Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6613-128477

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6578-128477

Name:	us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Acquisitions - Additional information (Details) - USD ($) $ in Millions			6 Months Ended
	Apr. 02, 2029	Apr. 02, 2019	Jun. 30, 2019	Jun. 30, 2018
Acquisitions
Cash Consideration			$ 71.9	$ 37.6
2019 Acquisitions
Acquisitions
Consideration	$ 52.2		18.6
Maximum additional consideration		$ 5.0
Cash Consideration			16.4
Arxspan, LLC
Acquisitions
Consideration			16.6
Cash Consideration			14.4
Ampegon PPT GmbH
Acquisitions
Consideration			2.0
Cash Consideration			$ 2.0