Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Nonrecurring Fair Value Inputs (Details)

v3.20.4
Fair Value Measurements - Nonrecurring Fair Value Inputs (Details)
$ in Millions
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
$ / security
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans held for sale, measured at fair value $ 1,585 $ 3,709
Loans and leases, measured at fair value 6,681 8,335
Other assets, measured at fair value 15,718 15,518
Nonrecurring | Level 3    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans held for sale, measured at fair value 792 102
Loans and leases, measured at fair value 301 257
Other assets, measured at fair value 576 $ 646
Nonrecurring | Level 3 | Merchant Servicing Joint Venture    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets, measured at fair value $ 640  
Price | Nonrecurring | Level 3 | Discounted cash flow | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans held-for-sale, measurement input 8 85
Price | Nonrecurring | Level 3 | Discounted cash flow | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans held-for-sale, measurement input 99 97
Price | Nonrecurring | Level 3 | Discounted cash flow | Weighted Average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans held-for-sale, measurement input 95 88
Discount rate | Nonrecurring | Level 3 | Market comparables | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans and leases, measurement input 0.13 0.13
Discount rate | Nonrecurring | Level 3 | Market comparables | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans and leases, measurement input 0.59 0.59
Discount rate | Nonrecurring | Level 3 | Market comparables | Weighted Average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans and leases, measurement input 0.24 0.24
Discount rate | Nonrecurring | Level 3 | Discounted cash flow | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets, measurement input 0.11  
Discount rate | Nonrecurring | Level 3 | Discounted cash flow | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets, measurement input 0.14  
Discount rate | Nonrecurring | Level 3 | Discounted cash flow | Weighted Average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets, measurement input 0.12  
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 0.26 0.26
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
Revenue attrition | Nonrecurring | Level 3 | Discounted cash flow | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets, measurement input 0.02  
Revenue attrition | Nonrecurring | Level 3 | Discounted cash flow | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets, measurement input 0.19  
Revenue attrition | Nonrecurring | Level 3 | Discounted cash flow | Weighted Average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets, measurement input 0.07  
Customer attrition | Nonrecurring | Level 3 | Discounted cash flow | Minimum | Merchant Servicing Joint Venture    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets, measurement input   0
Customer attrition | Nonrecurring | Level 3 | Discounted cash flow | Maximum | Merchant Servicing Joint Venture    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets, measurement input   0.19
Customer attrition | Nonrecurring | Level 3 | Discounted cash flow | Weighted Average | Merchant Servicing Joint Venture    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets, measurement input   0.05
Cost to service | Nonrecurring | Level 3 | Discounted cash flow | Minimum | Merchant Servicing Joint Venture    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets, measurement input   0.11
Cost to service | Nonrecurring | Level 3 | Discounted cash flow | Maximum | Merchant Servicing Joint Venture    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets, measurement input   0.19
Cost to service | Nonrecurring | Level 3 | Discounted cash flow | Weighted Average | Merchant Servicing Joint Venture    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets, measurement input   0.15