Debt - Narrative (Details) - USD ($)		3 Months Ended			6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Jun. 29, 2020	Dec. 31, 2019
Line of Credit Facility [Line Items]
LIBOR floor	0.25%	0.25%			0.25%		0.00%
Dividend (in usd per share)		$ 0.01	$ 0.01		$ 0.01
Capital improvements limit					$ 90,000,000.0
Repayments under revolving credit facility	$ 253,200,000				535,115,000	$ 226,893,000
Letters of credit outstanding	6,800,000	$ 6,800,000			6,800,000			$ 2,800,000
Estimated fair value of debt	106,900,000	106,900,000			106,900,000			101,200,000
Unrealized gain (loss) on derivative instruments		(405,000)		$ (21,089,000)	(54,670,000)	(30,128,000)
AOCI Attributable to Parent [Member]
Line of Credit Facility [Line Items]
Unrealized gain (loss) on derivative instruments		(405,000)		(21,089,000)	(54,670,000)	(30,128,000)
Interest rate swaps
Line of Credit Facility [Line Items]
Derivative instruments, liability position, fair value	74,500,000	74,500,000			74,500,000
Expected reclassifications in next 12 months	30,300,000	30,300,000			30,300,000
Interest rate swaps | Interest expense
Line of Credit Facility [Line Items]
Reclassification of gain (loss) from AOCI to interest expense		6,200,000		$ (2,300,000)	8,000,000.0	$ (4,800,000)
Letters of credit
Line of Credit Facility [Line Items]
Maximum borrowing capacity	30,000,000.0	30,000,000.0			30,000,000.0
Unsecured debt | Unsecured term loans
Line of Credit Facility [Line Items]
Debt outstanding	1,975,000,000	1,975,000,000			1,975,000,000			1,975,000,000
Borrowings, fixed interest rate	1,600,000,000	1,600,000,000			1,600,000,000			1,600,000,000
Unsecured debt | Revolving credit facilities
Line of Credit Facility [Line Items]
Debt outstanding	390,000,000	390,000,000			390,000,000			165,000,000
Unsecured debt | Senior unsecured credit facility | Revolving credit facilities
Line of Credit Facility [Line Items]
Debt outstanding	390,000,000.0	390,000,000.0			390,000,000.0			165,000,000
Maximum borrowing capacity	650,000,000.0	650,000,000.0			650,000,000.0
Remaining borrowing capacity	253,200,000	253,200,000			253,200,000
Maximum borrowing capacity potential increase (up to)	1,300,000,000	1,300,000,000			$ 1,300,000,000
Unsecured debt | Senior unsecured credit facility | Revolving credit facilities | Minimum
Line of Credit Facility [Line Items]
Unused commitment fee annual rate					0.20%
Unsecured debt | Senior unsecured credit facility | Revolving credit facilities | Minimum | LIBOR
Line of Credit Facility [Line Items]
Credit facility borrowings LIBOR rate plus					1.45%
Unsecured debt | Senior unsecured credit facility | Revolving credit facilities | Maximum
Line of Credit Facility [Line Items]
Unused commitment fee annual rate					0.30%
Unsecured debt | Senior unsecured credit facility | Revolving credit facilities | Maximum | LIBOR
Line of Credit Facility [Line Items]
Credit facility borrowings LIBOR rate plus					2.25%
Unsecured debt | PHL unsecured credit facility | Revolving credit facilities
Line of Credit Facility [Line Items]
Debt outstanding	0	0			$ 0			0
Maximum borrowing capacity	25,000,000.0	25,000,000.0			25,000,000.0
Remaining borrowing capacity	25,000,000.0	25,000,000.0			$ 25,000,000.0
Unsecured debt | PHL unsecured credit facility | Revolving credit facilities | Minimum | LIBOR
Line of Credit Facility [Line Items]
Credit facility borrowings LIBOR rate plus					1.45%
Unsecured debt | PHL unsecured credit facility | Revolving credit facilities | Maximum | LIBOR
Line of Credit Facility [Line Items]
Credit facility borrowings LIBOR rate plus					2.25%
Unsecured debt | Sixth Term Loan, $300 Million Tranche | Unsecured term loans
Line of Credit Facility [Line Items]
Debt outstanding	300,000,000.0	300,000,000.0			$ 300,000,000.0
Senior unsecured notes
Line of Credit Facility [Line Items]
Debt outstanding	100,000,000	100,000,000			100,000,000			100,000,000
Senior unsecured notes | Series A Notes
Line of Credit Facility [Line Items]
Debt outstanding	$ 60,000,000	$ 60,000,000			$ 60,000,000			60,000,000
Stated interest rate	4.70%	4.70%			4.70%
Senior unsecured notes | Series B Notes
Line of Credit Facility [Line Items]
Debt outstanding	$ 40,000,000.0	$ 40,000,000.0			$ 40,000,000.0			40,000,000
Stated interest rate	4.93%	4.93%			4.93%
Cash flow hedging | Designated as hedging instrument | Interest rate swap, not yet effective
Line of Credit Facility [Line Items]
Notional value	$ 290,000,000.0	$ 290,000,000.0			$ 290,000,000.0			590,000,000.0
Cash flow hedging | Designated as hedging instrument | Interest rate swaps
Line of Credit Facility [Line Items]
Notional value	$ 1,630,000,000	$ 1,630,000,000			$ 1,630,000,000			$ 1,630,000,000