XML 108 R94.htm IDEA: XBRL DOCUMENT v3.20.4
Debt (Subordinated debt) (Details) - Subordinated
$ in Thousands
Dec. 31, 2020
USD ($)
Debt Instrument [Line Items]  
Amount outstanding $ 2,250,000
ECAPS Subordinated Notes (a)  
Debt Instrument [Line Items]  
Amount outstanding $ 1,000,000
Weighted average interest rate 3.33%
2045 Subordinated Notes  
Debt Instrument [Line Items]  
Amount outstanding $ 500,000
Weighted average interest rate 6.50%
2079 Subordinated Notes  
Debt Instrument [Line Items]  
Amount outstanding $ 750,000
Weighted average interest rate 5.88%