Common Stock, Preferred Stock and Equity Plans - Outstanding and Vested Stock Options (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands |
12 Months Ended |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
| Stock Options |
|
|
|
| Stock options outstanding at beginning of period (in shares) |
8,551
|
|
|
| Stock options granted (in shares) |
1,521
|
|
|
| Stock options exercised (in shares) |
(3,327)
|
|
|
| Stock options forfeited (in shares) |
(467)
|
|
|
| Stock options expired (in shares) |
(6)
|
|
|
| Stock options outstanding at end of period (in shares) |
6,272
|
8,551
|
|
| Stock options exercisable at end of period (in shares) |
3,333
|
|
|
| Weighted-average Exercise Price |
|
|
|
| Weighted-average exercise price outstanding at beginning of period (usd per share) |
$ 111.46
|
|
|
| Weighted average exercise price, granted (usd per share) |
184.50
|
|
|
| Weighted average exercise price, exercised (usd per share) |
95.57
|
|
|
| Weighted average exercise price, forfeited (usd per share) |
146.59
|
|
|
| Weighted average exercise price, expired (usd per share) |
182.96
|
|
|
| Weighted-average exercise price outstanding at end of period (usd per share) |
134.92
|
$ 111.46
|
|
| Weighted average exercise price exercisable at the end of the period (usd per share) |
$ 114.15
|
|
|
| Weighted-average Remaining Contractual Life |
|
|
|
| Weighted-average Remaining Contractual Life, outstanding (in years) |
7 years 1 month 13 days
|
|
|
| Weighted-average Remaining Contractual Life, exercisable (in years) |
6 years 21 days
|
|
|
| Aggregate Intrinsic Value |
|
|
|
| Aggregate intrinsic value, outstanding |
$ 522,740
|
|
|
| Aggregate intrinsic value, exercisable |
346,943
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Total intrinsic value of stock options exercised |
325,900
|
$ 258,200
|
$ 302,800
|
| Total cash received from employees as a result of employee stock option exercises |
$ 317,800
|
$ 263,400
|
$ 323,300
|
| Weighted Average |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Market share price (usd per share) |
$ 218.26
|
|
|