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Amount of short-term and long-term debt and lease obligation.

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Face (par) amount of debt instrument at time of issuance.

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

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Fair value amount of debt instrument that was repurchased.

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Face (par) amount of the original debt instrument that was repurchased.

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Amount, after accumulated amortization, of debt premium.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Amount of cash paid for interest, including, but not limited to, capitalized interest and payment to settle zero-coupon bond attributable to accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount; classified as operating and investing activities.

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Amount of long-term debt and lease obligation, classified as current.

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Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest.

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Debt and Financing Activities - Long-Term Debt Narrative (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
	Jul. 23, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 15, 2022	Mar. 31, 2022
Debt Instrument [Line Items]
Long-term debt		$ 5,856		$ 5,856			$ 5,879
Current portion of long-term debt		404		404			$ 799
Payments for debt extinguishments				0	$ 184
Loss on debt extinguishment		$ 0	$ 0	$ 0	$ (191)
2.70% Notes due December 15, 2022 \| Term Loan
Debt Instrument [Line Items]
Interest rate on debt instrument (percent)		2.70%		2.70%		2.70%
Debt principal amount						$ 400
2.85% Notes due March 15, 2023 \| Term Loan
Debt Instrument [Line Items]
Interest rate on debt instrument (percent)	2.85%	2.85%		2.85%
3.80% Notes due March 15, 2024 \| Term Loan
Debt Instrument [Line Items]
Interest rate on debt instrument (percent)	3.80%	3.80%		3.80%
7.65% Debentures due March 1, 2027 \| Term Loan
Debt Instrument [Line Items]
Interest rate on debt instrument (percent)	7.65%	7.65%		7.65%
3.95% Notes due February 16, 2028 \| Term Loan
Debt Instrument [Line Items]
Interest rate on debt instrument (percent)	3.95%	3.95%		3.95%
4.75% Notes due May 30, 2029 \| Term Loan
Debt Instrument [Line Items]
Interest rate on debt instrument (percent)	4.75%	4.75%		4.75%
6.00% Notes due March 1, 2041 \| Term Loan
Debt Instrument [Line Items]
Interest rate on debt instrument (percent)	6.00%	6.00%		6.00%
4.88% Notes due March 15, 2044 \| Term Loan
Debt Instrument [Line Items]
Interest rate on debt instrument (percent)	4.88%	4.88%		4.88%
Tender Offer Notes \| Term Loan
Debt Instrument [Line Items]
Aggregate consideration of debt redeemed	$ 1,100
Debt principal redeemed	$ 922
Redemption price percentage of principal (percent)	100.00%
Payments for debt extinguishments	$ 182
Accrued unpaid interest	14
Loss on debt extinguishment	191
Debt premiums	182
Write-off of unamortized debt issuance costs and transaction fees	$ 9