Aggregate dividends paid during the period for each share of common stock outstanding.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Name:	us-gaap_CommonStockDividendsPerShareCashPaid
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

Stockholders' Equity, Dividends (Details) - Common Class A [Member] - USD ($) $ / shares in Units, $ in Millions			12 Months Ended
	Jul. 19, 2021	Jun. 17, 2021	Sep. 30, 2021
Dividends [Abstract]
Special cash dividends (in dollars per share)		$ 1.80
Cash dividends	$ 27.1
Restricted Stock [Member]
Dividends [Abstract]
Cash dividends			$ 1.0