Acquisitions, Goodwill and Indefinite-Lived Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2020	Sep. 30, 2021
Acquisitions, Goodwill and Indefinite-Lived Intangible Assets [Abstract]
Goodwill, Impairment Loss	$ 44.7
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	$ 1.3
Goodwill		$ 0.0
Indefinite-lived intangibles assets		$ 0.0

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
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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

+ References

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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

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