Annual report pursuant to Section 13 and 15(d)

Derivative Instruments and Hedging Activities Schedule of Interest Rate Swap Payers (Details)

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Derivative Instruments and Hedging Activities Schedule of Interest Rate Swap Payers (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Derivative [Line Items]      
Notional $ 49,205,497,000 $ 36,528,169,000 $ 31,226,878,000
Interest Rate Swap [Member] | Long [Member]      
Derivative [Line Items]      
Notional $ 30,913,709,000 $ 21,406,167,000  
Weighted Average Variable Interest Rate 1.921% 2.651%  
Weighted Average Remaining Maturity 3 years 1 month 20 days 3 years 9 months  
Weighted Average Fixed Interest Rate 1.878% 1.978%  
Interest Rate Swap [Member] | Derivative Maturity Within One Year From Balance Sheet Date [Member] | Long [Member]      
Derivative [Line Items]      
Notional $ 3,640,000,000 $ 4,336,897,000  
Weighted Average Variable Interest Rate 1.937% 2.565%  
Weighted Average Remaining Maturity 25 days 24 days  
Weighted Average Fixed Interest Rate 1.806% 1.769%  
Interest Rate Swap [Member] | Derivative Maturity Over One And Within Two Years From Balance Sheet Date [Member] | Long [Member]      
Derivative [Line Items]      
Notional $ 15,740,977,000 $ 3,640,000,000  
Weighted Average Variable Interest Rate 1.91% 2.689%  
Weighted Average Remaining Maturity 1 year 5 months 19 days 1 year 9 months 29 days  
Weighted Average Fixed Interest Rate 1.681% 1.806%  
Interest Rate Swap [Member] | Derivative Maturity Over Two And Within Three Years From Balance Sheet Date [Member] | Long [Member]      
Derivative [Line Items]      
Notional $ 2,578,640,000 $ 4,117,000,000  
Weighted Average Variable Interest Rate 1.901% 2.687%  
Weighted Average Remaining Maturity 2 years 8 months 26 days 2 years 8 months 8 days  
Weighted Average Fixed Interest Rate 1.911% 1.55%  
Interest Rate Swap [Member] | Derivative Maturity Over Three And Within Four Years From Balance Sheet Date [Member] | Long [Member]      
Derivative [Line Items]      
Notional $ 215,000,000 $ 2,470,000,000  
Weighted Average Variable Interest Rate 1.91% 2.728%  
Weighted Average Remaining Maturity 3 years 10 months 24 days 3 years 9 months  
Weighted Average Fixed Interest Rate 3.057% 2.002%  
Interest Rate Swap [Member] | Derivative Maturity Over Four Years From Balance Sheet Date [Member] | Long [Member]      
Derivative [Line Items]      
Notional $ 8,739,092,000 $ 6,842,270,000  
Weighted Average Variable Interest Rate 1.935% 2.636%  
Weighted Average Remaining Maturity 7 years 2 months 12 days 7 years 7 months 6 days  
Weighted Average Fixed Interest Rate 2.224% 2.495%  
Forward Starting Interest Rate Swap [Member]      
Derivative [Line Items]      
Notional   $ 572,000,000.0  
Weighted Average Fixed Interest Rate   2.80%