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

Fair Value Measurements - Nonrecurring Fair Value Inputs (Details)

v3.25.4
Fair Value Measurements - Nonrecurring Fair Value Inputs (Details)
$ in Millions
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans held for sale, measured at fair value $ 2,271 $ 2,214
Loans and leases, measured at fair value 3,498 4,249
Nonrecurring | Level 3    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans held for sale, measured at fair value 63 2,652
Loans and leases, measured at fair value 112 119
Nonrecurring | Level 3 | Pricing model    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans held for sale, measured at fair value   2,652
Nonrecurring | Level 3 | Market comparables    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans and leases, measured at fair value $ 112 $ 119
Implied yield | Nonrecurring | Level 3 | Pricing model | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans held-for-sale, measurement input   0.09
Implied yield | Nonrecurring | Level 3 | Pricing model | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans held-for-sale, measurement input   0.28
OREO discount | Nonrecurring | Level 3 | Market comparables | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans and leases, measurement input 0.14 0.10
OREO discount | Nonrecurring | Level 3 | Market comparables | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans and leases, measurement input 0.65 0.66
OREO discount | Nonrecurring | Level 3 | Market comparables | Weighted Average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans and leases, measurement input 0.27 0.26
Costs to sell | Nonrecurring | Level 3 | Market comparables | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans and leases, measurement input 0.08 0.08
Costs to sell | Nonrecurring | Level 3 | Market comparables | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans and leases, measurement input 0.10 0.24
Costs to sell | Nonrecurring | Level 3 | Market comparables | Weighted Average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans and leases, measurement input 0.09 0.09