Investments Accounted for Using Equity Method - Summary of Movement of Investments in Associates and Joint Ventures (Parenthetical) (Details) - CNY (¥) ¥ in Millions	6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025	Dec. 31, 2024
Investment Accounted For Using Equity Method [Line Items]
Investments accounted for using equity method	¥ 2,691	¥ 1,859	¥ 1,659	¥ 4,669
Total for all associates [member]
Investment Accounted For Using Equity Method [Line Items]
Impairment loss	0	¥ 0
Total for all associates [member] \| Financial assets at fair value through other comprehensive income, category [member]
Investment Accounted For Using Equity Method [Line Items]
Investments accounted for using equity method	¥ 954

The amount of investments accounted for using the equity method. The equity method is a method of accounting whereby the investment is initially recognised at cost and adjusted thereafter for the post-acquisition change in the investor's share of net assets of the investee. The investor's profit or loss includes its share of the profit or loss of the investee. The investor's other comprehensive income includes its share of the other comprehensive income of the investee. [Refer: At cost [member]]