Financing Arrangement (Senior Notes) (Details) - USD ($) $ in Millions		3 Months Ended
	Feb. 04, 2016	Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2022		Feb. 28, 2022	Feb. 11, 2021	Feb. 24, 2016
Debt Instrument [Line Items]
Proceeds from Issuance of Senior Long-term Debt	$ 395
Amortization of Debt Discount (Premium)		$ 6
Senior Notes, Noncurrent		1,878		$ 1,878	[1]
Interest Expense		14	$ 14
Senior Notes		1,878		1,878
Proceeds from Debt, Net of Issuance Costs		1,478
Debt Issuance Costs, Gross		16
2026 Notes
Debt Instrument [Line Items]
Long-term Debt		$ 400		400				$ 400
Debt Instrument, Interest Rate, Stated Percentage								4.80%
Debt Instrument, Maturity Date	Mar. 01, 2026
Effective interest rate								4.97%
Debt Instrument, Convertible, Remaining Discount Amortization Period		3 years 8 months 12 days
Senior Notes
Debt Instrument [Line Items]
Long-term Debt		$ 1,900		1,900
Debt Instrument, Unamortized Discount (Premium), Net		(6)		(6)				$ (1)
Debt Issuance Costs, Noncurrent, Net		16		16				$ 4
Senior Notes, Frequency of Periodic Payment	semiannually
Debt Instrument, Fair Value Disclosure		$ 1,584		1,711
Debt Instrument, Redemption Price, Percentage		100.00%
Change of control repurchase event
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage		101.00%
2031 Notes
Debt Instrument [Line Items]
Long-term Debt		$ 750		750			$ 750
Debt Instrument, Interest Rate, Stated Percentage							1.85%
Debt Instrument, Maturity Date		Feb. 15, 2031
Effective interest rate						1.98%
Debt Instrument, Convertible, Remaining Discount Amortization Period		8 years 7 months 6 days
2051 Notes
Debt Instrument [Line Items]
Long-term Debt		$ 750		$ 750			$ 750
Debt Instrument, Interest Rate, Stated Percentage							2.95%
Debt Instrument, Maturity Date		Feb. 15, 2051
Effective interest rate						3.04%
Debt Instrument, Convertible, Remaining Discount Amortization Period		28 years 7 months 6 days

[1] Derived from audited Consolidated Financial Statements.