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v3.7.0.1

Fair Value (Details) | 3 Months Ended
--- | ---
Mar. 31, 2017 USD ($) derivative venture | Mar. 31, 2016 USD ($)
Derivative instruments and Hedging Activities |  |
(Loss) income on cash flow hedges | $ 145,000 | $ (47,757,000)
Estimated hedging losses to be reclassified from accumulated other comprehensive loss into earnings within the next twelve months | $ 6,975,000 |
Cash Flow Hedges |  |
Derivative instruments and Hedging Activities |  |
Number of derivative instruments held | derivative | 13 |
Interest Rate Cap [Member] | Cash Flow Hedges |  |
Derivative instruments and Hedging Activities |  |
Notional amount | $ 35,685,000 |
Weighted average interest rate (as a percent) | 2.80% |
Weighted average capped interest rate (as a percent) | 5.90% |
Interest Rate Swap [Member] | Cash Flow Hedges |  |
Derivative instruments and Hedging Activities |  |
Notional amount | $ 900,000,000 |
Weighted average capped interest rate (as a percent) | 2.30% |
Notional amounts entered into during period | $ 100,000,000 |
Put Option [Member] |  |
Derivative instruments and Hedging Activities |  |
Number of Ventures in which Entity is Required to Purchase Interest in Investment at Guaranteed Minimum Amount | venture | 3 |
Not Designated as Hedging Instrument [Member] |  |
Derivative instruments and Hedging Activities |  |
Number of derivative instruments held | derivative | 14 |
Not Designated as Hedging Instrument [Member] | Interest Rate Cap [Member] |  |
Derivative instruments and Hedging Activities |  |
Notional amount | $ 696,591,000 |
Weighted average interest rate (as a percent) | 2.60% |
Weighted average capped interest rate (as a percent) | 6.10% |

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