XML 218 R211.htm IDEA: XBRL DOCUMENT v3.8.0.1

Contingencies and commitments - Summary of capital commitments (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Capital Commitments
Capital Commitments	$ 2,641	$ 2,230
Due within 1 year [member]
Capital Commitments
Capital Commitments	2,052	1,588
Between 1 and 3 years [member]
Capital Commitments
Capital Commitments	531	433
Between 3 and 5 years [member]
Capital Commitments
Capital Commitments	58	194
More than 5 years [member]
Capital Commitments
Capital Commitments		15
Joint ventures [Member]
Capital Commitments
Capital Commitments	29	113
Joint ventures [Member] | Due within 1 year [member]
Capital Commitments
Capital Commitments	$ 29	$ 113

X

- Definition

The amount of future capital expenditures that the entity is committed to make.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2016-01-13
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2016-03-30&anchor=para_112_c&doctype=Standard
-URIDate 2016-03-31

+ Details

Name:	ifrs-full_CapitalCommitments
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	ifrs-full_CapitalCommitmentsAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_NotLaterThanOneYearMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_LaterThanOneYearAndNotLaterThanThreeYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_LaterThanThreeYearsAndNotLaterThanFiveYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_LaterThanFiveYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_JointVenturesAxis=ifrs-full_JointVenturesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: