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Acquisitions - Narrative (Details) $ in Millions	Oct. 26, 2020 USD ($)	Jan. 03, 2021 USD ($)	Sep. 30, 2020 USD ($)
Business Acquisition [Line Items]
Goodwill		$ 1,432.9	$ 1,332.0
Armitage
Business Acquisition [Line Items]
Payment to acquire business	$ 187.7
Goodwill	$ 90.7
Armitage | Measurement Input, Royalty Rate | Valuation, Income Approach | Good Boy Trade Name
Business Acquisition [Line Items]
Intangible asset, measurement input	0.08
Armitage | Measurement Input, Royalty Rate | Valuation, Income Approach | Wildbird Trade Name
Business Acquisition [Line Items]
Intangible asset, measurement input	0.03
Armitage | Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow
Business Acquisition [Line Items]
Intangible asset, measurement input	0.11

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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
-Section S99
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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
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