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Fair Value of Financial Instruments (Tables) | 6 Months Ended
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Jun. 30, 2019
Fair Value Disclosures [Abstract] |
Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis | Our assets and liabilities that were measured at fair value on a recurring basis were as follows (in thousands):
|  | June 30, 2019 |  |  | December 31, 2018 |
|  | Fair Value |  |  | Level I |  |  | Level II |  |  | Level III |  |  | Fair Value |  |  | Level I |  |  | Level II |  |  | Level III |
Money market funds (cash and cash equivalents & restricted cash) |  | $ | 1,723,321 |  |  | $ | 1,723,321 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,812,828 |  |  | $ | 1,812,828 |  |  | $ | — |  |  | $ | — |
Interest rate swap (liability) asset, net |  |  | (26,839 | ) |  |  | — |  |  |  | (26,839 | ) |  |  | — |  |  |  | 11,070 |  |  |  | — |  |  |  | 11,070 |  |  |  | — |
Total |  | $ | 1,696,482 |  |  | $ | 1,723,321 |  |  | $ | (26,839 | ) |  | $ | — |  |  | $ | 1,823,898 |  |  | $ | 1,812,828 |  |  | $ | 11,070 |  |  | $ | — |
Schedule of Interest Rate Swaps Outstanding | Our interest rate swaps outstanding were as follows (in thousands):
|  | June 30, 2019 |  |  | December 31, 2018 |
|  | Aggregate Notional Amount |  |  | Gross Asset at Fair Value |  |  | Gross Liability at Fair Value |  |  | Aggregate Notional Amount |  |  | Gross Asset at Fair Value |  |  | Gross Liability at Fair Value |
Interest rate swaps |  | $ | 862,853 |  |  | $ | 1,517 |  |  | $ | 28,356 |  |  | $ | 800,293 |  |  | $ | 12,159 |  |  | $ | 1,089 |
Our interest rate swaps activity was as follows (in thousands):
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Gross gains |  | $ | — |  |  | $ | 2,747 |  |  | $ | 155 |  |  | $ | 12,410 |
Gross losses |  | $ | 18,521 |  |  | $ | 1,170 |  |  | $ | 37,964 |  |  | $ | 1,205 |
Schedule of Estimated Fair Values and Carrying Values | The following table presents the estimated fair values and the carrying values (in thousands):
|  | June 30, 2019 |  |  | December 31, 2018 |
|  | Carrying Value |  |  | Fair Value |  |  | Carrying Value |  |  | Fair Value |
Convertible senior notes |  | $ | 4,150,996 |  |  | $ | 4,727,156 |  |  | $ | 3,660,316 |  |  | $ | 4,346,642 |
Senior notes |  | $ | 1,780,345 |  |  | $ | 1,584,000 |  |  | $ | 1,778,756 |  |  | $ | 1,575,000 |
Participation interest |  | $ | 19,802 |  |  | $ | 19,285 |  |  | $ | 18,946 |  |  | $ | 18,431 |
Solar asset-backed notes |  | $ | 1,169,430 |  |  | $ | 1,214,611 |  |  | $ | 1,183,675 |  |  | $ | 1,206,755 |
Solar loan-backed notes |  | $ | 189,956 |  |  | $ | 202,891 |  |  | $ | 203,052 |  |  | $ | 211,788 |
Automotive asset-backed notes |  | $ | 945,614 |  |  | $ | 952,042 |  |  | $ | 1,172,160 |  |  | $ | 1,179,910 |

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- Definition Tabular disclosure of information pertaining to carrying amount and estimated fair value of short-term and long-term debt instruments or arrangements, including but not limited to, identification of terms, features, and collateral requirements. + References No definition available. + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19190-110258 + Details
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- Definition Tabular disclosure of interest rate derivatives, including, but not limited to, the fair value of the derivatives, statement of financial position location, and statement of financial performance location of these instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 + Details
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