TRADE PAYABLES AND ACCRUED LIABILITIES (Tables)

12 Months Ended

Dec. 31, 2018

Subclassifications of assets, liabilities and equities [abstract]

Disclosure of trade payables and accrued liabilities

As at December 31
($ millions)	2018	2017
Trade payables	519	465
Other payables & accrued liabilities	284	212
Total current trade and accrued liabilities	803	677