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Capital Stock (Textuals) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Sep. 30, 2021	Aug. 24, 2015
Equity, Class of Treasury Stock [Line Items]
Shares repurchased (less than $1 million)			$ 45.0
Share Repurchase Programs
Equity, Class of Treasury Stock [Line Items]
Shares repurchased (in shares - less than 0.1 million)	100,000	600,000
Shares repurchased (less than $1 million)	$ 8.0	$ 51.0
2015 Stock Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount				$ 500.0
Shares repurchased (in shares - less than 0.1 million)		500,000
Shares repurchased (less than $1 million)		$ 45.0
Remaining authorized amount of repurchase	$ 182.0
Settlement of Employee Tax Withholding Obligations
Equity, Class of Treasury Stock [Line Items]
Shares repurchased (in shares - less than 0.1 million)	100,000	100,000
Shares repurchased (less than $1 million)	$ 8.0	$ 6.0

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