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

REGULATORY MATTERS AND CAPITAL (Schedule of Bank Capital and Ratio) (Details)

v3.25.0.1
REGULATORY MATTERS AND CAPITAL (Schedule of Bank Capital and Ratio) (Details)
$ in Thousands
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Common Equity Tier 1 capital to risk weighted assets, actual amount $ 2,063,163 $ 1,790,183
Common Equity Tier 1 capital to risk weighted assets, actual ratio 0.0996 0.0984
Common Equity Tier 1 capital to risk weighted assets, required for capital adequacy purposes, amount $ 932,152 $ 818,681
Common Equity Tier 1 capital to risk weighted assets, required for capital adequacy purposes, ratio 0.045 0.045
Tier 1 capital to risk weighted assets, actual amount $ 2,229,519 $ 1,956,539
Tier 1 capital to risk weighted assets, actual ratio 0.1076 0.1076
Tier 1 capital to risk weighted assets, required for capital adequacy purposes, amount $ 1,243,226 $ 1,091,007
Tier 1 capital ratio of risk-weighted assets, required for capital adequacy purposes, ratio 0.06 0.06
Tier 1 capital to risk weighted assets, required in order to be well capitalized under PCA, amount $ 1,243,226 $ 1,091,007
Tier 1 capital to risk weighted assets, required in order to be well capitalized under PCA, ratio 0.06 0.06
Total capital to risk weighted assets, actual amount $ 2,819,398 $ 2,464,817
Total capital to risk weighted assets, actual ratio 0.1361 0.1355
Total capital to risk weighted assets, Required for Capital adequacy purposes, amount $ 1,657,251 $ 1,455,243
Total capital to risk weighted assets, required for capital adequacy purposes, ratio 0.08 0.08
Total capital to risk weighted assets, required in order to be well capitalized under PCA, amount $ 2,071,564 $ 1,819,053
Total capital to risk weighted assets, required in order to be well capitalized under PCA, ratio 0.10 0.10
Tier 1 capital to average adjusted assets, actual amount $ 2,229,519 $ 1,956,539
Tier 1 capital to average adjusted assets, actual ratio 0.0929 0.0963
Tier 1 capital to average adjusted assets, required for capital adequacy purposes, amount $ 959,965 $ 812,685
Tier 1 capital to average adjusted assets, required for capital adequacy purposes, ratio 0.04 0.04
Capital conservation buffer 0.025 0.025
Atlantic Union Bank    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Common Equity Tier 1 capital to risk weighted assets, actual amount $ 2,563,499 $ 2,256,291
Common Equity Tier 1 capital to risk weighted assets, actual ratio 0.1244 0.1248
Common Equity Tier 1 capital to risk weighted assets, required for capital adequacy purposes, amount $ 927,311 $ 813,566
Common Equity Tier 1 capital to risk weighted assets, required for capital adequacy purposes, ratio 0.045 0.045
Common Equity Tier 1 capital to risk weighted assets, required in order to be well capitalized under PCA, amount $ 1,339,449 $ 1,175,152
Common Equity Tier 1 capital to risk weighted assets, required in order to be well capitalized under PCA, ratio 0.065 0.065
Tier 1 capital to risk weighted assets, actual amount $ 2,563,499 $ 2,256,291
Tier 1 capital to risk weighted assets, actual ratio 0.1244 0.1248
Tier 1 capital to risk weighted assets, required for capital adequacy purposes, amount $ 1,236,414 $ 1,084,755
Tier 1 capital ratio of risk-weighted assets, required for capital adequacy purposes, ratio 0.06 0.06
Tier 1 capital to risk weighted assets, required in order to be well capitalized under PCA, amount $ 1,648,552 $ 1,446,340
Tier 1 capital to risk weighted assets, required in order to be well capitalized under PCA, ratio 0.08 0.08
Total capital to risk weighted assets, actual amount $ 2,740,617 $ 2,378,204
Total capital to risk weighted assets, actual ratio 0.133 0.1315
Total capital to risk weighted assets, Required for Capital adequacy purposes, amount $ 1,648,491 $ 1,446,816
Total capital to risk weighted assets, required for capital adequacy purposes, ratio 0.08 0.08
Total capital to risk weighted assets, required in order to be well capitalized under PCA, amount $ 2,060,614 $ 1,808,520
Total capital to risk weighted assets, required in order to be well capitalized under PCA, ratio 0.10 0.10
Tier 1 capital to average adjusted assets, actual amount $ 2,563,499 $ 2,256,291
Tier 1 capital to average adjusted assets, actual ratio 0.1074 0.1116
Tier 1 capital to average adjusted assets, required for capital adequacy purposes, amount $ 954,748 $ 808,706
Tier 1 capital to average adjusted assets, required for capital adequacy purposes, ratio 0.04 0.04
Tier 1 capital to average adjusted assets, required in order to be well capitalized under PCA, amount $ 1,193,435 $ 1,010,883
Tier 1 capital to average adjusted assets, required in order to be well capitalized under PCA, ratio 0.05 0.05