CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Net interest income
Interest income	$ 1,177,325	$ 921,494	$ 2,271,813	$ 1,739,744
Interest expense	1,123,767	953,457	2,224,706	1,752,244
Net interest income	53,558	(31,963)	47,107	(12,500)
Net servicing income
Servicing and related income	120,515	83,790	235,599	168,063
Servicing and related expense	12,617	8,930	24,833	16,810
Net servicing income	107,898	74,860	210,766	151,253
Other income (loss)
Net gains (losses) on investments and other	(568,745)	(1,308,948)	(1,562,872)	(1,307,236)
Net gains (losses) on derivatives	430,487	1,475,325	1,807,631	574,573
Loan loss (provision) reversal	0	0	0	219
Other, net	24,791	9,105	48,158	24,603
Total other income (loss)	(113,467)	175,482	292,917	(707,841)
General and administrative expenses
Compensation expense	33,274	30,635	61,995	60,026
Other general and administrative expenses	11,617	12,280	21,466	23,717
Total general and administrative expenses	44,891	42,915	83,461	83,743
Income (loss) before income taxes	3,098	175,464	467,329	(652,831)
Income taxes	11,931	14,277	10,988	25,310
Net income (loss)	(8,833)	161,187	456,341	(678,141)
Net income (loss) attributable to noncontrolling interests	650	(5,846)	2,932	(918)
Net income (loss) attributable to Annaly	(9,483)	167,033	453,409	(677,223)
Dividends on preferred stock	37,158	35,766	74,219	67,641
Net income (loss) available (related) to common stockholders	$ (46,641)	$ 131,267	$ 379,190	$ (744,864)
Net income (loss) per share available (related) to common stockholders
Basic (in dollars per share)	$ (0.09)	$ 0.27	$ 0.76	$ (1.51)
Diluted (in dollars per share)	$ (0.09)	$ 0.27	$ 0.76	$ (1.51)
Weighted average number of common shares outstanding
Basic (in shares)	500,950,563	494,165,256	500,781,701	491,939,177
Diluted (in shares)	500,950,563	494,358,982	501,415,515	491,939,177
Other comprehensive income (loss)
Net income (loss)	$ (8,833)	$ 161,187	$ 456,341	$ (678,141)
Unrealized gains (losses) on available-for-sale securities	(54,243)	(294,045)	(336,112)	381,329
Reclassification adjustment for net (gains) losses included in net income (loss)	179,234	462,128	514,585	945,036
Other comprehensive income (loss)	124,991	168,083	178,473	1,326,365
Comprehensive income (loss)	116,158	329,270	634,814	648,224
Comprehensive income (loss) attributable to noncontrolling interests	650	(5,846)	2,932	(918)
Comprehensive income (loss) attributable to Annaly	115,508	335,116	631,882	649,142
Dividends on preferred stock	37,158	35,766	74,219	67,641
Comprehensive income (loss) attributable to common stockholders	$ 78,350	$ 299,350	$ 557,663	$ 581,501