Supplemental Cash Flow Disclosures (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019	Jun. 30, 2018
Supplemental disclosures:
Cash paid for interest		$ 147,317	$ 59,136
Cash paid for income taxes		3,962	4,919
Non-cash investing and financing activities:
Accrued capital expenditures, tenant improvements and real estate developments		8,551	4,490
Accrued deferred financing costs		0	98
Real estate contributions to Industrial Partnership		29,577	0
Distributions declared and unpaid		143,306	142,494
Distributions payable relinquished	$ 6,429	6,429	0
Mortgage note payable relieved by foreclosure or a deed-in-lieu of foreclosure		0	16,200
Exchange of real estate investments		$ 8,900	$ 0