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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480008/505-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-SubTopic 405
-Topic 942
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481071/942-405-45-2

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+ References

No definition available.

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Temporary Equity, Stockholders' Equity and Dividends (Schedule of Quarterly Dividends Declared and Paid) (Details) - USD ($) $ / shares in Units, $ in Millions		12 Months Ended
	Mar. 06, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Fourth quarter of 2022
Dividends Payable [Line Items]
Dividend per share (usd per share)		$ 0.2700
Total dividends		$ 30.0
Special Dividend
Dividends Payable [Line Items]
Dividend per share (usd per share)	$ 1.08	$ 1.0800
Total dividends		$ 120.4
First quarter 2023
Dividends Payable [Line Items]
Dividend per share (usd per share)		$ 0.2700
Total dividends		$ 49.1
Second quarter 2023
Dividends Payable [Line Items]
Dividend per share (usd per share)		$ 0.2700
Total dividends		$ 49.2
Third quarter 2023
Dividends Payable [Line Items]
Dividend per share (usd per share)		$ 0.2700
Total dividends		$ 49.3
Fourth quarter of 2021
Dividends Payable [Line Items]
Dividend per share (usd per share)			$ 0.2500
Total dividends			$ 27.7
First quarter 2022
Dividends Payable [Line Items]
Dividend per share (usd per share)			$ 0.2500
Total dividends			$ 27.7
Second quarter 2022
Dividends Payable [Line Items]
Dividend per share (usd per share)			$ 0.2700
Total dividends			$ 29.9
Third quarter 2022
Dividends Payable [Line Items]
Dividend per share (usd per share)			$ 0.2700
Total dividends			$ 29.9
Fourth quarter of 2020
Dividends Payable [Line Items]
Dividend per share (usd per share)				$ 0.2200
Total dividends				$ 24.2
First quarter of 2021
Dividends Payable [Line Items]
Dividend per share (usd per share)				$ 0.2200
Total dividends				$ 24.3
Second quarter of 2021
Dividends Payable [Line Items]
Dividend per share (usd per share)				$ 0.2500
Total dividends				$ 27.6
Third quarter 2021
Dividends Payable [Line Items]
Dividend per share (usd per share)				$ 0.2500
Total dividends				$ 27.7