Note 13. Common Stock and Stock-based Compensation Stockholders Equity (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 09, 2022	Sep. 09, 2021
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Treasury Stock, Value, Acquired, Cost Method		$ 21.0		$ 51.8
Share-Based Payment Arrangement, Cash Used to Settle Award		0.3
Treasury Stock, Value		$ 0.6	$ 0.6
December 2022 Share Repurchase Program
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock Repurchase Program, Authorized Amount					$ 250.0
Treasury Stock, Shares, Acquired		0.6
Treasury Stock, Value, Acquired, Cost Method		$ 21.0
Stock Repurchase Program, Remaining Authorized Repurchase Amount		$ 229.0
2021-2022 Share Repurchase Program
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock Repurchase Program, Authorized Amount						$ 250.0
Stock Repurchase Program, Remaining Authorized Repurchase Amount				21.3
Accelerated Share Repurchase Program
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock Repurchase Program, Authorized Amount	$ 125.0
Treasury Stock, Shares, Acquired	3.3
Treasury Stock, Value, Acquired, Cost Method				$ 0.0
Treasury Stock, Value	$ 100.0
Treasury Stock, Common
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Treasury Stock, Shares, Acquired		0.6		2.0
Treasury Stock, Value, Acquired, Cost Method		$ 21.0		$ 51.8
Treasury Stock, Common | December 2022 Share Repurchase Program
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Treasury Stock, Shares, Acquired			0.0
Treasury Stock, Common | 2021-2022 Share Repurchase Program
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Treasury Stock, Shares, Acquired				2.8
Treasury Stock, Value, Acquired, Cost Method				$ 76.8
Treasury Stock, Common | Accelerated Share Repurchase Program
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Treasury Stock, Shares, Acquired				0.8
Treasury Stock, Value, Acquired, Cost Method				$ 25.0