XML 80 R66.htm IDEA: XBRL DOCUMENT v3.8.0.1
Notes Payable - Callable Medium-Term Notes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Debt Instrument [Line Items]    
Long-term Debt, Maturities, Repayments of Principal in Year Two $ 2,644,734 $ 1,733,121
Long-term Debt, Weighted Average Interest Rate, at Point in Time 1.91% 1.68%
Long-term Debt, Maturities, Repayments of Principal in Year Three $ 1,842,143 $ 1,283,869
Long-term Debt, Maturities, Repayments of Principal in Year Four 849,263 495,096
Long-term Debt, Maturities, Repayments of Principal in Year Five 790,564 602,037
Long-term Debt, Maturities, Repayments of Principal after Year Five 1,306,086 1,108,854
Due after one year 7,432,790 5,222,977
Notes Payable to Banks [Member]    
Debt Instrument [Line Items]    
Short-term Debt, Maximum Month-end Outstanding Amount 3,300,000 $ 6,900,000
Call Option [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Maturities, Repayments of Principal in Year Two $ 71,944  
Long-term Debt, Weighted Average Interest Rate, at Point in Time 2.09%  
Long-term Debt, Maturities, Repayments of Principal in Year Three $ 158,817  
Long-term Debt, Maturities, Repayments of Principal in Year Four 192,717  
Long-term Debt, Maturities, Repayments of Principal in Year Five 145,757  
Long-term Debt, Maturities, Repayments of Principal after Year Five 178,267  
Due after one year $ 747,502  
Due year two [Member] | Call Option [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Weighted Average Interest Rate, at Point in Time 1.35%  
Due year three [Member] | Call Option [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Weighted Average Interest Rate, at Point in Time 1.80%  
Due year four [Member] | Call Option [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Weighted Average Interest Rate, at Point in Time 1.77%  
Due year five [Member] | Call Option [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Weighted Average Interest Rate, at Point in Time 2.20%  
Due after five years [Member] | Call Option [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Weighted Average Interest Rate, at Point in Time 2.90%