Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Nonrecurring Fair Value Inputs (Details)

v3.19.3.a.u2
Fair Value Measurements - Nonrecurring Fair Value Inputs (Details)
$ in Millions
Dec. 31, 2019
USD ($)
$ / security
Dec. 31, 2018
USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans held-for-sale, measured at fair value $ 3,709 $ 2,942
Loans and leases, measured at fair value 8,335 4,349
Other assets, measured at fair value 15,518 19,739
Nonrecurring | Level 3    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans held-for-sale, measured at fair value 102 0
Loans and leases, measured at fair value 257 474
Other assets, measured at fair value $ 646 $ 14
Measurement Input, Price | Nonrecurring | Level 3 | Discounted cash flow | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans held-for-sale, measurement input 85  
Measurement Input, Price | Nonrecurring | Level 3 | Discounted cash flow | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans held-for-sale, measurement input 97  
Measurement Input, Price | Nonrecurring | Level 3 | Discounted cash flow | Weighted Average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans held-for-sale, measurement input | $ / security 88  
Measurement Input, 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
Measurement Input, 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
Measurement Input, 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 0.25
Measurement Input, Cost 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
Measurement Input, Cost 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
Measurement Input, Cost 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
Merchant Servicing Joint Venture | Nonrecurring | Level 3    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets, measured at fair value $ 640  
Merchant Servicing Joint Venture | Measurement Input, Customer Attrition | Nonrecurring | Level 3 | Discounted cash flow | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets, measurement input 0.00  
Merchant Servicing Joint Venture | Measurement Input, Customer Attrition | Nonrecurring | Level 3 | Discounted cash flow | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets, measurement input 0.19  
Merchant Servicing Joint Venture | Measurement Input, Customer Attrition | Nonrecurring | Level 3 | Discounted cash flow | Weighted Average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets, measurement input 0.05  
Merchant Servicing Joint Venture | Measurement Input, Cost To Service | Nonrecurring | Level 3 | Discounted cash flow | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets, measurement input 0.11  
Merchant Servicing Joint Venture | Measurement Input, Cost To Service | Nonrecurring | Level 3 | Discounted cash flow | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets, measurement input 0.19  
Merchant Servicing Joint Venture | Measurement Input, Cost To Service | Nonrecurring | Level 3 | Discounted cash flow | Weighted Average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets, measurement input 0.15