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Investments (Tables)
 9 Months Ended
Sep. 30, 2025
Investments, Debt and Equity Securities [Abstract]  
Schedule of Available-For-Sale Investments
The amortized cost, gross unrealized gains, gross unrealized losses and fair values of interest-bearing securities, which are classified as available for sale, by type of security were as follows (in millions):
Types of securities as of September 30, 2025Amortized
cost		Gross
unrealized
gains		Gross
unrealized
losses		Fair
values
U.S. Treasury bills$998 $— $— $998 
Money market mutual funds7,581 — — 7,581 
Other short-term interest-bearing securities129 — — 129 
Total interest-bearing securities$8,708 $— $— $8,708 
Types of securities as of December 31, 2024Amortized
cost		Gross
unrealized
gains		Gross
unrealized
losses		Fair
values
U.S. Treasury bills$997 $— $— $997 
Money market mutual funds10,354 — — 10,354 
Other short-term interest-bearing securities135 — — 135 
Total interest-bearing securities$11,486 $— $— $11,486 
Schedule of Fair Values by Classification
The fair values of interest-bearing securities by location in the Condensed Consolidated Balance Sheets were as follows (in millions):
Condensed Consolidated Balance Sheets locationsSeptember 30, 2025December 31, 2024
Cash and cash equivalents$8,708 $11,486 
Total interest-bearing securities$8,708 $11,486