Acquisitions - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
Dec. 31, 2020	Sep. 30, 2020
Business Acquisition [Line Items]
Goodwill	$ 1,902.2	$ 1,650.3
Lifecycle Services
Business Acquisition [Line Items]
Goodwill	640.6	0.0
Software & Control
Business Acquisition [Line Items]
Goodwill	716.0	$ 0.0
Oylo And Fiix Inc.
Business Acquisition [Line Items]
Goodwill	221.8
Oylo And Fiix Inc. \| Customer Relationships, Technology, Patents
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	$ 72.1
Acquired finite-lived intangible assets, weighted average useful life	11 years
Oylo And Fiix Inc. \| Lifecycle Services
Business Acquisition [Line Items]
Goodwill	$ 12.4
Oylo And Fiix Inc. \| Software & Control
Business Acquisition [Line Items]
Goodwill	$ 209.4

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
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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://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
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