XML 50 R21.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Cash And Cash Equivalents | 12 Months Ended
--- | ---
Dec. 31, 2017
Cash and cash equivalents |
Cash and Cash Equivalents | 15. CASH AND CASH EQUIVALENTS
($ millions) |  | Dec 31 2017 |  | Dec 31 2016 |
Cash |  | 1 184 |  | 1 103 |
Cash equivalents |  | 1 488 |  | 1 913 |
|  | 2 672 |  | 3 016 |

X
- References No definition available. + Details
Name: | ifrs-full_CashAndCashEquivalentsAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of cash and cash equivalents. [Refer: Cash and cash equivalents] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 10 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_10_e&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_DisclosureOfCashAndCashEquivalentsExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration