Share-Based Compensation (Schedule of Stock Option Activity) (Details) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) $ / shares shares
Number of Options
Outstanding, at beginning of year (in shares) | shares	1,953
Granted (in shares) | shares	144
Exercised (in shares) | shares	(310)
Forfeited (in shares) | shares	(30)
Outstanding, at end of year (in shares) | shares	1,757
Fully vested, at end of year (in shares) | shares	1,109
Fully vested and expected to vest, at end of year (in shares) | shares	1,738
Weighted Average Exercise Price
Weighted average exercise price of beginning balance of options outstanding (in USD per share) | $ / shares	$ 149.32
Weighted average exercise price of options granted (in USD per share) | $ / shares	550.10
Weighted average exercise price of options exercised (in USD per share) | $ / shares	102.78
Weighted average exercise price of options forfeited (in USD per share) | $ / shares	261.95
Weighted average exercise price of ending balance of options outstanding (in USD per share) | $ / shares	188.47
Weighted average exercise price of options fully vested (in USD per share) | $ / shares	127.30
Weighted average exercise price of options fully vested and expected to vest (in USD per share) | $ / shares	$ 186.72
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted average remaining contractual term of ending balance of options outstanding	5 years 9 months 18 days
Weighted average remaining contractual term of options fully vested	4 years 9 months 18 days
Weighted average remaining contractual term of options fully vested and expected to vest	5 years 8 months 12 days
Aggregate intrinsic value | $	$ 825,745
Aggregate intrinsic value of options fully vested | $	588,831
Aggregate intrinsic value of options expected to vest | $	$ 819,777