Debt and Financing Arrangements (Tables)

12 Months Ended

Apr. 30, 2021

Debt Disclosure [Abstract]

Schedule of long-term debt

The following table summarizes the components of our long-term debt.

	April 30, 2021				April 30, 2020
	Principal Outstanding		Carrying Amount (A)		Principal Outstanding		Carrying  Amount (A)
3.50% Senior Notes due October 15, 2021	$	750.0	$	753.5	$	750.0	$	761.1
3.00% Senior Notes due March 15, 2022	400.0		399.4		400.0		398.7
3.50% Senior Notes due March 15, 2025	1,000.0		996.8		1,000.0		996.0
3.38% Senior Notes due December 15, 2027	500.0		497.1		500.0		496.7
2.38% Senior Notes due March 15, 2030	500.0		495.7		500.0		495.2
4.25% Senior Notes due March 15, 2035	650.0		644.3		650.0		643.9
4.38% Senior Notes due March 15, 2045	600.0		587.1		600.0		586.5
3.55% Senior Notes due March 15, 2050	300.0		295.8		300.0		295.7
Term Loan Credit Agreement due May 14, 2021	—		—		700.0		699.5
Total long-term debt	$	4,700.0	$	4,669.7	$	5,400.0	$	5,373.3
Current portion of long-term debt	1,150.0		1,152.9		—		—
Total long-term debt, less current portion	$	3,550.0	$	3,516.8	$	5,400.0	$	5,373.3

(A)    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.