Atlantic Union Bankshares Corporation Annual report [Section 13 and 15(d), not S-K Item 405]

Annual report [Section 13 and 15(d), not S-K Item 405]

FAIR VALUE MEASUREMENTS (Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details)

FAIR VALUE MEASUREMENTS (Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
ASSETS
Securities available for sale, at fair value	$ 4,194,301	$ 2,442,166
Loans held for sale	18,486	9,420
Financial Derivatives	112,686	97,445
LIABILITIES
Financial Derivatives	166,690	199,548
Fair Value, Inputs, Level 1 [Member]
ASSETS
Securities available for sale, at fair value	88,946	62,199
Loans held for sale	0	0
Financial Derivatives	0	0
LIABILITIES
Financial Derivatives	0	0
Fair Value, Inputs, Level 2 [Member]
ASSETS
Securities available for sale, at fair value	4,105,355	2,379,967
Loans held for sale	18,486	9,420
Financial Derivatives	112,686	97,445
LIABILITIES
Financial Derivatives	166,690	199,548
Fair Value, Inputs, Level 3 [Member]
ASSETS
Securities available for sale, at fair value	0	0
Loans held for sale	0	0
Financial Derivatives	0	0
LIABILITIES
Financial Derivatives	0	0
Fair Value, Recurring [Member]
ASSETS
Loans held for sale	18,486	9,420
Financial Derivatives	112,686	97,445
LIABILITIES
Financial Derivatives	166,690	199,548
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
ASSETS
Loans held for sale	0	0
Financial Derivatives	0	0
LIABILITIES
Financial Derivatives	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
ASSETS
Loans held for sale	18,486	9,420
Financial Derivatives	112,686	97,445
LIABILITIES
Financial Derivatives	166,690	199,548
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
ASSETS
Loans held for sale	0	0
Financial Derivatives	0	0
LIABILITIES
Financial Derivatives	0	0
US Government Agencies Debt Securities [Member]
ASSETS
Securities available for sale, at fair value	104,002	66,013
US Government Agencies Debt Securities [Member] \| Fair Value, Recurring [Member]
ASSETS
Securities available for sale, at fair value	104,002	66,013
US Government Agencies Debt Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
ASSETS
Securities available for sale, at fair value	88,946	62,199
US Government Agencies Debt Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
ASSETS
Securities available for sale, at fair value	15,056	3,814
US Government Agencies Debt Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
ASSETS
Securities available for sale, at fair value	0	0
US States and Political Subdivisions Debt Securities [Member]
ASSETS
Securities available for sale, at fair value	487,885	468,337
US States and Political Subdivisions Debt Securities [Member] \| Fair Value, Recurring [Member]
ASSETS
Securities available for sale, at fair value	487,885	468,337
US States and Political Subdivisions Debt Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
ASSETS
Securities available for sale, at fair value	0	0
US States and Political Subdivisions Debt Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
ASSETS
Securities available for sale, at fair value	487,885	468,337
US States and Political Subdivisions Debt Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
ASSETS
Securities available for sale, at fair value	0	0
Corporate Bond Securities [Member]
ASSETS
Securities available for sale, at fair value	217,934	244,712
Corporate Bond Securities [Member] \| Fair Value, Recurring [Member]
ASSETS
Securities available for sale, at fair value	217,934	244,712
Corporate Bond Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
ASSETS
Securities available for sale, at fair value	0	0
Corporate Bond Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
ASSETS
Securities available for sale, at fair value	217,934	244,712
Corporate Bond Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
ASSETS
Securities available for sale, at fair value	0	0
Collateralized Mortgage-Backed Securities [Member] \| Fair Value, Recurring [Member]
ASSETS
Securities available for sale, at fair value	3,382,524	1,661,244
Collateralized Mortgage-Backed Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
ASSETS
Securities available for sale, at fair value	0	0
Collateralized Mortgage-Backed Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
ASSETS
Securities available for sale, at fair value	3,382,524	1,661,244
Collateralized Mortgage-Backed Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
ASSETS
Securities available for sale, at fair value	0	0
Collateralized Securities, Other [Member]
ASSETS
Securities available for sale, at fair value	1,956	1,860
Collateralized Securities, Other [Member] \| Fair Value, Recurring [Member]
ASSETS
Securities available for sale, at fair value	1,956	1,860
Collateralized Securities, Other [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
ASSETS
Securities available for sale, at fair value	0	0
Collateralized Securities, Other [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
ASSETS
Securities available for sale, at fair value	1,956	1,860
Collateralized Securities, Other [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
ASSETS
Securities available for sale, at fair value	$ 0	$ 0