Stock Benefit Plans (The Status Of Stock Option Awards) (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) $ / shares shares
Shares
Beginning balance (in shares) | shares	7,769,895
Granted (in shares) | shares	1,324,618
Exercised (in shares) | shares	(1,676,783)
Forfeited (in shares) | shares	(200,605)
Ending balance (in shares) | shares	7,217,125
Options vested or expected to vest (in shares) | shares	7,128,248
Options exercisable (in shares) | shares	3,988,943
Weighted Average Exercise Price
Beginning balance (in dollars per share) | $ / shares	$ 79.71
Granted (in dollars per share) | $ / shares	117.53
Exercised (in dollars per share) | $ / shares	61.42
Forfeited (in dollars per share) | $ / shares	105.98
Ending balance (in dollars per share) | $ / shares	90.17
Options vested or expected to vest (in dollars per share) | $ / shares	89.98
Options exercisable (in dollars per share) | $ / shares	$ 75.19
Weighted Average Remaining Contractual Term
Ending balance (term)	6 years 4 months 24 days
Options vested or expected to vest (term)	6 years 6 months
Options exercisable (term)	5 years 1 month 6 days
Aggregate Intrinsic Value
Ending balance | $	$ 601,999
Options vested or expected to vest | $	595,954
Options exercisable | $	$ 392,470