Stock-based Compensation (Compensation Cost and Related Tax Benefits) (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Share-Based Payment Arrangement [Abstract]
Stock-based compensation expense	$ 7.1	$ 6.7
Tax benefit	(1.5)	(1.4)
Stock-based compensation expense, net of taxes	$ 5.6	$ 5.3

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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Amount, after tax, of expense for award under share-based payment arrangement.

+ References

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- References

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- Definition

Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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