Atlantic Union Bankshares Corporation Quarterly report [Sections 13 or 15(d)]

Quarterly report [Sections 13 or 15(d)]

SUBSEQUENT EVENTS (Narrative) (Details)

SUBSEQUENT EVENTS (Narrative) (Details) $ / shares in Units, shares in Thousands, $ in Thousands					1 Months Ended	3 Months Ended					6 Months Ended		12 Months Ended
	Jul. 30, 2026 USD ($)	Jul. 23, 2026 $ / shares	May 06, 2026	Apr. 01, 2025 USD ($) shares	Aug. 06, 2026 USD ($) shares	Sep. 30, 2026 USD ($)	Jun. 30, 2026 USD ($) $ / shares	Mar. 31, 2026 $ / shares	Jun. 30, 2025 USD ($) $ / shares	Mar. 31, 2025 $ / shares	Jun. 30, 2026 USD ($) $ / shares shares	Jun. 30, 2025 $ / shares	Dec. 31, 2025 USD ($) $ / shares	May 05, 2026 USD ($)
Subsequent Event [Line Items]
Dividends on common stock (in dollars per share) \| $ / shares							$ 0.37	$ 0.37	$ 0.34	$ 0.34	$ 0.74	$ 0.68
Dividends on preferred stock (in dollars per share) \| $ / shares							171.88	$ 171.88	$ 171.88	$ 171.88
Common stock, par value (in dollars per share) \| $ / shares							$ 1.33				$ 1.33		$ 1.33
Stock repurchase program, number of shares repurchased \| shares											265
Stock repurchase program, shares repurchased amount											$ 10,000
Stock repurchase program, remaining authorized repurchase amount							$ 240,000				240,000
Stock repurchase program, authorized amount														$ 250,000
Stock repurchase program, expiration date			May 05, 2027
Subordinated Debt							$ 608,000				$ 608,000		$ 608,000
Effective rate, as a percent							3.74%				3.74%		3.15%
Basis spread on variable rate											0.262%		0.262%
Total assets							$ 38,099,868				$ 38,099,868		$ 37,585,754
Total deposits							30,468,257				$ 30,468,257		30,471,636
Issuance of common stock in regard to acquisition									$ 1,275,247
Sandy Spring
Subsequent Event [Line Items]
Conversion ratio				0.9
Additional shares issued \| shares				41,000
Issuance of common stock in regard to acquisition				$ 1,275,969
Common Stock [Member]
Subsequent Event [Line Items]
Issuance of common stock in regard to acquisition									$ 54,530
Series A Preferred Stock [Member]
Subsequent Event [Line Items]
Number of preferred stock represented by each depositary share											each representing a 1/400th ownership interest in a share of its Series A preferred stock
2029 Subordinate Debt \| Sandy Spring
Subsequent Event [Line Items]
Subordinated Debt							$ 168,000				$ 168,000		$ 168,000
Stated percentage on debt instrument							6.62%				6.62%		6.53%
Basis spread on variable rate											2.62%		2.62%
2031 Subordinate Debt
Subsequent Event [Line Items]
Subordinated Debt							$ 250,000				$ 250,000		$ 250,000
Stated percentage on debt instrument							2.88%				2.88%		2.88%
Basis spread on variable rate											0.00%		0.00%
Subsequent Event [Member]
Subsequent Event [Line Items]
Stock repurchase program, number of shares repurchased \| shares					132
Stock repurchase program, shares repurchased amount					$ 5,600
Stock repurchase program, remaining authorized repurchase amount					$ 234,400
Subsequent Event [Member] \| Common Class A [Member] \| O 2026 Q3 Common Dividends [Member]
Subsequent Event [Line Items]
Dividends on common stock (in dollars per share) \| $ / shares		$ 0.37
Dividends payable, date to be paid		Aug. 21, 2026
Dividends payable, date of record		Aug. 07, 2026
Subsequent Event [Member] \| Depositary Shares \| O 2026 Q3 Preferred Dividends [Member]
Subsequent Event [Line Items]
Dividends on preferred stock (in dollars per share) \| $ / shares		$ 0.43
Subsequent Event [Member] \| Series A Preferred Stock [Member] \| O 2026 Q3 Preferred Dividends [Member]
Subsequent Event [Line Items]
Number of preferred stock represented by each depositary share		each representing a 1/400th ownership interest in a share of Series A preferred stock.
Dividends on preferred stock (in dollars per share) \| $ / shares		$ 171.88
Dividends payable, date declared		Jul. 23, 2026
Dividends payable, date to be paid		Sep. 01, 2026
Dividends payable, date of record		Aug. 17, 2026
Subsequent Event [Member] \| 2036 Subordinated Notes
Subsequent Event [Line Items]
Subordinated Debt	$ 250,000
Stated percentage on debt instrument	6.25%
Net proceeds from issuance of long-term debt	$ 246,900
Subsequent Event [Member] \| 2029 Subordinate Debt
Subsequent Event [Line Items]
Basis spread on variable rate	2.13%
Principal amount of notice of redemption						$ 168,000
Subsequent Event [Member] \| 2029 Subordinate Debt \| Sandy Spring
Subsequent Event [Line Items]
Subordinated Debt						$ 168,000