Derivatives and Hedging Activities	3 Months Ended
Derivatives and Hedging Activities	Mar. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	Derivatives and Hedging Activities The Company may use derivative financial instruments, including interest rate swaps, caps, options, floors and other interest rate derivative contracts, to hedge all or a portion of the interest rate risk associated with its borrowings. The Company does not intend to utilize derivatives for purposes other than interest rate risk management. The use of derivative financial instruments carries certain risks, including the risk that the counterparties to these contractual arrangements are not able to perform under the agreements. To mitigate this risk, the Company only enters into derivative financial instruments with counterparties with high credit ratings and with major financial institutions with which the Company may also have other financial relationships. The Company does not anticipate that any of the counterparties will fail to meet their obligations. The Company records all derivatives on the consolidated balance sheets at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether the Company has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. Derivatives designated and qualifying as a hedge of the exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk, such as interest rate risk, are considered fair value hedges. Derivatives designated and qualifying as a hedge of the exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. The accounting for subsequent changes in the fair value of these derivatives depends on whether each has been designated and qualifies for hedge accounting treatment. If the Company elects not to apply hedge accounting treatment, any changes in the fair value of these derivative instruments is recognized immediately in loss on derivative instruments, net in the consolidated statements of operations and consolidated statements of comprehensive income (loss). If the derivative is designated and qualifies for hedge accounting treatment, the change in fair value of the derivative is recorded in other comprehensive income (loss). Unrealized gains and losses in other comprehensive income (loss) are reclassified to interest expense when the related hedged items impact earnings. Cash Flow Hedges of Interest Rate Risk On January 24, 2019, the Company entered into interest rate swap agreements with an aggregate $900.0 million notional amount, effective on February 6, 2019 and maturing on January 31, 2023, which were designated as cash flow hedges. Based on the General Partner’s then credit rating and interest rate of LIBOR + 1.35%, the swap agreements effectively fixed the Credit Facility Term Loan interest rate at approximately 3.84%. As of March 31, 2019, these interest rate swaps were in a liability position with a fair value of $11.3 million, which is included in deferred rent and other liabilities in the accompanying consolidated balance sheets. As of December 31, 2018, the Company had no interest rate derivatives that were designated as cash flow hedges of interest rate risk. During each of the three months ended March 31, 2019 and 2018, the Company reclassified previously unrealized losses of $0.1 million from accumulated other comprehensive income into interest expense as a result of the hedged transactions impacting earnings. During the three months ended March 31, 2019, the Company recorded unrealized losses of $11.3 million for changes in the fair value of the cash flow hedges in accumulated other comprehensive income. During the next twelve months, the Company estimates that an additional $1.3 million will be reclassified from other comprehensive income as an increase to interest expense. Derivatives Not Designated as Hedging Instruments As of each of March 31, 2019 and December 31, 2018, the Company had one interest rate swap that was not designated as a qualifying hedging relationship with a $50.5 million and $50.7 million notional amount, respectively. As of March 31, 2019 and December 31, 2018, this interest rate swap was in an asset position with an estimated fair value of $0.4 million and $0.5 million, respectively, which is included in rent and tenant receivables and other assets, net in the accompanying consolidated balance sheets. A loss of less than $0.1 million for the three months ended March 31, 2019 and a gain of $0.3 million for the three months ended March 31, 2018, related to the change in the fair value of derivatives not designated as hedging instruments were recorded in (loss) gain on derivative instruments, net in the accompanying consolidated statements of operations.