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Long-Term Obligations and Commitments, Convertible Debt and Call Spread (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Nov. 30, 2021 | Apr. 30, 2021 | Dec. 31, 2019 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2016 | Nov. 30, 2014
Convertible Debt [Abstract] |  |  |  |  |  |  |  |
Repurchase of convertible notes |  |  |  | $ 61,967 | $ 0 | $ 0 |  |
Unamortized debt issuance costs |  |  |  | 20,302 |  |  |  |
Cost of call spread |  | $ 46,900 | $ 52,600 |  |  |  |  |
Purchase of note hedges |  | 136,700 | 108,700 | 136,620 | 0 | 108,684 |  |
Proceeds from issuance of warrants |  | 89,800 | $ 56,100 | 89,752 | 0 | 56,110 |  |
Loss on early retirement of debt |  |  |  | (8,627) | 0 | (66,196) |  |
Amortization of debt discount and debt issuance costs |  |  |  | 4,900 | $ 3,200 | $ 2,900 |  |
0% Notes [Member] |  |  |  |  |  |  |  |
Convertible Debt [Abstract] |  |  |  |  |  |  |  |
Face amount of offering |  | $ 632,500 |  |  |  |  |  |
Outstanding principal balance |  |  |  | 632,500 |  |  |  |
Unamortized debt issuance costs |  |  |  | $ 13,400 |  |  |  |
Maturity date |  |  |  | Apr. 30, 2026 |  |  |  |
Interest rate |  | 0.00% | 0.00% | 0.00% |  | 0.00% |  |
Effective interest rate |  |  |  | 0.50% |  |  |  |
Conversion price per share (in dollars per share) |  |  |  | $ 57.84 |  |  |  |
Effective conversion price per share with call spread (in dollars per share) |  |  |  | $ 76.39 |  |  |  |
Total shares of common stock subject to conversion (in shares) |  |  |  | 10.9 |  |  |  |
Percentage of principal amount used as purchase price upon occurrence of fundamental change |  |  |  | 100.00% |  |  |  |
0.125% Notes [Member] |  |  |  |  |  |  |  |
Convertible Debt [Abstract] |  |  |  |  |  |  |  |
Outstanding principal balance |  |  |  | $ 548,800 |  |  |  |
Unamortized debt issuance costs |  |  |  | $ 6,500 |  |  |  |
Maturity date |  |  |  | Dec. 31, 2024 |  |  |  |
Interest rate |  |  | 0.125% | 0.125% | 0.125% | 0.125% |  |
Effective interest rate |  |  |  | 0.50% |  |  |  |
Conversion price per share (in dollars per share) |  |  |  | $ 83.28 |  |  |  |
Effective conversion price per share with call spread (in dollars per share) |  |  |  | $ 123.38 |  |  |  |
Total shares of common stock subject to conversion (in shares) |  |  |  | 6.6 |  |  |  |
Percentage of principal amount used as purchase price upon occurrence of fundamental change |  |  |  | 100.00% |  |  |  |
0.125% Convertible Senior Notes Issued in Exchange for 1 Percent Notes [Member] |  |  |  |  |  |  |  |
Convertible Debt [Abstract] |  |  |  |  |  |  |  |
Face amount of offering |  |  | $ 439,300 |  |  | $ 439,300 |  |
0.125% Convertible Senior Notes Issued under Subscription Agreements [Member] |  |  |  |  |  |  |  |
Convertible Debt [Abstract] |  |  |  |  |  |  |  |
Face amount of offering |  |  | 109,500 |  |  | 109,500 |  |
1% Notes [Member] |  |  |  |  |  |  |  |
Convertible Debt [Abstract] |  |  |  |  |  |  |  |
Face amount of offering |  |  |  |  |  |  | $ 185,500 | $ 500,000
Principal amount repurchased |  | $ 247,900 | 375,600 | $ 247,900 |  | 375,600 |  |
Repurchase of convertible notes | $ 62,000 | $ 257,000 |  |  |  |  |  |
Outstanding principal balance |  |  | $ 309,900 |  |  | $ 309,900 |  |
Interest rate | 1.00% | 1.00% | 1.00% | 1.00% | 1.00% | 1.00% | 1.00% | 1.00%
Effective interest rate |  |  |  | 1.40% |  |  |  |
Loss on early retirement of debt |  | $ 8,600 | $ (66,200) |  |  |  |  |
Percentage of principal amount used as purchase price upon occurrence of fundamental change |  |  |  | 100.00% |  |  |  |
2.75% Convertible Senior Notes [Member] |  |  |  |  |  |  |  |
Convertible Debt [Abstract] |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  | 2.75% |

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- Definition The net cash outflow from payments for hedge transactions and proceeds from the issuance of warrants. The call spread transaction was entered into to minimize the impact of potential economic dilution upon conversion of the 0.125% notes issued. + References No definition available. + Details
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