Goodwill (Goodwill by Segment) (Details) - USD ($) $ in Millions	Sep. 27, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill [Line Items]
Total goodwill	$ 3,283.2	$ 3,325.5	$ 3,370.0	$ 3,215.6
Specialty Products & Technologies
Goodwill [Line Items]
Total goodwill	1,999.5	2,013.8	2,028.6	1,958.8
Equipment & Consumables
Goodwill [Line Items]
Total goodwill	$ 1,283.7	$ 1,311.7	$ 1,341.4	$ 1,256.8

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.

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

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266

Name:	us-gaap_Goodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant