Debt - Schedule of Debt (Details)	Jun. 30, 2023 USD ($)	Jun. 30, 2023 EUR (€)	Mar. 31, 2023 USD ($)
Short-term debt and current maturities of long-term debt
Commercial paper	$ 349,000,000		$ 109,000,000
Current maturities of long-term debt	137,000,000		176,000,000
Current maturities of finance lease liabilities	208,000,000		215,000,000
Short-term debt and current maturities of long-term debt	694,000,000		500,000,000
Long-term debt, net of current maturities
Finance lease liabilities	475,000,000		502,000,000
Long-term debt	4,236,000,000		4,291,000,000
Less: current maturities	345,000,000		391,000,000
Long-term debt, net of current maturities	3,891,000,000		3,900,000,000
Senior notes
Long-term debt, net of current maturities
Long-term debt, net of current maturities	3,532,000,000		3,523,000,000
Unamortized debt (discount) premiums and deferred debt issuance costs	$ 21,000,000		22,000,000
Finance lease liabilities | Minimum
Debt Information [Abstract]
Effective interest rate	0.00%	0.00%
Finance lease liabilities | Maximum
Debt Information [Abstract]
Effective interest rate	14.59%	14.59%
Borrowings for assets acquired under long-term financing
Long-term debt, net of current maturities
Long-term debt, net of current maturities	$ 248,000,000		285,000,000
Borrowings for assets acquired under long-term financing | Minimum
Debt Information [Abstract]
Effective interest rate	0.00%	0.00%
Borrowings for assets acquired under long-term financing | Maximum
Debt Information [Abstract]
Effective interest rate	9.78%	9.78%
Other borrowings
Long-term debt, net of current maturities
Long-term debt, net of current maturities	$ 2,000,000		3,000,000
Commercial paper
Long-term debt, net of current maturities
Amount of multi-year committed revolving credit facility | €		€ 1,000,000,000
Commercial paper | Minimum
Debt Information [Abstract]
Weighted average interest rate	3.56%	3.56%
Commercial paper | Maximum
Debt Information [Abstract]
Weighted average interest rate	4.03%	4.03%
Current maturities of finance lease liabilities | Minimum
Debt Information [Abstract]
Effective interest rate	0.00%	0.00%
Current maturities of finance lease liabilities | Maximum
Debt Information [Abstract]
Effective interest rate	14.59%	14.59%
€650 million Senior notes | Senior notes
Debt Information [Abstract]
Face amount | €		€ 650,000,000
Effective interest rate	1.75%	1.75%
Long-term debt, net of current maturities
Long-term debt, net of current maturities	$ 707,000,000		704,000,000
$700 million Senior notes | Senior notes
Debt Information [Abstract]
Face amount	$ 700,000,000
Effective interest rate	1.80%	1.80%
Long-term debt, net of current maturities
Long-term debt, net of current maturities	$ 696,000,000		696,000,000
€750 million Senior notes | Senior notes
Debt Information [Abstract]
Face amount | €		€ 750,000,000
Effective interest rate	0.45%	0.45%
Long-term debt, net of current maturities
Long-term debt, net of current maturities	$ 814,000,000		810,000,000
$650 million Senior notes | Senior notes
Debt Information [Abstract]
Face amount	$ 650,000,000
Effective interest rate	2.375%	2.375%
Long-term debt, net of current maturities
Long-term debt, net of current maturities	$ 645,000,000		645,000,000
€600 million Senior notes | Senior notes
Debt Information [Abstract]
Face amount | €		€ 600,000,000
Effective interest rate	0.95%	0.95%
Long-term debt, net of current maturities
Long-term debt, net of current maturities	$ 649,000,000		$ 646,000,000