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Financial Derivative Instruments (Tables)
 12 Months Ended
Dec. 31, 2019
Notes to Consolidated Financial Statements [Abstract]  
Derivative instruments

 

As at December 31, 2019

As at December 31, 2018

 

Assets

Liabilities

Assets

Liabilities

 

$ millions

$ millions

 

Included in current assets and liabilities:

 

 

 

 

Foreign currency and interest derivative instruments

10

(5)

13

(16)

Derivative instruments on energy and marine transport

1

(3)

-

(5)

 

11

(8)

13

(21)

Included in non-current assets and liabilities:

 

 

 

 

Foreign currency and interest derivative instruments

57

(6)

15

-