XML 75 R60.htm IDEA: XBRL DOCUMENT v3.10.0.1
BORROWINGS - Corporate Borrowings (Details) - USD ($)
$ in Millions
Jun. 30, 2018
Dec. 31, 2017
Apr. 17, 2017
Feb. 22, 2017
Corporate revolving credit facility        
Disclosure of detailed information about borrowings [line items]        
Credit facility, maximum borrowing capacity $ 1,975      
Subsidiary and corporate borrowings 0 $ 789    
Letter of credit outstanding amount $ 59 106    
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage 0.18%      
Corporate revolving credit facility | Floating interest rate        
Disclosure of detailed information about borrowings [line items]        
Borrowings, adjustment to interest rate basis 1.20%      
Medium Term Notes, Public - Canadian - Maturing October 30, 2018        
Disclosure of detailed information about borrowings [line items]        
Subsidiary and corporate borrowings $ 95 99    
Medium Term Notes, Public - Canadian - Maturing October 30, 2018 | Fixed interest rate        
Disclosure of detailed information about borrowings [line items]        
Annual Rate 3.00%      
Medium Term Notes, Public - Canadian - Maturing October 30, 2020        
Disclosure of detailed information about borrowings [line items]        
Subsidiary and corporate borrowings $ 285 298    
Medium Term Notes, Public - Canadian - Maturing October 30, 2020 | Fixed interest rate        
Disclosure of detailed information about borrowings [line items]        
Annual Rate 3.50%      
Medium Term Notes, Public - Canadian - Maturing March 11, 2022        
Disclosure of detailed information about borrowings [line items]        
Subsidiary and corporate borrowings $ 343 358    
Medium Term Notes, Public - Canadian - Maturing March 11, 2022 | Fixed interest rate        
Disclosure of detailed information about borrowings [line items]        
Annual Rate 3.50%      
Medium Term Notes, Public - Canadian - Maturing February 22, 2024        
Disclosure of detailed information about borrowings [line items]        
Subsidiary and corporate borrowings $ 228 239    
Medium Term Notes, Public - Canadian - Maturing February 22, 2024 | Fixed interest rate        
Disclosure of detailed information about borrowings [line items]        
Annual Rate 3.30%   3.30%  
Medium Term Notes, Public - Canadian - Maturing February 22, 2024        
Disclosure of detailed information about borrowings [line items]        
Subsidiary and corporate borrowings $ 305 318    
Medium Term Notes, Public - Canadian - Maturing February 22, 2024 | Fixed interest rate        
Disclosure of detailed information about borrowings [line items]        
Annual Rate 3.30%     3.30%
Revolving credit facility with Brookfield        
Disclosure of detailed information about borrowings [line items]        
Credit facility, maximum borrowing capacity $ 500      
Subsidiary and corporate borrowings $ 0 0    
Revolving credit facility with Brookfield | Floating interest rate        
Disclosure of detailed information about borrowings [line items]        
Borrowings, adjustment to interest rate basis 2.00%      
Corporate borrowings        
Disclosure of detailed information about borrowings [line items]        
Subsidiary and corporate borrowings $ 1,256 $ 2,101