Goodwill and Other Intangible Assets, Goodwill (Details) $ in Millions	3 Months Ended
Mar. 31, 2021 USD ($)
Goodwill.
Goodwill, Beginning Balance	$ 5,032.1
Acquisition-related	108.1
Foreign currency translation	(47.2)
Goodwill, Ending Balance	5,093.0
Interconnect Products and Assemblies
Goodwill.
Goodwill, Beginning Balance	4,874.5
Acquisition-related	96.5
Foreign currency translation	(47.2)
Goodwill, Ending Balance	4,923.8
Cable Products and Solutions
Goodwill.
Goodwill, Beginning Balance	157.6
Acquisition-related	11.6
Foreign currency translation	0.0
Goodwill, Ending Balance	$ 169.2

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://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))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 2: 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=120320667&loc=SL49117168-202975

Reference 3: 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

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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
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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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