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	129,608,000		129,610,000						129,610,000			(2,000)
Dividends declared and paid:
Preferred stock dividends declared and paid		$ (8,970,000)		$ (8,970,000)						$ (8,970,000)
Common stock dividends declared and paid	(180,612,000)		(180,612,000)					1,207,000	(181,819,000)
Issuance of common stock:
Director compensation	534,000		534,000					534,000
Stock purchase plan	165,000		165,000					165,000
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	(202,000)		(202,000)					(202,000)
Amortization of deferred compensation	7,888,000		7,888,000					7,888,000
Amortization of interest rate hedges	1,929,000		1,929,000								1,929,000
Balances at Jun. 30, 2021	4,270,878,000		4,270,876,000			345,000,000	1,757,000	4,644,593,000	(705,958,000)		(14,516,000)	2,000
Balances at Mar. 31, 2021	4,287,839,000		4,287,835,000		$ 1,757,000	345,000,000		4,639,680,000	(683,525,000)		(15,077,000)	4,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	73,021,000		73,023,000						73,023,000			(2,000)
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	(90,342,000)		(90,342,000)					629,000	(90,971,000)
Issuance of common stock:
Director compensation	267,000		267,000					267,000
Stock purchase plan	95,000		95,000					95,000
Stock issuance costs	(46,000)		(46,000)					(46,000)
Amortization of deferred compensation	3,968,000		3,968,000					3,968,000
Amortization of interest rate hedges	561,000		561,000								561,000
Balances at Jun. 30, 2021	4,270,878,000		4,270,876,000			$ 345,000,000	1,757,000	4,644,593,000	(705,958,000)		(14,516,000)	2,000
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	155,538,000		155,543,000						155,543,000			(5,000)
Dividends declared and paid:
Common stock dividends declared and paid	(184,286,000)		(184,286,000)					1,343,000	(185,629,000)
Issuance of common stock:
Director compensation	609,000		609,000					609,000
Stock purchase plan	112,000		112,000					112,000
ATM equity program	31,593,000		31,593,000				7,000	31,586,000
Restricted shares, net of forfeitures							3,000	(3,000)
Stock issuance costs	(575,000)		(575,000)					(575,000)
Amortization of deferred compensation	9,975,000		9,975,000					9,975,000
Amortization of interest rate hedges	1,175,000		1,175,000								1,175,000
Distributions to noncontrolling interests	(278,000)											(278,000)
Other			(282,000)					(282,000)				282,000
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)
Balances at Mar. 31, 2022	3,897,746,000		3,897,744,000				1,759,000	4,669,590,000	(759,232,000)		(14,373,000)	2,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	74,165,000		74,171,000						74,171,000			(6,000)
Dividends declared and paid:
Common stock dividends declared and paid	(92,231,000)		(92,231,000)					647,000	(92,878,000)
Issuance of common stock:
Director compensation	304,000		304,000					304,000
Stock purchase plan	60,000		60,000					60,000
ATM equity program	31,593,000		31,593,000				7,000	31,586,000
Restricted shares, net of forfeitures							1,000	(1,000)
Stock issuance costs	(510,000)		(510,000)					(510,000)
Amortization of deferred compensation	4,085,000		4,085,000					4,085,000
Amortization of interest rate hedges	592,000		592,000								592,000
Distributions to noncontrolling interests	(278,000)											(278,000)
Other			(282,000)					(282,000)				$ 282,000
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)