CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($)	Total	Series F Preferred Stock	Total  Stockholders’ Equity of NNN	Total  Stockholders’ Equity of NNN Series F Preferred Stock	Preferred Stock	Preferred Stock Series F Preferred Stock	Common Stock	Capital in Excess of Par Value	Accumulated Deficit	Accumulated Deficit Series F Preferred Stock	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests
Balances at Dec. 31, 2020	$ 4,319,304,000		$ 4,319,300,000			$ 345,000,000	$ 1,753,000	$ 4,633,771,000	$ (644,779,000)		$ (16,445,000)	$ 4,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	212,540,000		212,543,000						212,543,000			(3,000)
Dividends declared and paid:
Preferred stock dividends declared and paid		$ (13,455,000)		$ (13,455,000)						$ (13,455,000)
Common stock dividends declared and paid	(272,709,000)		(272,709,000)					1,841,000	(274,550,000)
Issuance of common stock:
Director compensation	840,000		840,000					840,000
Stock purchase plan	251,000		251,000					251,000
ATM equity program	1,234,000		1,234,000				1,000	1,233,000
Restricted shares, net of forfeitures							3,000	(3,000)
Stock issuance costs	(253,000)		(253,000)					(253,000)
Amortization of deferred compensation	11,481,000		11,481,000					11,481,000
Amortization of interest rate hedges	2,494,000		2,494,000								2,494,000
Fair value of forward starting swaps	(1,584,000)		(1,584,000)								(1,584,000)
Balances at Sep. 30, 2021	4,260,143,000		4,260,142,000			345,000,000	1,757,000	4,649,161,000	(720,241,000)		(15,535,000)	1,000
Balances at Jun. 30, 2021	4,270,878,000		4,270,876,000		$ 1,757,000	345,000,000		4,644,593,000	(705,958,000)		(14,516,000)	2,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	82,932,000		82,933,000						82,933,000			(1,000)
Dividends declared and paid:
Preferred stock dividends declared and paid	(4,485,000)		(4,485,000)						(4,485,000)
Common stock dividends declared and paid	(92,097,000)		(92,097,000)					634,000	(92,731,000)
Issuance of common stock:
Director compensation	306,000		306,000					306,000
Stock purchase plan	86,000		86,000					86,000
Stock issuance costs	(51,000)		(51,000)					(51,000)
Amortization of deferred compensation	3,593,000		3,593,000					3,593,000
Amortization of interest rate hedges	565,000		565,000								565,000
Fair value of forward starting swaps	(1,584,000)		(1,584,000)								(1,584,000)
Balances at Sep. 30, 2021	4,260,143,000		4,260,142,000			$ 345,000,000	1,757,000	4,649,161,000	(720,241,000)		(15,535,000)	1,000
Balances at Dec. 31, 2021	3,901,663,000		3,901,662,000				1,757,000	4,662,714,000	(747,853,000)		(14,956,000)	1,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	243,959,000		243,964,000						243,964,000			(5,000)
Dividends declared and paid:
Common stock dividends declared and paid	(280,579,000)		(280,579,000)					2,058,000	(282,637,000)
Issuance of common stock:
Director compensation	927,000		927,000					927,000
Stock purchase plan	200,000		200,000					200,000
ATM equity program	129,149,000		129,149,000				28,000	129,121,000
Restricted shares, net of forfeitures							3,000	(3,000)
Stock issuance costs	(1,879,000)		(1,879,000)					(1,879,000)
Amortization of deferred compensation	12,000,000		12,000,000					12,000,000
Amortization of interest rate hedges	1,770,000		1,770,000								1,770,000
Distributions to noncontrolling interests	(278,000)											(278,000)
Other			(282,000)					(282,000)				$ 282,000
Balances at Sep. 30, 2022	4,006,932,000		4,006,932,000				1,788,000	4,804,856,000	(786,526,000)		(13,186,000)
Balances at Jun. 30, 2022	3,915,526,000		3,915,526,000				1,767,000	4,705,479,000	(777,939,000)		(13,781,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	88,421,000		88,421,000						88,421,000
Dividends declared and paid:
Common stock dividends declared and paid	(96,293,000)		(96,293,000)					715,000	(97,008,000)
Issuance of common stock:
Director compensation	318,000		318,000					318,000
Stock purchase plan	88,000		88,000					88,000
ATM equity program	97,556,000		97,556,000				21,000	97,535,000
Stock issuance costs	(1,304,000)		(1,304,000)					(1,304,000)
Amortization of deferred compensation	2,025,000		2,025,000					2,025,000
Amortization of interest rate hedges	595,000		595,000								595,000
Balances at Sep. 30, 2022	$ 4,006,932,000		$ 4,006,932,000				$ 1,788,000	$ 4,804,856,000	$ (786,526,000)		$ (13,186,000)