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Share-based Compensation - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2026	Apr. 30, 2026	Jan. 31, 2026
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock reserved for future issuance (in shares)	16,061,573		19,000,000
RSUs
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Award vesting period	3 years
Unrecognized pretax compensation expense	$ 105
Weighted-average period of recognition	2 years 6 months
PSUs
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Continued employment requirement	3 years
Fair value assumption, expected volatility rate	30.50%
Fair value assumption, risk free interest rate	4.10%
Unrecognized pretax compensation expense	$ 27
Weighted-average period of recognition	2 years 3 months 18 days
Employee Stock
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Employee Stock Purchase Plan, number of shares authorized (in shares)		2,000,000