Consolidated Statement of Changes in Partner Capital Statement - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net income (loss)	$ 81,625	$ (24,783)
Other comprehensive (loss) income
Amounts reclassified from accumulated other comprehensive loss	1,035	1,425
Contributions from partners		100
Issuance of exchangeable operating partnership units		1,275
Distributions to partners	(785)	(1,164)
Restricted units issued as a result of restricted stock issued by Parent Company, net of amortization	2,479	3,764
Partners Capital Total [Member]
Net income (loss)	80,656	(25,332)
Other comprehensive (loss) income
Amounts reclassified from accumulated other comprehensive loss	951	1,404
Restricted units issued as a result of restricted stock issued by Parent Company, net of amortization	2,479	3,764
Partnership Interest [Member]
Beginning Balance	6,058,147	6,289,961
Net income (loss)	81,625	(24,783)
Other comprehensive (loss) income
Other comprehensive (loss) income before reclassification	5,525	(16,064)
Amounts reclassified from accumulated other comprehensive loss	1,035	1,425
Contributions from partners		100
Issuance of exchangeable operating partnership units		1,275
Distributions to partners	(102,284)	(101,407)
Restricted units issued as a result of restricted stock issued by Parent Company, net of amortization	2,479	3,764
Common units issued as a result of common stock issued by Parent Company, net of issuance costs		125,773
Common units repurchased as a result of common stock repurchased by Parent Company, net of issuances	(3,483)	(4,809)
Ending Balance	6,043,044	6,275,235
Partnership Interest [Member] | Partners Capital Total [Member]
Beginning Balance	6,020,639	6,249,448
Net income (loss)	81,020	(25,447)
Other comprehensive (loss) income
Other comprehensive (loss) income before reclassification	5,187	(15,005)
Amounts reclassified from accumulated other comprehensive loss	955	1,410
Issuance of exchangeable operating partnership units		1,275
Distributions to partners	(101,499)	(100,243)
Restricted units issued as a result of restricted stock issued by Parent Company, net of amortization	2,479	3,764
Common units issued as a result of common stock issued by Parent Company, net of issuance costs		125,773
Common units repurchased as a result of common stock repurchased by Parent Company, net of issuances	(3,483)	(4,809)
Ending Balance	6,005,298	6,236,166
Partnership Interest [Member] | AOCI Attributable to Parent [Member]
Beginning Balance	(18,625)	(11,997)
Other comprehensive (loss) income
Other comprehensive (loss) income before reclassification	5,162	(14,938)
Amounts reclassified from accumulated other comprehensive loss	951	1,404
Ending Balance	(12,512)	(25,531)
Partnership Interest [Member] | Noncontrolling Interest [Member]
Beginning Balance	37,508	40,513
Net income (loss)	605	664
Other comprehensive (loss) income
Other comprehensive (loss) income before reclassification	338	(1,059)
Amounts reclassified from accumulated other comprehensive loss	80	15
Contributions from partners		100
Distributions to partners	(785)	(1,164)
Ending Balance	37,746	39,069
Partnership Interest [Member] | General Partner [Member]
Beginning Balance	6,003,537	6,225,345
Net income (loss)	80,656	(25,332)
Other comprehensive (loss) income
Distributions to partners	(101,046)	(99,788)
Restricted units issued as a result of restricted stock issued by Parent Company, net of amortization	2,479	3,764
Common units issued as a result of common stock issued by Parent Company, net of issuance costs		125,773
Common units repurchased as a result of common stock repurchased by Parent Company, net of issuances	(3,483)	(4,809)
Ending Balance	5,982,143	6,224,953
Partnership Interest [Member] | Limited Partner [Member]
Beginning Balance	35,727	36,100
Net income (loss)	364	(115)
Other comprehensive (loss) income
Other comprehensive (loss) income before reclassification	25	(67)
Amounts reclassified from accumulated other comprehensive loss	4	6
Issuance of exchangeable operating partnership units		1,275
Distributions to partners	(453)	(455)
Ending Balance	$ 35,667	$ 36,744