Stock-Based Compensation (Summary of Restricted Stock Unit and Performance Based Restricted Stock Unit Activity) (Details) shares in Thousands	6 Months Ended
	Jun. 30, 2023 $ / shares shares
Restricted Stock Units (RSUs) [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Shares, Outstanding | shares	222
Number of Shares, Granted | shares	171
Number of Shares, Vested | shares	(117)
Number of Shares, Forfeited/canceled | shares	(11)
Number of Shares, Outstanding | shares	265
Weighted-Average Grant Date Fair Value per Share, Outstanding | $ / shares	$ 280.66
Weighted-Average Grant Date Fair Value per Share, Granted | $ / shares	255.36
Weighted-Average Grant Date Fair Value per Share, Vested | $ / shares	263.75
Weighted-Average Grant Date Fair Value per Share, Forfeited/canceled | $ / shares	278.05
Weighted-Average Grant Date Fair Value per Share, Outstanding | $ / shares	$ 271.40
Performance Stock Units (PSUs) [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Shares, Outstanding | shares	429
Number of Shares, Granted | shares	96
Number of Shares, Adjustment | shares	65
Number of Shares, Vested | shares	(207)
Number of Shares, Forfeited/canceled | shares	(14)
Number of Shares, Outstanding | shares	369
Weighted-Average Grant Date Fair Value per Share, Outstanding | $ / shares	$ 332.18
Weighted-Average Grant Date Fair Value per Share, Granted | $ / shares	263.35
Weighted-Average Grant Date Fair Value per Share, Adjustment | $ / shares	302.96
Weighted-Average Grant Date Fair Value per Share, Vested | $ / shares	345.08
Weighted-Average Grant Date Fair Value per Share, Forfeited/canceled | $ / shares	298.10
Weighted-Average Grant Date Fair Value per Share, Outstanding | $ / shares	$ 298.65
Performance period	3 years