Common Stock and Stock-Based Compensation Stockholders Equity (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 09, 2022
Share Repurchases [Line Items]
Treasury Stock, Value, Acquired, Cost Method		$ 14.1	$ 25.3
Share-based Payment Arrangement, Cash Used to Settle Award		$ 2.6
Treasury Stock
Share Repurchases [Line Items]
Treasury Stock, Shares, Acquired		0.6	1.0
Treasury Stock, Value, Acquired, Cost Method		$ 14.1	$ 25.3
December 2022 Share Repurchase Program
Share Repurchases [Line Items]
Stock Repurchase Program, Authorized Amount						$ 250.0
Treasury Stock, Value, Acquired, Cost Method	$ 0.0			$ 0.0
2021-2022 Share Repurchase Program
Share Repurchases [Line Items]
Treasury Stock, Shares, Acquired		0.6			2.4
Treasury Stock, Value, Acquired, Cost Method		$ 14.1			$ 64.4
Accelerated Share Repurchase Program
Share Repurchases [Line Items]
Treasury Stock, Shares, Acquired					0.8
Treasury Stock, Value, Acquired, Cost Method			$ 0.0
Accelerated Share Repurchase Program | Treasury Stock
Share Repurchases [Line Items]
Treasury Stock, Shares, Acquired			0.8
Treasury Stock, Value, Acquired, Cost Method			$ 25.0		$ 25.0