Condensed Consolidated Statements Of Equity (Unaudited) - USD ($)	Total	Total  Stockholders’ Equity of NNN	Common Stock	Capital in Excess of Par Value	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests
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)	0
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:
Preferred stock dividends declared and paid	0	0			0
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	0	0	0
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)	$ 0
Balances at Dec. 31, 2022	4,123,502,000	4,123,502,000	1,815,000	4,928,034,000	(793,765,000)	(12,582,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	188,871,000	188,871,000			188,871,000
Dividends declared and paid:
Common stock dividends declared and paid	(197,691,000)	(197,691,000)		1,455,000	(199,146,000)
Issuance of common stock:
Director compensation	539,000	539,000		539,000
Stock purchase plan	160,000	160,000		160,000
ATM equity program	29,150,000	29,150,000	7,000	29,143,000
Restricted shares, net of forfeitures			3,000	(3,000)
Stock issuance costs	(558,000)	(558,000)		(558,000)
Amortization of deferred compensation	5,038,000	5,038,000		5,038,000
Amortization of interest rate hedges	1,223,000	1,223,000				1,223,000
Balances at Jun. 30, 2023	4,150,234,000	4,150,234,000	1,825,000	4,963,808,000	(804,040,000)	(11,359,000)
Balances at Mar. 31, 2023	4,134,872,000	4,134,872,000	1,822,000	4,948,024,000	(802,999,000)	(11,975,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	98,704,000	98,704,000			98,704,000
Dividends declared and paid:
Common stock dividends declared and paid	(99,014,000)	(99,014,000)		731,000	(99,745,000)
Issuance of common stock:
Director compensation	270,000	270,000		270,000
Stock purchase plan	62,000	62,000		62,000
ATM equity program	12,782,000	12,782,000	3,000	12,779,000
Stock issuance costs	(264,000)	(264,000)		(264,000)
Amortization of deferred compensation	2,206,000	2,206,000		2,206,000
Amortization of interest rate hedges	616,000	616,000				616,000
Balances at Jun. 30, 2023	$ 4,150,234,000	$ 4,150,234,000	$ 1,825,000	$ 4,963,808,000	$ (804,040,000)	$ (11,359,000)