)
Change in estimates	0.0
Ending Balance, Restructuring Reserve	0.2	1.4
Corporate
Restructuring Reserve
Beginning Balance, Restructuring Accrual	1.1	3.0
Restructuring costs	0.5	1.5
Cash payments	(0.2)	(1.6)
Change in estimates	0.0
Ending Balance, Restructuring Reserve	$ 1.4	$ 2.9

X

- Definition

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585

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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 5.P.3)
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-Topic 420
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- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

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Amount of increase (decrease) in the accrual for restructuring costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

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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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