v3.26.1
Fair Value Measurements - Schedule of Fair Value Disclosures of Financial Instruments (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
ASSETS    
Held to maturity securities $ 9,116 $ 8,622
Loans, net of unearned income (residential) 109,190 106,541
Loans held for sale [1] 876 1,077
LIABILITIES    
Long-term debt, carrying amount 10,877 9,917
Carrying Amount    
ASSETS    
Cash and other short-term investments 12,912 11,450
Held to maturity securities 9,116 8,622
Other investments 1,113 863
Loans, net of unearned income (residential) 107,730 105,103
Loans held for sale 776 928
LIABILITIES    
Time deposits, carrying amount 11,155 12,680
Short-term borrowings, carrying amount 5,284 263
Long-term debt, carrying amount 10,877 9,917
Deposits with no stated maturity 136,660 136,033
Estimate of Fair Value Measurement    
ASSETS    
Cash and other short-term investments 12,912 11,450
Held to maturity securities 8,742 8,313
Other investments 1,113 863
Loans, net of unearned income (residential) 104,569 101,946
Loans held for sale 776 928
LIABILITIES    
Time deposits, fair value 11,198 12,731
Short-term borrowings, fair value 5,284 263
Long-term debt, fair value 10,988 10,047
Deposits with no stated maturity 136,660 136,033
Estimate of Fair Value Measurement | Level 1    
ASSETS    
Cash and other short-term investments 12,912 11,450
Held to maturity securities 0 0
Other investments 0 0
Loans, net of unearned income (residential) 0 0
Loans held for sale 0 0
LIABILITIES    
Time deposits, fair value 0 0
Short-term borrowings, fair value 0 0
Long-term debt, fair value 10,025 9,318
Deposits with no stated maturity 0 0
Estimate of Fair Value Measurement | Level 2    
ASSETS    
Cash and other short-term investments 0 0
Held to maturity securities 8,742 8,313
Other investments 0 0
Loans, net of unearned income (residential) 0 0
Loans held for sale 0 0
LIABILITIES    
Time deposits, fair value 11,198 12,731
Short-term borrowings, fair value 5,284 263
Long-term debt, fair value 963 729
Deposits with no stated maturity 136,660 136,033
Estimate of Fair Value Measurement | Level 3    
ASSETS    
Cash and other short-term investments 0 0
Held to maturity securities 0 0
Other investments 1,113 863
Loans, net of unearned income (residential) 104,569 101,946
Loans held for sale 776 928
LIABILITIES    
Time deposits, fair value 0 0
Short-term borrowings, fair value 0 0
Long-term debt, fair value 0 0
Deposits with no stated maturity $ 0 $ 0
[1] Total loans held for sale include real estate — residential mortgage loans held for sale at fair value of $100 million at March 31, 2026, and $149 million at December 31, 2025.