v3.26.3
INVESTMENTS (Tables)
9 Months Ended
Sep. 30, 2026
Investments, Debt and Equity Securities [Abstract]  
Schedule of Financial Instruments by Significant Categories and Fair Value Measurement on a Recurring Basis
The following tables summarize our financial instruments by significant categories and fair value measurement on a recurring basis as of September 30, 2026 and December 31, 2025 and the amortized cost, gross unrealized gains, gross unrealized losses and fair value of our AFS investments:
(in millions)Fair Value LevelAmortized CostGross Unrealized GainsGross Unrealized LossesFair ValueCash and Cash EquivalentsInvestmentsRestricted Cash, Cash Equivalents and Investments
September 30, 2026
Cash equivalents:
Money market mutual fundsLevel 1$154 $— $— $154 $120 $— $34 
U.S. treasuriesLevel 263 — — 63 50 — 13 
Certificate of depositLevel 22 — — 2 — — 2 
Total cash equivalents219 — — 219170 — 49 
AFS Investments:
Corporate bondsLevel 235 — (1)34 — — 34 
Agency securitiesLevel 28 — — 8 — — 8 
U.S. treasuriesLevel 2233 — (4)229 — 50 179 
Certificate of depositLevel 25 — — 5 — — 5 
Total AFS Investments$281 $— $(5)$276 $— $50 $226 
(in millions)Fair Value LevelAmortized CostGross Unrealized GainsGross Unrealized LossesFair ValueCash and Cash EquivalentsRestricted Cash, Cash Equivalents and Investments
December 31, 2025
Cash equivalents:
Money market mutual fundsLevel 1$483 $— $— $483 $96 $387 
U.S. treasuriesLevel 22 — — 2— 2 
Total cash equivalents485 — — 48596 389 
AFS Investments:
Corporate bondsLevel 234 — — 34 — 34 
Agency securitiesLevel 211 — — 11 — 11 
U.S. treasuriesLevel 2160 2 — 162 — 162 
Total AFS Investments$205 $2 $— $207 $— $207 
Schedule of Fair Value of Debt Investments by Contractual Maturity
The fair value of debt investments by contractual maturity are shown below:
(in millions)September 30, 2026
One year or less$99 
Over one year through five years173 
Over five years through ten years4 
Total fair value$276 
Schedule of Available-for-Sale Securities
The gross proceeds from sales and maturities of AFS securities for the three and nine months ended September 30, 2026 and 2025 are presented below. We had immaterial gross realized gains and gross realized losses from sales of investments for the three and nine months ended September 30, 2026 and 2025.

Three Months Ended September 30,
Nine Months Ended September 30,
(in millions)
2026
2025
2026
2025
Gross proceeds from sales$11 $14 $64 $76 
Gross proceeds from maturities5 2 14 6