Interest in joint ventures (Tables)

12 Months Ended

Dec. 31, 2019

Disclosure of joint ventures [line items]

Summary of Principal Joint Ventures

	2019		2018
	RMB million		RMB million
Share of net assets		3,124		2,812

All the Group’s joint ventures are unlisted without quoted market price. The particulars of the Group’s principal joint ventures as at December 31, 2019 are as follows:

						Proportion of ownership interest held by
	Place of establishment/ operation		Group’s effective interest			The Company			Subsidiaries		Proportion of voting rights held by the Group			Principal activity
Guangzhou Aircraft Maintenance Engineering Co., Ltd. (“GAMECO”)		PRC		50	%		50	%		—		50	%	Aircraft repair and maintenance services
MTU Maintenance Zhuhai Co. Ltd. (“MTU”)		PRC		50	%		50	%		—		50	%	Aircraft repair and maintenance services

Aggregated individually immaterial joint ventures [member]

Disclosure of joint ventures [line items]

Summarized Financial Information

The Group has interest in a number of individually immaterial joint ventures that are accounted for using the equity method. The aggregate financial information of these joint ventures is summarized as follows:

	2019		2018		2017
	RMB million		RMB million		RMB million
Aggregate carrying amount of individually immaterial joint ventures		3,124		2,812		1,015
Aggregate amounts of the Group’s share of:
Profit from continuing operations and total comprehensive income		365		200		99