v3.25.2
Fair Value (Tables)
6 Months Ended
Jun. 30, 2025
Fair Value Disclosures [Abstract]  
Schedule of Fair value, by Balance Sheet Grouping
The following is a listing of our assets required to be measured at fair value on a recurring basis and where they are classified within the fair value hierarchy as of June 30, 2025 and December 31, 2024 (in millions):
June 30, 2025
Level 1Level 2Level 3Total
Assets
Cash equivalents$1,758 $— $— $1,758 
Restricted cash equivalents71 — — 71 
Available-for-sale investment securities— 878 885 
December 31, 2024
Level 1Level 2Level 3Total
Assets
Cash equivalents$1,921 $— $— $1,921 
Restricted cash equivalents89 — — 89 
Available-for-sale investment securities— 1,609 12 1,621 
Schedule of Debt Securities, Held-to-Maturity The carrying value and estimated fair value of our held-to-maturity investment securities were as follows (in millions):
June 30, 2025December 31, 2024
Carrying ValueFair ValueCarrying ValueFair Value
Held-to-maturity investment securities$342 $341 $404 $400