Borrowings - Schedule of Senior Notes (Details) - USD ($) $ in Millions	Jun. 30, 2022	Jun. 30, 2021
Debt Instrument [Line Items]
Total public debt	$ 7,250	$ 8,000
Less: unamortized discount and debt issuance costs	(44)	(49)
Total borrowings	7,206	$ 7,951
Senior notes
Debt Instrument [Line Items]
Stated interest rate of debt instrument		3.666%
Senior notes \| 3.666% senior notes due 2022
Debt Instrument [Line Items]
Total public debt	$ 0	$ 750
Stated interest rate of debt instrument	3.666%
Senior notes \| 4.030% senior notes due 2024
Debt Instrument [Line Items]
Total public debt	$ 1,250	1,250
Stated interest rate of debt instrument	4.03%
Senior notes \| 3.050% senior notes due 2025
Debt Instrument [Line Items]
Total public debt	$ 600	600
Stated interest rate of debt instrument	3.05%
Senior notes \| 4.709% senior notes due 2029
Debt Instrument [Line Items]
Total public debt	$ 2,000	2,000
Stated interest rate of debt instrument	4.709%
Senior notes \| 3.500% senior notes due 2030
Debt Instrument [Line Items]
Total public debt	$ 600	600
Stated interest rate of debt instrument	3.50%
Senior notes \| 5.476% senior notes due 2039
Debt Instrument [Line Items]
Total public debt	$ 1,250	1,250
Stated interest rate of debt instrument	5.476%
Senior notes \| 5.576% senior notes due 2049
Debt Instrument [Line Items]
Total public debt	$ 1,550	$ 1,550
Stated interest rate of debt instrument	5.576%

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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