Debt (Senior Credit Facilities Narrative) (Details) ¥ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2025 CNY (¥)	Oct. 20, 2025 CNY (¥)	Aug. 11, 2025 USD ($)	Apr. 11, 2025 CNY (¥)
Revolving Credit Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity | $			$ 1,750
Revolving Credit Facility | Revolving Credit Facility | Minimum | Variable Interbank Interest Rate
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.00%
Revolving Credit Facility | Revolving Credit Facility | Minimum | Base Rate
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.00%
Revolving Credit Facility | Revolving Credit Facility | Maximum | Variable Interbank Interest Rate
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.00%
Revolving Credit Facility | Revolving Credit Facility | Maximum | Base Rate
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.00%
China Revolving Credit Facilities | CSIT Revolving Credit Agreement
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	¥ 550
China Revolving Credit Facilities | CNCC 3-Year Working Capital Loan Agreement
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		¥ 300
China Revolving Credit Facility | CNCC Revolving Credit Agreement
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity				¥ 100