XML 85 R17.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Change in Non-Cash Working Capital Balances Related to Operations
 12 Months Ended
Dec. 31, 2019
Supplemental Cash Flow Elements [Abstract]  
Change in Non-Cash Working Capital Balances Related to Operations Change in non-cash working capital balances related to operations
(in millions of Canadian dollars)
2019

2018

2017

Source (use) of cash:
 
 
 
Accounts receivable, net
$
27

$
(107
)
$
(91
)
Materials and supplies
(8
)
(11
)
9

Other current assets
(24
)
30

(26
)
Accounts payable and accrued liabilities
(21
)
153

(30
)
Change in non-cash working capital
$
(26
)
$
65

$
(138
)