SEGMENT REPORTING - Operating income from segment (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2025 CNY (¥)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 CNY (¥)	Dec. 31, 2023 CNY (¥)
SEGMENT REPORTING
Total net revenues	¥ 49,288,095	$ 7,034,825	¥ 34,474,814	¥ 24,903,166
Depreciation and amortization expenses	(1,557,383)	(222,283)	(1,190,037)	(604,580)
Operating income	5,072,935	724,053	3,570,069	3,020,423
PRC Segment \| Operating segment
SEGMENT REPORTING
Total net revenues	49,003,619	6,994,222	34,336,827	24,870,496
Depreciation and amortization expenses	(1,535,095)	(219,102)	(1,177,234)	(600,914)
Operating income	¥ 5,253,819	$ 749,870	¥ 3,501,834	¥ 3,078,018

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

The net result for the period of deducting operating expenses from operating revenues.

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+ Details

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details