Annual report pursuant to Section 13 and 15(d)

VIEs - Unconsolidated VIEs (Details)

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VIEs - Unconsolidated VIEs (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Variable Interest Entity [Line Items]    
Total Assets $ 920 $ 848
Total Liabilities 647 662
Maximum Exposure to Loss 906 834
Trust Preferred Securities    
Variable Interest Entity [Line Items]    
Total Assets 14 14
Total Liabilities 252 252
Maximum Exposure to Loss 0 0
Affordable Housing Tax Credit Partnerships    
Variable Interest Entity [Line Items]    
Total Assets 727 708
Total Liabilities 332 357
Maximum Exposure to Loss 727 708
Other Investments    
Variable Interest Entity [Line Items]    
Total Assets 179 126
Total Liabilities 63 53
Maximum Exposure to Loss $ 179 $ 126