Share-Based Compensation - Performance-Based and Restricted Stock Awards (Details) - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Performance-Based
Number of Shares (000’s)
Non-vested at beginning of period (in shares)	583,000
Granted (in shares)	342,000
Vested (in shares)	(340,000)
Cancelled and forfeited (in shares)	(13,000)
Non-vested at end of period (in shares)	572,000	583,000
Average Grant Date Fair Value
Non-vested at beginning of period (in dollars per share)	$ 226.04
Granted (in dollars per share)	385.10
Vested (in dollars per share)	174.99
Cancelled and forfeited (in dollars per share)	156.14
Non-vested at end of period (in dollars per share)	$ 281.11	$ 226.04
Restricted Stock
Number of Shares (000’s)
Non-vested at beginning of period (in shares)	646,000
Granted (in shares)	160,839
Vested (in shares)	(154,000)
Cancelled and forfeited (in shares)	(15,000)
Non-vested at end of period (in shares)	638,000	646,000
Average Grant Date Fair Value
Non-vested at beginning of period (in dollars per share)	$ 190.33
Granted (in dollars per share)	332.69	$ 260.27	$ 242.60
Vested (in dollars per share)	176.06
Cancelled and forfeited (in dollars per share)	163.12
Non-vested at end of period (in dollars per share)	$ 232.15	$ 190.33