Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Name:	us-gaap_StockRepurchasedDuringPeriodShares
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Subsequent Events (Details) - KAF - Forward Share Purchase Agreement - USD ($) $ in Millions	1 Months Ended
	Apr. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Oct. 31, 2021
Subsequent Event [Line Items]
Escrow deposit		$ 18.1	$ 18.1	$ 18.1
Subsequent Event
Subsequent Event [Line Items]
Number of shares repurchased (in shares)	1,700,000
Escrow deposit	$ 18.5