Stock-Based Compensation (Performance Stock Units Assumptions) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Schedule Of Share Based Payment Award Performance Share Units Valuation Assumptions [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	1.80%	0.60%	1.40%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	5 years	5 years	5 years
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	36.90%	36.90%	29.40%
Performance Stock Units
Schedule Of Share Based Payment Award Performance Share Units Valuation Assumptions [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	1.70%	0.20%	1.40%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	2 years 10 months 13 days	2 years 10 months 13 days	2 years 10 months 17 days
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	49.30%	49.40%	32.00%
Share Base Compensation Average Correlation Coefficient of Peer Companies	0.66	0.65	0.49
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 147.98	$ 109.94	$ 74.61
Minimum | Performance Stock Units
Schedule Of Share Based Payment Award Performance Share Units Valuation Assumptions [Line Items]
Share Based Compensation Arrangements Expected Volatility Rate of Peer Companies	30.80%	30.70%	15.70%
Maximum | Performance Stock Units
Schedule Of Share Based Payment Award Performance Share Units Valuation Assumptions [Line Items]
Share Based Compensation Arrangements Expected Volatility Rate of Peer Companies	67.20%	65.60%	47.40%