Condensed Financial Information of the Company - Condensed Balance Sheets (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of information about amounts recognised in balance sheet [Line Items]
Non-current assets	¥ 1,148,139	¥ 1,099,374
Current assets	579,743	529,866
Current liabilities	517,274	462,067
Total equity	1,152,772	1,107,289	¥ 1,055,809
Parent [member]
Disclosure of information about amounts recognised in balance sheet [Line Items]
Non-current assets	494,236	492,759
Current assets	2,183	2,262
Current liabilities	4,669	5,121
NET ASSETS	491,750	489,900
Total equity	¥ 491,750	¥ 489,900

Disclosure of information about amounts recognised in balance sheet.

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The amount of assets that the entity (a) expects to realise or intends to sell or consume in its normal operating cycle; (b) holds primarily for the purpose of trading; (c) expects to realise within twelve months after the reporting period; or (d) classifies as cash or cash equivalents (as defined in IAS 7) unless the asset is restricted from being exchanged or used to settle a liability for at least twelve months after the reporting period. [Refer: Assets]

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