CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Common Stock Par Value	Capital in Excess of Par Value	Accumulated Other Comprehensive Loss	Retained Earnings (Deficit)	Treasury Stock	Total Ventas Stockholders’ Equity	Noncontrolling Interests
Beginning Balance at Dec. 31, 2020	$ 10,278,191	$ 93,635	$ 14,171,262	$ (54,354)	$ (4,030,376)	$ 0	$ 10,180,167	$ 98,024
Increase (decrease) in stockholders' equity
Net (loss) income attributable to common stockholders	29,182	0	0	0	29,182	0	29,182
Net income attributable to noncontrolling interest	3,708							3,708
Net (loss) income	32,890
Other comprehensive (loss) income	499	0	0	(3,936)	0	0	(3,936)	4,435
Noncontrolling Interest Period Increase (Decrease), Including The Impact To Equity	1,277	0	6,239	0	0	0	6,239	(4,962)
Dividends to common stockholders	(338,858)	0	0	0	(338,858)	0	(338,858)	0
Stock Issued During Period, Value, Share-based Payment Arrangements, Restricted Stock Awards And Other, After Forfeiture	35,263	149	35,434	0	0	(320)	35,263	0
Adjustments To Additional Paid In Capital Related To Redeemable Operating Partner Unitholder Interests To Record At Fair Value	(25,339)	0	(25,339)	0	0	0	(25,339)	0
Redemption of OP Units	(19)	0	(19)	0	0	0	(19)	0
Ending Balance at Jun. 30, 2021	9,983,904	93,784	14,187,577	(58,290)	(4,340,052)	(320)	9,882,699	101,205
Beginning Balance at Mar. 31, 2021	10,071,620	93,750	14,186,692	(52,497)	(4,257,001)	(789)	9,970,155	101,465
Increase (decrease) in stockholders' equity
Net (loss) income attributable to common stockholders	86,391	0	0	0	86,391	0	86,391
Net income attributable to noncontrolling interest	1,897							1,897
Net (loss) income	88,288
Other comprehensive (loss) income	(4,274)	0	0	(5,793)	0	0	(5,793)	1,519
Noncontrolling Interest Period Increase (Decrease), Including The Impact To Equity	(872)	0	2,804	0	0	0	2,804	(3,676)
Dividends to common stockholders	(169,442)	0	0	0	(169,442)	0	(169,442)	0
Stock Issued During Period, Value, Share-based Payment Arrangements, Restricted Stock Awards And Other, After Forfeiture	11,008	34	10,505	0	0	469	11,008	0
Adjustments To Additional Paid In Capital Related To Redeemable Operating Partner Unitholder Interests To Record At Fair Value	(12,421)	0	(12,421)	0	0	0	(12,421)	0
Redemption of OP Units	(3)	0	(3)	0	0	0	(3)	0
Ending Balance at Jun. 30, 2021	9,983,904	93,784	14,187,577	(58,290)	(4,340,052)	(320)	9,882,699	101,205
Beginning Balance at Dec. 31, 2021	10,945,760	99,838	15,498,956	(64,520)	(4,679,889)	0	10,854,385	91,375
Increase (decrease) in stockholders' equity
Net (loss) income attributable to common stockholders	(3,684)	0	0	0	(3,684)	0	(3,684)
Net income attributable to noncontrolling interest	3,074
Net (loss) income	(610)
Other comprehensive (loss) income	10,282	0	0	8,165	0	0	8,165	2,117
Noncontrolling Interest Period Increase (Decrease), Including The Impact To Equity	(12,289)	0	(6,521)	0	0	0	(6,521)	(5,768)
Dividends to common stockholders	(360,996)	0	0	0	(360,996)	0	(360,996)	0
Stock Issued During Period, Value, Share-based Payment Arrangements, Restricted Stock Awards And Other, After Forfeiture	24,839	75	25,172	0	0	(408)	24,839	0
Adjustments To Additional Paid In Capital Related To Redeemable Operating Partner Unitholder Interests To Record At Fair Value	(3,592)	0	(3,592)	0	0	0	(3,592)	0
Ending Balance at Jun. 30, 2022	10,603,394	99,913	15,514,015	(56,355)	(5,044,569)	(408)	10,512,596	90,798
Beginning Balance at Mar. 31, 2022	10,792,690	99,888	15,478,467	(59,296)	(4,821,653)	0	10,697,406	95,284
Increase (decrease) in stockholders' equity
Net (loss) income attributable to common stockholders	(42,416)	0	0	0	(42,416)	0	(42,416)
Net income attributable to noncontrolling interest	1,214							1,214
Net (loss) income	(41,202)
Other comprehensive (loss) income	1,147	0	0	2,941	0	0	2,941	(1,794)
Noncontrolling Interest Period Increase (Decrease), Including The Impact To Equity	(11,285)	0	(7,379)	0	0	0	(7,379)	(3,906)
Dividends to common stockholders	(180,500)	0	0	0	(180,500)	0	(180,500)	0
Stock Issued During Period, Value, Share-based Payment Arrangements, Restricted Stock Awards And Other, After Forfeiture	9,499	25	9,882	0	0	(408)	9,499	0
Adjustments To Additional Paid In Capital Related To Redeemable Operating Partner Unitholder Interests To Record At Fair Value	33,045	0	33,045	0	0	0	33,045	0
Ending Balance at Jun. 30, 2022	$ 10,603,394	$ 99,913	$ 15,514,015	$ (56,355)	$ (5,044,569)	$ (408)	$ 10,512,596	$ 90,798