Shareholders' Equity - Share Repurchase and Dividends (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	12 Months Ended
	Feb. 29, 2024	Dec. 31, 2023	Dec. 31, 2022	May 31, 2023	Aug. 31, 2022	May 31, 2021
Shareholders' Equity
Dividend declared per common share (in dollars per share)		$ 0.2
Excise tax on stock repurchases					1.00%
Subsequent Event [Member]
Shareholders' Equity
Dividend declared per common share (in dollars per share)	$ 0.05
May 2021 Repurchase Program
Shareholders' Equity
Amount approved for repurchase of common stock						$ 500.0
Common stock repurchased during the period (in shares)		315,318	4,215,094
Aggregate cost of common stock repurchased during the period		$ 22.2	$ 264.7
Remaining authorization amount for repurchase of common stock		$ 94.4
Stock repurchase program expiration date		May 31, 2023
May 2023 Repurchase Program
Shareholders' Equity
Amount approved for repurchase of common stock				$ 500.0
Common stock repurchased during the period (in shares)		2,097,119
Aggregate cost of common stock repurchased during the period		$ 130.1
Remaining authorization amount for repurchase of common stock		$ 369.9