Taxation - Summary of Movements of Deferred Income Tax Assets (Details) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]
Beginning balance	¥ 483
Ending balance	557	¥ 483
Deferred Tax Assets
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]
Beginning balance	483	427
Credited/(charged) to income statement	74	56
Ending balance	557	483
Prepayment and Other Investments \| Deferred Tax Assets
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]
Beginning balance	158	144
Credited/(charged) to income statement	37	14
Ending balance	195	158
Deferred Revenue \| Deferred Tax Assets
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]
Beginning balance	29	17
Credited/(charged) to income statement	(14)	12
Ending balance	43	29
Accruals \| Deferred Tax Assets
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]
Beginning balance	185	177
Credited/(charged) to income statement	14	8
Ending balance	199	185
Lease Liabilities \| Deferred Tax Assets
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]
Beginning balance	61	76
Credited/(charged) to income statement	(4)	(15)
Ending balance	65	61
Others \| Deferred Tax Assets
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]
Beginning balance	50	13
Credited/(charged) to income statement	5	37
Ending balance	¥ 55	¥ 50