Debt (Summary of Debt) (Details) - USD ($) $ in Thousands |
Dec. 31, 2019 |
Dec. 31, 2018 |
|---|---|---|
| Debt Instrument [Line Items] | ||
| Outstanding principal | $ 3,071,982 | |
| Carrying value | 3,071,982 | |
| Deferred financing costs | (8,491) | $ (2,267) |
| Total debt | 3,266,218 | 2,886,034 |
| Debt classified as current, net of deferred financing costs | (3,008) | (900,759) |
| Total long-term debt | 3,263,210 | 1,985,275 |
| Margin Loan Facility | ||
| Debt Instrument [Line Items] | ||
| Outstanding principal | 1,300,000 | |
| Carrying value | 1,300,000 | 900,000 |
| Exchangeable senior debentures | ||
| Debt Instrument [Line Items] | ||
| Outstanding principal | 477,250 | |
| Carrying value | 658,839 | 462,336 |
| Senior notes | ||
| Debt Instrument [Line Items] | ||
| Outstanding principal | 775,000 | |
| Carrying value | 796,138 | 803,287 |
| Senior credit facility | ||
| Debt Instrument [Line Items] | ||
| Outstanding principal | 512,666 | |
| Carrying value | 512,666 | 715,124 |
| Wells Fargo note payable | ||
| Debt Instrument [Line Items] | ||
| Outstanding principal | 7,066 | |
| Carrying value | $ 7,066 | $ 7,554 |
| X | ||||||||||
- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Face (par) amount of debt instrument at time of issuance. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Definition Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|