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

Quarterly report [Sections 13 or 15(d)]

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)
Notes Tables
Notes Details

LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Narrative) (Details)

v3.25.3

LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Narrative) (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) segment	Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($) segment	Jun. 30, 2025 USD ($)	Jun. 26, 2025 USD ($)	Apr. 01, 2025 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gain on CRE loan sale			$ 10,915,000	$ 0
Nonaccrual loans, interest income	$ 0	$ 0	0	0
Loans under modified terms	2,183,000	1,296,000	16,148,000	24,477,000
Amortized Cost	2,183,000	1,296,000	16,148,000	24,477,000
Total Allowance for credit losses	293,035,000	160,685,000	293,035,000	160,685,000	$ 178,644,000	$ 315,574,000			$ 158,131,000	$ 132,182,000
Unfunded commitments on loans modified and designated as TLMs	0		0		$ 0
TLM loans that went into default	0	0	0	0
TLMs that are past due	0	0	$ 0	0
Number of reportable segments \| segment			2		2
Loans held for investment, accrued interest receivable	103,600,000		$ 103,600,000		$ 73,700,000
Financing Receivable Accrued Interest After Allowance For Credit Loss Statement Of Financial Position Extensible List Not Disclosed (Flag)			true		true
Revolving loans converted to term			$ 0		$ 0
Sandy Spring
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid principle balance of CRE loans acquired							$ 2,000,000,000
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Allowance for credit losses	233,759,000	$ 132,720,000	233,759,000	$ 132,720,000	$ 148,887,000	$ 257,403,000			$ 131,139,000	$ 105,896,000
CRE \| Sandy Spring
Accounts, Notes, Loans and Financing Receivable [Line Items]
LHFS								$ 1,839,638,000
Gain on CRE loan sale			10,900,000
Commercial Real Estate \| Sandy Spring
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gain on CRE loan sale	$ (4,800,000)		$ 10,900,000

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