Stockholders' Equity and Stock-Based Compensation (Summary of Options Outstanding) (Details) shares in Millions	12 Months Ended
	Dec. 31, 2022 $ / shares shares
Range One
Options, exercise price, lower range limit (in usd per share)	$ 39.6
Options, exercise price, upper range limit (in usd per share)	$ 66.79
Outstanding, shares (in millions) (in shares) | shares	1.8
Outstanding, average exercise price (in usd per share)	$ 62.75
Outstanding, average remaining life (in years)	2 years
Exercisable, shares (in millions) (in shares) | shares	1.8
Exercisable, average exercise price (in usd per share)	$ 62.75
Range Two
Options, exercise price, lower range limit (in usd per share)	66.8
Options, exercise price, upper range limit (in usd per share)	$ 92.41
Outstanding, shares (in millions) (in shares) | shares	2.4
Outstanding, average exercise price (in usd per share)	$ 81.60
Outstanding, average remaining life (in years)	4 years
Exercisable, shares (in millions) (in shares) | shares	2.4
Exercisable, average exercise price (in usd per share)	$ 81.60
Range Three
Options, exercise price, lower range limit (in usd per share)	92.42
Options, exercise price, upper range limit (in usd per share)	$ 141.10
Outstanding, shares (in millions) (in shares) | shares	4.4
Outstanding, average exercise price (in usd per share)	$ 107.41
Outstanding, average remaining life (in years)	5 years
Exercisable, shares (in millions) (in shares) | shares	2.7
Exercisable, average exercise price (in usd per share)	$ 105.90
Range Four
Options, exercise price, lower range limit (in usd per share)	141.11
Options, exercise price, upper range limit (in usd per share)	$ 249.18
Outstanding, shares (in millions) (in shares) | shares	4.2
Outstanding, average exercise price (in usd per share)	$ 185.12
Outstanding, average remaining life (in years)	7 years
Exercisable, shares (in millions) (in shares) | shares	1.1
Exercisable, average exercise price (in usd per share)	$ 173.94
Range Five
Options, exercise price, lower range limit (in usd per share)	249.19
Options, exercise price, upper range limit (in usd per share)	$ 299.68
Outstanding, shares (in millions) (in shares) | shares	2.9
Outstanding, average exercise price (in usd per share)	$ 272.79
Outstanding, average remaining life (in years)	9 years
Exercisable, shares (in millions) (in shares) | shares	0.2
Exercisable, average exercise price (in usd per share)	$ 283.43