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v3.19.3.a.u2

Long-Term Obligations and Commitments, Convertible Notes (Details) $ / shares in Units, $ in Thousands, shares in Millions | 1 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2019 USD ($) $ / shares | Dec. 31, 2019 USD ($) shares $ / shares | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Sep. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2016 USD ($) | Nov. 30, 2014 USD ($)
Convertible Notes [Abstract] |  |  |  |  |  |  |  |  |
Cost of call spread |  | $ 52,600 |  |  |  |  |  |  |
Purchase of note hedges |  | 108,700 | $ 108,684 | $ 0 | $ 0 |  |  |  |
Proceeds from issuance of warrants |  | $ 56,100 | $ 56,110 | 0 | 0 |  |  |  |
Conversion price per share, including note hedges (in dollars per share) | $ / shares |  | $ 123.38 | $ 123.38 |  |  |  |  |  |
Loss on early retirement of debt |  |  | $ (21,865) | 0 | 0 |  |  |  |
Amortization of debt discount and debt issuance costs |  |  | $ 39,300 | $ 35,200 | $ 32,500 |  |  |  |
0.125% Convertible Senior Notes [Member] |  |  |  |  |  |  |  |  |
Convertible Notes [Abstract] |  |  |  |  |  |  |  |  |
Maturity date |  |  | Dec. 15, 2024 |  |  |  |  |  |
Interest rate |  | 0.125% | 0.125% | 0.125% |  |  |  |  |
Conversion price per share (in dollars per share) | $ / shares |  | $ 83.28 | $ 83.28 |  |  |  |  |  |
Total shares of common stock subject to conversion (in shares) | shares |  |  | 6.6 |  |  |  |  |  |
Percentage of principal amount used as purchase price upon occurrence of fundamental change |  |  | 100.00% |  |  |  |  |  |
Principal amount of convertible notes outstanding |  | $ 548,800 | $ 548,800 |  |  |  |  |  |
Unamortized portion of debt discount |  | 105,200 | 105,200 |  |  |  |  |  |
Long-term debt |  | 434,711 | 434,711 | $ 0 |  |  |  |  |
Carrying value of equity component |  | $ 105,800 | $ 105,800 |  |  |  |  |  |
Effective interest rate |  | 4.90% | 4.90% |  |  |  |  |  |
Amortization period of debt discount |  |  | 5 years |  |  |  |  |  |
0.125% Convertible Senior Notes [Member] | Level 2 [Member] |  |  |  |  |  |  |  |  |
Convertible Notes [Abstract] |  |  |  |  |  |  |  |  |
Fair value of outstanding notes |  | $ 558,700 | $ 558,700 |  |  |  |  |  |
0.125% Convertible Senior Notes [Member] | Borrowing Rate [Member] |  |  |  |  |  |  |  |  |
Convertible Notes [Abstract] |  |  |  |  |  |  |  |  |
Nonconvertible debt measurement input rate |  | 0.044 | 0.044 |  |  |  |  |  |
0.125 Percent Convertible Senior Notes Issued in Exchange for 1 Percent Notes [Member] |  |  |  |  |  |  |  |  |
Convertible Notes [Abstract] |  |  |  |  |  |  |  |  |
Face amount of offering |  | $ 439,300 | $ 439,300 |  |  |  |  |  |
0.125 Percent Convertible Senior Notes Issued under Subscription Agreements [Member] |  |  |  |  |  |  |  |  |
Convertible Notes [Abstract] |  |  |  |  |  |  |  |  |
Face amount of offering |  | 109,500 | 109,500 |  |  |  |  |  |
1% Convertible Senior Notes [Member] |  |  |  |  |  |  |  |  |
Convertible Notes [Abstract] |  |  |  |  |  |  |  |  |
Principal amount repurchased |  | $ 375,600 | $ 375,600 |  |  |  |  |  |
Face amount of offering |  |  |  |  |  |  |  | $ 185,500 | $ 500,000
Maturity date |  |  | Nov. 30, 2021 |  |  |  |  |  |
Interest rate |  | 1.00% | 1.00% | 1.00% |  | 1.00% | 1.00% |  |
Conversion price per share (in dollars per share) | $ / shares |  | $ 66.81 | $ 66.81 |  |  |  |  |  |
Total shares of common stock subject to conversion (in shares) | shares |  |  | 4.6 |  |  |  |  |  |
Percentage of principal amount used as purchase price upon occurrence of fundamental change |  |  | 100.00% |  |  |  |  |  |
Principal amount of convertible notes outstanding |  | $ 309,900 | $ 309,900 | $ 685,500 |  |  |  |  |
Unamortized portion of debt discount |  | 32,800 | 32,800 | 110,800 |  |  |  |  |
Long-term debt |  | 275,333 | 275,333 | 568,215 |  |  |  |  |
Carrying value of equity component |  | 33,500 | $ 33,500 | 219,000 |  |  |  |  |
Loss on early retirement of debt |  | $ 21,900 |  |  |  |  |  |  |
Effective interest rate | [1] | 7.50% | 7.50% |  |  |  |  |  |
Amortization period of debt discount |  |  | 7 years |  |  |  |  |  |
1% Convertible Senior Notes [Member] | Level 2 [Member] |  |  |  |  |  |  |  |  |
Convertible Notes [Abstract] |  |  |  |  |  |  |  |  |
Fair value of outstanding notes |  | $ 354,800 | $ 354,800 | $ 725,000 |  |  |  |  |
1% Convertible Senior Notes [Member] | Borrowing Rate [Member] |  |  |  |  |  |  |  |  |
Convertible Notes [Abstract] |  |  |  |  |  |  |  |  |
Nonconvertible debt measurement input rate |  | 0.074 | 0.074 |  |  |  |  |  |
2 3/4 Percent Convertible Senior Notes [Member] |  |  |  |  |  |  |  |  |
Convertible Notes [Abstract] |  |  |  |  |  |  |  |  |
Principal amount repurchased |  |  |  |  |  |  |  | $ 61,100 | $ 140,000
Interest rate |  | 2.75% | 2.75% |  |  |  |  |  |
[1] | For our 1% Notes, our effective interest rate represents our effective interest rate after our December 2019 debt exchange.

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