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v3.6.0.2

Debt (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2011 USD ($) $ / shares shares | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
Debt Instrument [Line Items] |  |  |  |
Debt |  | $ 6,045,167,000 | $ 6,122,413,000 |
Long-term debt |  | 5,829,912,000 | 5,886,809,000 |
Less current portion |  | 215,255,000 | 235,604,000 |
Weighted average interest rate |  |  |  | 5.50%
Unamortized debt discount |  | (25,538,000) |  |
Coupon interest |  | 174,027,000 | 173,484,000 | $ 128,002,000
Extinguishment of Debt, Amount |  |  |  | 275,900,000
Long-term debt maturity [Abstract] |  |  |  |
2016 |  | 570,353,000 |  |
2017 |  | 1,509,499,000 |  |
2018 |  | 391,708,000 |  |
2019 |  | 674,125,000 |  |
2020 |  | 519,208,000 |  |
Thereafter |  | 4,487,860,000 |  |
Total obligations |  | 8,152,753,000 |  |
Unamortized debt discount |  | (25,538,000) |  |
Less amount representing interest |  | (2,082,048,000) |  |
Total |  | 6,045,167,000 | 6,122,413,000 |
Long-term debt, less current portion |  | 3,413,998,000 | 3,459,371,000 |
Mortgages Payable [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt |  | $ 3,184,229,000 | $ 3,246,513,000 |
Maturity date, start |  | Jun. 01, 2017 |  |
Maturity date, end |  | Dec. 31, 2047 |  |
Weighted average interest rate |  | 4.50% | 4.51% |
Unamortized debt premium |  | $ (4,500,000) | $ 3,300,000 |
Long-term debt maturity [Abstract] |  |  |  |
Total |  | 3,184,229,000 | 3,246,513,000 |
Capital and Financing Lease Obligations [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt |  | $ 2,485,520,000 | $ 2,489,588,000 |
Maturity date |  | Dec. 31, 2032 |  |
Weighted average interest rate |  | 8.08% | 8.11% |
Unamortized debt discount |  | $ 0 |  |
Long-term debt maturity [Abstract] |  |  |  |
2016 |  | 416,239,000 |  |
2017 |  | 277,829,000 |  |
2018 |  | 256,539,000 |  |
2019 |  | 200,308,000 |  |
2020 |  | 186,342,000 |  |
Thereafter |  | 3,230,311,000 |  |
Total obligations |  | 4,567,568,000 |  |
Unamortized debt discount |  | 0 |  |
Less amount representing interest |  | (2,082,048,000) |  |
Total |  | 2,485,520,000 | $ 2,489,588,000 |
Convertible Debt [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt |  | $ 295,397,000 | $ 281,902,000 |
Maturity date |  | Jun. 15, 2018 |  |
Weighted average interest rate | 2.75% | 2.75% | 2.75% |
Unamortized debt discount |  | $ 20,900,000 | $ 34,300,000 |
Principal | $ 316,300,000 | 316,300,000 |  |
Proceeds from debt financing | $ 308,200,000 |  |  |
Initial conversion rate (in shares per $1,000 of principal) | 34.1006 |  |  |
Equivalent initial conversion price (in dollars per share) | $ / shares | $ 29.325 |  |  |
Conversion terms | The Notes are convertible at an initial conversion rate of 34.1006 shares of Company common stock per $1,000 principal amount of Notes (equivalent to an initial conversion price of approximately $29.325 per share), subject to adjustment. Holders may convert their Notes at their option prior to the close of business on the second trading day immediately preceding the stated maturity date only under the following circumstances: (i) during any fiscal quarter commencing after the fiscal quarter ending September 30, 2011, if the last reported sale price of the Company's common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on the last trading day of the preceding fiscal quarter is greater than or equal to 130% of the applicable conversion price on each applicable trading day; (ii) during the five business day period after any five consecutive trading day period (the "measurement period"), in which the trading price per $1,000 principal amount of notes for each trading day of that measurement period was less than 98% of the product of the last reported sale price of the Company's common stock and the applicable conversion rate on each such day; or (iii) upon the occurrence of specified corporate events. On and after March 15, 2018, until the close of business on the second scheduled trading day immediately preceding the maturity date, holders may convert their Notes at any time, regardless of the foregoing circumstances. Unconverted Notes mature at par in June 2018. |  |  |
Imputed interest rate | 7.50% |  |  |
Expected life of convertible debt | 7 years |  |  |
Coupon interest |  | 8,697,000 | 8,697,000 | 8,697,000
Amortization of discount |  | 12,625,000 | 11,732,000 | 10,902,000
Interest expense related to convertible notes |  | 21,322,000 | 20,429,000 | $ 19,599,000
Number of shares of common stock covered by hedging transactions (in shares) | shares | 10,784,315 |  |  |
Number of warrants to acquire common stock sold to Hedge Counterparties (in shares) | shares | 10,784,315 |  |  |
Strike price of warrants (in dollars per share) | $ / shares | $ 40.25 |  |  |
Net cost of hedging transaction | $ 31,900,000 |  |  |
Conversion rate per value of notes |  | $ 1,000 |  |
Number of trading days for pricing |  | 20 days |  |
Number of consecutive trading days |  | 30 days |  |
Percentage minimum of applicable conversion price (in hundredths) |  | 130.00% |  |
Number of consecutive trading days less than 98% of test period |  | 5 days |  |
Applicable percentage rate for five day consecutive trading days (in hundredths) |  | 98.00% |  |
Long-term debt maturity [Abstract] |  |  |  |
Unamortized debt discount |  | $ 20,900,000 | 34,300,000 |
Total |  | 295,397,000 | 281,902,000 |
Construction Financing [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt |  | $ 3,644,000 | $ 24,105,000 |
Maturity date, start |  | Dec. 31, 2017 |  |
Maturity date, end |  | Dec. 31, 2032 |  |
Weighted average interest rate |  | 8.00% | 4.84% |
Long-term debt maturity [Abstract] |  |  |  |
Total |  | $ 3,644,000 | $ 24,105,000 |
Other Notes Payable [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt |  | $ 76,377,000 | $ 80,305,000 |
Maturity date, start |  | Jun. 30, 2017 |  |
Maturity date, end |  | Feb. 01, 2020 |  |
Weighted average interest rate |  | 5.33% | 5.16% |
Long-term debt maturity [Abstract] |  |  |  |
Total |  | $ 76,377,000 | $ 80,305,000 |
Long-term Debt [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt |  | 3,559,647,000 |  |
Unamortized debt discount |  | (25,538,000) |  |
Long-term debt maturity [Abstract] |  |  |  |
2016 |  | 154,114,000 |  |
2017 |  | 1,231,670,000 |  |
2018 |  | 135,169,000 |  |
2019 |  | 473,817,000 |  |
2020 |  | 332,866,000 |  |
Thereafter |  | 1,257,549,000 |  |
Total obligations |  | 3,585,185,000 |  |
Unamortized debt discount |  | (25,538,000) |  |
Less amount representing interest |  | 0 |  |
Total |  | 3,559,647,000 |  |
Assets held for sale [Member] |  |  |  |
Long-term debt maturity [Abstract] |  |  |  |
Long-term debt, less current portion |  | $ 60,500,000 | $ 60,800,000 |

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