CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net earnings		$ 111,441,000	$ 159,124,000
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization		98,124,000	92,421,000
Impairment losses – real estate, net of recoveries		27,367,000	10,432,000
Loss on early extinguishment of debt		16,679,000	0
Amortization of notes payable discount		2,275,000	859,000
Amortization of debt costs		2,842,000	1,851,000
Amortization of mortgages payable premium		(43,000)	(43,000)
Amortization of interest rate hedges		1,021,000	648,000
Settlement of forward starting swaps		(13,141,000)	0
Gain on disposition of real estate		(13,489,000)	(23,447,000)
Performance incentive plan expense		6,275,000	5,580,000
Performance incentive plan payment		(846,000)	(775,000)
Change in operating assets and liabilities, net of assets acquired and liabilities assumed:
Decrease in real estate leased to others using the direct financing method		83,000	338,000
Decrease (increase) in receivables		(15,771,000)	1,290,000
Increase in accrued rental income		(31,045,000)	(1,160,000)
Increase in other assets		(204,000)	(1,227,000)
Increase (decrease) in accrued interest payable		3,402,000	(1,535,000)
Decrease in other liabilities		(7,356,000)	(8,847,000)
Other		103,000	(168,000)
Net cash provided by operating activities		187,717,000	235,341,000
Cash flows from investing activities:
Proceeds from the disposition of real estate		37,257,000	59,026,000
Additions to real estate:
Accounted for using the operating method		(78,880,000)	(378,713,000)
Principal payments received on mortgages and notes receivable		194,000	0
Other		(43,000)	1,851,000
Net cash used in investing activities		(41,472,000)	(317,836,000)
Cash flows from financing activities:
Proceeds from line of credit payable		311,000,000	202,000,000
Repayment of line of credit payable		(444,600,000)	(138,800,000)
Repayment of mortgages payable		(294,000)	(281,000)
Proceeds from notes payable		692,646,000	0
Repayment of notes payable		(325,000,000)	0
Payment for early extinguishment of debt		(16,679,000)	0
Payment of debt issuance costs		(7,809,000)	(115,000)
Proceeds from issuance of common stock		54,084,000	87,978,000
Stock issuance costs		(757,000)	(766,000)
Payment of common stock dividends		(176,418,000)	(161,639,000)
Noncontrolling interest distributions		0	(776,000)
Net cash provided by (used in) financing activities		77,203,000	(29,563,000)
Net increase (decrease) in cash, cash equivalents and restricted cash		223,448,000	(112,058,000)
Cash, cash equivalents and restricted cash at beginning of period	[1]	1,112,000	114,267,000
Cash, cash equivalents and restricted cash at end of period	[1]	224,560,000	2,209,000
Supplemental disclosure of cash flow information:
Interest paid, net of amount capitalized		56,811,000	58,459,000
Supplemental disclosure of noncash investing and financing activities:
Decrease in other comprehensive income		6,596,000	4,487,000
Right-of-use assets recorded in connection with lease liabilities		0	8,224,000
Work in progress accrual balance		16,789,000	30,060,000
Mortgage receivable issued in connection with real estate transactions		3,000,000	3,100,000
General and administrative		0	0
Series E Preferred Stock
Cash flows from financing activities:
Payment of preferred stock dividends		0	(8,194,000)
Series F Preferred Stock
Cash flows from financing activities:
Payment of 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, 2020 and 2019.