XML 57 R45.htm IDEA: XBRL DOCUMENT v3.19.2
Derivative contracts (Tables)
6 Months Ended
Jun. 30, 2019
Derivative Instruments And Hedging Activities Disclosure [Abstract]  
Derivative contracts outstanding The liabilities and related notional values of these contracts follows (in millions).

 

 

Liabilities

 

 

Notional

Value

 

June 30, 2019

 

$

1,470

 

 

$

24,524

 

December 31, 2018

 

 

2,452

 

 

 

26,759