v3.24.3
Fair Value Measurements and Investments (Tables)
 12 Months Ended
Sep. 30, 2024
Fair Value Disclosures [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Fair Value Measurements as of September 30
Using Inputs Considered as
Level 1Level 2
2024202320242023
(in millions)
Assets
Cash equivalents and restricted cash equivalents:
Money market funds$10,403 $13,504 $— $— 
U.S. Treasury securities7 301 — — 
Investment securities:
Marketable equity securities301 339 — — 
U.S. government-sponsored debt securities— — 496 1,108 
U.S. Treasury securities4,948 4,316 — — 
Other current and non-current assets:
Money market funds25 23 — — 
Derivative instruments— — 103 293 
Total $15,684 $18,483 $599 $1,401 
Liabilities
Accrued compensation and benefits:
Deferred compensation liability$238 $175 $— $— 
Accrued and other liabilities:
Derivative instruments— — 226 396 
Total $238 $175 $226 $396 
Schedule of Amortized Cost, Unrealized Gains and Losses, and Fair Value of Debt Securities
The amortized cost, unrealized gains and losses and fair value of debt securities were as follows:
September 30, 2024
Amortized
Cost		Gross UnrealizedFair
Value
GainsLosses
(in millions)
U.S. government-sponsored debt securities$492 $4 $— $496 
U.S. Treasury securities4,920 40 (5)4,955 
Total$5,412 $44 $(5)$5,451 
September 30, 2023
Amortized
Cost		Gross UnrealizedFair
Value
GainsLosses
(in millions)
U.S. government-sponsored debt securities$1,109 $1 $(2)$1,108 
U.S. Treasury securities4,697 — (80)4,617 
Total$5,806 $1 $(82)$5,725 
Debt securities with unrealized losses for less than 12 months and 12 months or greater were as follows:
September 30, 2024
Less Than 12 Months12 Months or Greater
Fair ValueGross Unrealized LossesFair ValueGross Unrealized Losses
(in millions)
U.S. government-sponsored debt securities$— $— $164 $— 
U.S. Treasury securities— — 1,019 (5)
Total$— $— $1,183 $(5)
September 30, 2023
Less Than 12 Months12 Months or Greater
Fair ValueGross Unrealized LossesFair ValueGross Unrealized Losses
(in millions)
U.S. government-sponsored debt securities$412 $(2)$50 $— 
U.S. Treasury securities1,360 (12)2,128 (68)
Total$1,772 $(14)$2,178 $(68)
Schedule of Debt Securities Classified by Contractual Maturity Date
The stated maturities of debt securities were as follows:
September 30,
2024
 (in millions)
Due within one year$2,968 
Due after one year through five years
2,483 
Total$5,451 
Schedule of Non-Marketable Equity Securities
The following table summarizes the Company’s non-marketable equity securities held as of period end that were accounted for using the fair value measurement alternative:
September 30,
20242023
(in millions)
Initial cost basis$711 $719 
Adjustments:
Upward adjustments910 899 
Downward adjustments, including impairment(465)(445)
Carrying amount$1,156 $1,173 
Unrealized gains and losses of the Company’s non-marketable equity securities held as of period end that were accounted for using the fair value measurement alternative were as follows:
For the Years Ended
September 30,
202420232022
(in millions)
Upward adjustments$10 $94 $231 
Downward adjustments, including impairment
$(35)$(99)$(341)
Schedule of Investment Income
Investment income (expense) consisted of the following:
 For the Years Ended
September 30,
 202420232022
 (in millions)
Interest and dividend income on cash and investments$992 $745 $69 
Gains (losses) on investments, net
(44)(82)(296)
Investment income (expense)$948 $663 $(227)