Debt and Financing Arrangements (Details) - USD ($) $ in Millions		Apr. 30, 2024	Apr. 30, 2023
Long-term debt
Debt instrument face amount		$ 7,850.0	$ 4,350.0
Total long-term debt	[1]	7,773.0	4,314.2
Current portion of long-term debt	[1]	999.3	0.0
Long-term debt, less current portion	[1]	$ 6,773.7	$ 4,314.2
3.50% Senior Notes due March 15, 2025
Long-term debt
Interest rate on notes		3.50%	3.50%
Debt instrument face amount		$ 1,000.0	$ 1,000.0
Senior Notes	[1]	$ 999.3	$ 998.4
3.38% Senior Notes due December 15, 2027
Long-term debt
Interest rate on notes		3.38%	3.38%
Debt instrument face amount		$ 500.0	$ 500.0
Senior Notes	[1]	$ 498.4	$ 498.0
5.90% Senior Notes due November 15, 2028
Long-term debt
Interest rate on notes		5.90%	5.90%
Debt instrument face amount		$ 750.0	$ 0.0
Senior Notes	[1]	$ 744.5	$ 0.0
2.38% Senior Notes due March 15, 2030
Long-term debt
Interest rate on notes		2.38%	2.38%
Debt instrument face amount		$ 500.0	$ 500.0
Senior Notes	[1]	$ 497.2	$ 496.7
2.13% Senior Notes due March 15, 2032
Long-term debt
Interest rate on notes		2.13%	2.13%
Debt instrument face amount		$ 500.0	$ 500.0
Senior Notes	[1]	$ 495.2	$ 494.4
6.20% Senior Notes due November 15, 2033
Long-term debt
Interest rate on notes		6.20%	6.20%
Debt instrument face amount		$ 1,000.0	$ 0.0
Senior Notes	[1]	$ 991.5	$ 0.0
4.25% Senior Notes due March 15, 2035
Long-term debt
Interest rate on notes		4.25%	4.25%
Debt instrument face amount		$ 650.0	$ 650.0
Senior Notes	[1]	$ 645.5	$ 645.1
2.75% Senior Notes due September 15, 2041
Long-term debt
Interest rate on notes		2.75%	2.75%
Debt instrument face amount		$ 300.0	$ 300.0
Senior Notes	[1]	$ 297.4	$ 297.3
6.50% Senior Notes due November 15, 2043
Long-term debt
Interest rate on notes		6.50%	6.50%
Debt instrument face amount		$ 750.0	$ 0.0
Senior Notes	[1]	$ 736.5	$ 0.0
4.38% Senior Notes due March 15, 2045
Long-term debt
Interest rate on notes		4.38%	4.38%
Debt instrument face amount		$ 600.0	$ 600.0
Senior Notes	[1]	$ 588.7	$ 588.2
3.55% Senior Notes due March 15, 2050
Long-term debt
Interest rate on notes		3.55%	3.55%
Debt instrument face amount		$ 300.0	$ 300.0
Senior Notes	[1]	$ 296.2	$ 296.1
6.50% Senior Notes due November 15, 2053
Long-term debt
Interest rate on notes		6.50%	6.50%
Debt instrument face amount		$ 1,000.0	$ 0.0
Senior Notes	[1]	982.6	0.0
Current portion of long-term debt
Long-term debt
Debt instrument face amount		1,000.0	0.0
Total long-term debt, less current portion
Long-term debt
Debt instrument face amount		$ 6,850.0	$ 4,350.0

[1] Represents the carrying amount included in the Consolidated Balance Sheets, which includes the impact of capitalized debt issuance costs, offering discounts, and terminated interest rate contracts.