Stock Benefit Plans (The Status Of Stock Option Awards) (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) $ / shares shares
Shares
Beginning balance (in shares) | shares	7,533,045
Granted (in shares) | shares	699,662
Exercised (in shares) | shares	(1,537,473)
Forfeited (in shares) | shares	(99,472)
Ending balance (in shares) | shares	6,595,762
Options vested or expected to vest (in shares) | shares	6,542,158
Options exercisable (in shares) | shares	4,320,314
Weighted Average  Exercise Price
Beginning balance (in dollars per share) | $ / shares	$ 99.18
Granted (in dollars per share) | $ / shares	164.15
Exercised (in dollars per share) | $ / shares	75.59
Forfeited (in dollars per share) | $ / shares	143.89
Ending balance (in dollars per share) | $ / shares	110.90
Options vested or expected to vest (in dollars per share) | $ / shares	110.66
Options exercisable (in dollars per share) | $ / shares	$ 94.59
Weighted Average Remaining Contractual Term
Ending balance (term)	5 years 2 months 12 days
Options vested or expected to vest (term)	5 years 2 months 12 days
Options exercisable (term)	4 years 2 months 12 days
Aggregate Intrinsic Value ($000)
Ending balance | $	$ 514,853
Options vested or expected to vest | $	512,214
Options exercisable | $	$ 407,683