Share-Based Compensation and Benefit Plans (Employee Share Purchase Plan Activity) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-Based Payment Arrangement, Noncash Expense [Abstract]
Stock Issued During Period, Shares, Employee Stock Purchase Plans	15,353	29,857	22,496
Weighted Average Fair Value Of Shares Purchased Under Employee Share Purchase Plan	$ 119.15	$ 141.64	$ 95.97
Employee Stock Ownership Plan (ESOP), Compensation Expense	$ 0.2	$ 1.2	$ 0.3

Number of shares issued during the period as a result of an employee stock purchase plan.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Name:	us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration