v3.25.2
Regulatory Capital (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Retained earnings $ 30,373 $ 29,582
Capital ratio: required common equity tier 1 capital 8.00% 8.00%
Capital ratio: required tier 1 capital 0.095 0.095
Capital ratio: required total capital 0.115 0.115
Tier 1 leverage capital ratio, minimum 0.040 0.040
Leverage ratio minimum 0.05  
Basel III Advanced Approaches    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Common stock and related surplus $ 11,202 $ 11,226
Retained earnings 30,373 29,582
Accumulated other comprehensive income (loss) (1,321) (2,100)
Treasury stock, at cost (16,506) (16,198)
Total 23,748 22,510
Goodwill and other intangible assets, net of associated deferred tax liabilities (8,453) (8,320)
Other adjustments (504) (391)
Common equity tier 1 capital 14,791 13,799
Preferred stock 3,559 2,816
Tier 1 capital 18,350 16,615
Qualifying subordinated long-term debt 1,876 1,861
Allowance for credit losses 0 0
Total capital 20,226 18,476
Credit risk 65,427 63,252
Operational risk 51,250 49,350
Market risk 1,975 2,000
Total risk-weighted assets 118,652 114,602
Adjusted quarterly average assets $ 344,822 $ 318,470
Common equity tier 1 capital 12.50% 12.00%
Tier 1 capital 0.155 0.145
Total capital 0.170 0.161
Tier 1 leverage capital ratio, actual 0.053 0.052
Basel III Standardized Approach    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Common stock and related surplus $ 11,202 $ 11,226
Retained earnings 30,373 29,582
Accumulated other comprehensive income (loss) (1,321) (2,100)
Treasury stock, at cost (16,506) (16,198)
Total 23,748 22,510
Goodwill and other intangible assets, net of associated deferred tax liabilities (8,453) (8,320)
Other adjustments (504) (391)
Common equity tier 1 capital 14,791 13,799
Preferred stock 3,559 2,816
Tier 1 capital 18,350 16,615
Qualifying subordinated long-term debt 1,876 1,861
Allowance for credit losses 192 183
Total capital 20,418 18,659
Credit risk 135,702 124,281
Market risk 1,975 2,000
Total risk-weighted assets 137,677 126,281
Adjusted quarterly average assets $ 344,822 $ 318,470
Common equity tier 1 capital 10.70% 10.90%
Tier 1 capital 0.133 0.132
Total capital 0.148 0.148
Tier 1 leverage capital ratio, actual 0.053 0.052
State Street Bank | Basel III Advanced Approaches    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Common stock and related surplus $ 13,333 $ 13,333
Retained earnings 16,907 15,977
Accumulated other comprehensive income (loss) (1,100) (1,805)
Treasury stock, at cost 0 0
Total 29,140 27,505
Goodwill and other intangible assets, net of associated deferred tax liabilities (8,178) (8,054)
Other adjustments (390) (278)
Common equity tier 1 capital 20,572 19,173
Preferred stock 0 0
Tier 1 capital 20,572 19,173
Qualifying subordinated long-term debt 527 530
Allowance for credit losses 0 0
Total capital 21,099 19,703
Credit risk 62,192 57,883
Operational risk 49,688 47,538
Market risk 1,975 2,000
Total risk-weighted assets 113,855 107,421
Adjusted quarterly average assets $ 340,510 $ 314,754
Common equity tier 1 capital 18.10% 17.80%
Tier 1 capital 0.181 0.178
Total capital 0.185 0.183
Tier 1 leverage capital ratio, actual 0.060 0.061
State Street Bank | Basel III Standardized Approach    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Common stock and related surplus $ 13,333 $ 13,333
Retained earnings 16,907 15,977
Accumulated other comprehensive income (loss) (1,100) (1,805)
Treasury stock, at cost 0 0
Total 29,140 27,505
Goodwill and other intangible assets, net of associated deferred tax liabilities (8,178) (8,054)
Other adjustments (390) (278)
Common equity tier 1 capital 20,572 19,173
Preferred stock 0 0
Tier 1 capital 20,572 19,173
Qualifying subordinated long-term debt 527 530
Allowance for credit losses 192 183
Total capital 21,291 19,886
Credit risk 133,506 121,785
Market risk 1,975 2,000
Total risk-weighted assets 135,481 123,785
Adjusted quarterly average assets $ 340,510 $ 314,754
Common equity tier 1 capital 15.20% 15.50%
Tier 1 capital 0.152 0.155
Total capital 0.157 0.161
Tier 1 leverage capital ratio, actual 0.060 0.061