CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Assets:
Cash and due from banks	$ 497.0	$ 320.0
Interest bearing deposits in other financial institutions	3,099.0	3,776.0
Cash and cash equivalents	3,596.0	4,096.0
Fair value	18,788.0	13,468.0
Amortized cost	1,571.0	1,510.0
Investment securities - equity	79.0	117.0
Investments in restricted stock, at cost	248.0	232.0
Loans HFS	3,498.0	2,286.0
Loans:
Loans HFI, net of deferred fees and costs	58,677.0	53,676.0
Less: allowance for credit losses	(460.6)	(373.8)
Net loans held for investment	58,216.0	53,302.0
Mortgage servicing rights	1,494.0	1,127.0
Premises and equipment, net	442.0	361.0
Operating lease right of use asset	131.0	128.0
Bank owned life insurance	1,057.0	1,011.0
Goodwill and intangible assets, net	649.0	659.0
Deferred tax assets, net	349.0	281.0
Investments in LIHTC and renewable energy	593.0	606.0
Other assets	2,063.0	1,750.0
Total assets	92,774.0	80,934.0
Deposits:
Non-interest bearing	24,353.0	18,846.0
Interest bearing	52,806.0	47,495.0
Total deposits	77,159.0	66,341.0
Other borrowings	5,240.0	5,573.0
Qualifying debt	1,076.0	899.0
Operating lease liability	160.0	159.0
Other liabilities	1,193.0	1,255.0
Total liabilities	84,828.0	74,227.0
Commitments and contingencies
Equity:
Preferred stock (par value $0.0001; 20,000,000 authorized; 30,000 shares (12,000,000 depositary shares) issued and outstanding and liquidation value per depositary share of $25 at December 31, 2025 and 2024)	295.0	295.0
Common stock (par value $0.0001; 200,000,000 authorized; 112,491,068 and 112,897,807 shares issued at December 31, 2025 and 2024, respectively) and additional paid in capital	2,232.0	2,245.0
Treasury stock, at cost (2,981,687 and 2,845,201 shares at December 31, 2025 and 2024, respectively)	(137.0)	(125.0)
Accumulated other comprehensive loss	(344.0)	(534.0)
Retained earnings	5,607.0	4,826.0
Total Western Alliance stockholders’ equity	7,653.0	6,707.0
Noncontrolling interest in subsidiary	293.0	0.0
Total equity	7,945.9	6,707.5
Total liabilities and stockholders’ equity	$ 92,774.0	$ 80,934.0