CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Net interest income
Interest income	$ 655,850	$ 763,378
Interest expense	74,922	75,973
Net interest income	580,928	687,405
Net servicing income
Servicing and related income	34,715	9,229
Servicing and related expense	3,757	2,297
Net servicing income	30,958	6,932
Other income (loss)
Net gains (losses) on investments and other	(159,804)	38,405
Net gains (losses) on other derivatives and financial instruments	1,642,028	1,169,383
Loan loss (provision) reversal	(608)	139,620
Business divestiture-related gains (losses)	(354)	(249,563)
Other, net	3,058	6,536
Total other income (loss)	1,484,320	1,104,381
General and administrative expenses
Compensation and management fee	33,002	31,518
Other general and administrative expenses	12,762	16,387
Total general and administrative expenses	45,764	47,905
Income (loss) before income taxes	2,050,442	1,750,813
Income taxes	26,548	(321)
Net income (loss)	2,023,894	1,751,134
Net income (loss) attributable to noncontrolling interests	1,639	321
Net income (loss) attributable to Annaly	2,022,255	1,750,813
Dividends on preferred stock	26,883	26,883
Net income (loss) available (related) to common stockholders	$ 1,995,372	$ 1,723,930
Net income (loss) per share available (related) to common stockholders
Basic (in dollars per share)	$ 1.37	$ 1.23
Diluted (in dollars per share)	$ 1.36	$ 1.23
Weighted average number of common shares outstanding
Basic (in shares)	1,461,363,637	1,399,210,925
Diluted (in shares)	1,462,451,965	1,400,000,727
Other comprehensive income (loss)
Net income (loss)	$ 2,023,894	$ 1,751,134
Unrealized gains (losses) on available-for-sale securities	(3,568,679)	(1,428,927)
Reclassification adjustment for net (gains) losses included in net income (loss)	144,787	56,823
Other comprehensive income (loss)	(3,423,892)	(1,372,104)
Comprehensive income (loss)	(1,399,998)	379,030
Comprehensive income (loss) attributable to noncontrolling interests	1,639	321
Comprehensive income (loss) attributable to Annaly	(1,401,637)	378,709
Dividends on preferred stock	26,883	26,883
Comprehensive income (loss) attributable to common stockholders	$ (1,428,520)	$ 351,826