Contingencies (Details) $ in Millions			1 Months Ended		2 Months Ended	9 Months Ended
	Oct. 25, 2021 USD ($)	Apr. 26, 2015	Jan. 31, 2010 USD ($)	Apr. 30, 1999 USD ($)	Jan. 31, 2020 stockholder	Sep. 30, 2021 child lawsuit class	Nov. 11, 2014 USD ($)	Jul. 26, 2013 USD ($)
Yellowstone
Loss Contingencies [Line Items]
Alleged loss of profits				$ 1.0
Unpaid accounts receivable				4.0
Alleged business investments				3.0
Initial estimate of loss of profits				$ 1.0
Court awarded damages from counterclaim			$ 4.0
Damages awarded, including attorney fees, inflation and interest								$ 17.0
Counter claim awarded, including inflation							$ 7.5	$ 7.5
Damages award including inflation and interest							$ 14.5
Fine on claims (as a percent)		1.00%
Sleeper
Loss Contingencies [Line Items]
Number of additional lawsuits pending | lawsuit						40
Number of children with injuries or fatalities related to lawsuits | child						44
Whistleblower Letter
Loss Contingencies [Line Items]
Number of additional lawsuits pending | lawsuit						5
Number of stockholders who filed complaints | stockholder					2
Whistleblower Letter | Subsequent Event
Loss Contingencies [Line Items]
Litigation settlement, amount awarded to other party	$ 86.0
Minimum | Sleeper
Loss Contingencies [Line Items]
Number of consumer classes | class						15