Stock-Based Compensation (Summary of Restricted Stock Unit and Performance Based Restricted Stock Unit Activity) (Details) shares in Thousands	9 Months Ended
	Sep. 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	175
Number of Shares, Vested | shares	(118)
Number of Shares, Forfeited/canceled | shares	(13)
Number of Shares, Outstanding | shares	266
Weighted-Average Grant Date Fair Value per Share, Outstanding | $ / shares	$ 280.66
Weighted-Average Grant Date Fair Value per Share, Granted | $ / shares	254.60
Weighted-Average Grant Date Fair Value per Share, Vested | $ / shares	264.39
Weighted-Average Grant Date Fair Value per Share, Forfeited/canceled | $ / shares	276.96
Weighted-Average Grant Date Fair Value per Share, Outstanding | $ / shares	$ 270.40
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	97
Number of Shares, Adjustment | shares	65
Number of Shares, Vested | shares	(207)
Number of Shares, Forfeited/canceled | shares	(15)
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	263.17
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	298.42
Weighted-Average Grant Date Fair Value per Share, Outstanding | $ / shares	$ 298.50
Performance period	3 years