CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities:
Net earnings		$ 129,608,000	$ 111,441,000
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization		100,855,000	98,124,000
Impairment losses – real estate, net of recoveries		9,866,000	27,367,000
Loss on early extinguishment of debt		21,328,000	16,679,000
Amortization of notes payable discount		1,350,000	2,275,000
Amortization of debt costs		2,882,000	2,842,000
Amortization of mortgages payable premium		(43,000)	(43,000)
Amortization of interest rate hedges		1,929,000	1,021,000
Settlement of forward starting swaps		0	(13,141,000)
Gain on disposition of real estate		(8,462,000)	(13,489,000)
Performance incentive plan expense		8,717,000	6,275,000
Performance incentive plan payment		(721,000)	(846,000)
Change in operating assets and liabilities, net of assets acquired and liabilities assumed:
Decrease (increase) in receivables		725,000	(15,771,000)
Decrease (increase) in accrued rental income		15,692,000	(31,045,000)
Decrease (increase) in other assets		124,000	(204,000)
Increase in accrued interest payable		2,415,000	3,402,000
Decrease in other liabilities		(5,204,000)	(7,356,000)
Other		(305,000)	186,000
Net cash provided by operating activities		280,756,000	187,717,000
Cash flows from investing activities:
Proceeds from the disposition of real estate		41,264,000	37,257,000
Additions to real estate:
Accounted for using the operating method		(207,789,000)	(78,880,000)
Principal payments received on mortgages and notes receivable		288,000	194,000
Other		(1,001,000)	(43,000)
Net cash used in investing activities		(167,238,000)	(41,472,000)
Cash flows from financing activities:
Proceeds from line of credit payable		0	311,000,000
Repayment of line of credit payable		0	(444,600,000)
Repayment of mortgages payable		(312,000)	(294,000)
Proceeds from notes payable		441,594,000	692,646,000
Repayment of notes payable		(350,000,000)	(325,000,000)
Payment for early extinguishment of debt		(21,328,000)	(16,679,000)
Payment of debt issuance costs		(12,743,000)	(7,809,000)
Proceeds from issuance of common stock		2,606,000	54,084,000
Stock issuance costs		(224,000)	(757,000)
Payment of common stock dividends		(181,819,000)	(176,418,000)
Net cash provided by (used in) financing activities		(131,196,000)	77,203,000
Net increase (decrease) in cash, cash equivalents and restricted cash		(17,678,000)	223,448,000
Cash, cash equivalents and restricted cash at beginning of period	[1]	267,236,000	1,112,000
Cash, cash equivalents and restricted cash at end of period	[1]	249,558,000	224,560,000
Supplemental disclosure of cash flow information:
Interest paid, net of amount capitalized		59,266,000	56,811,000
Supplemental disclosure of noncash investing and financing activities:
Change in other comprehensive income (loss)		1,929,000	(6,596,000)
Work in progress accrual balance		6,376,000	16,789,000
Mortgage receivable issued in connection with real estate disposition		0	3,000,000
Restricted cash and cash held in escrow		0	0
Series F Preferred Stock
Cash flows from financing activities:
Payment of Series F preferred stock dividends		$ (8,970,000)	$ (8,970,000)

[1] Cash, cash equivalents and restricted cash is the aggregate of cash and cash equivalents and restricted cash and cash held in escrow from the Condensed Consolidated Balance Sheets. NNN had no restricted cash and cash held in escrow at June 30, 2021 and 2020.