Retirement Benefit Plans - Components of Net Periodic Benefit Cost (Details) - Pension plans - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jan. 28, 2022	Jan. 29, 2021	Jan. 28, 2022	Jan. 29, 2021
U.S.
Net Periodic Benefit Cost
Service cost	$ 25	$ 26	$ 75	$ 80
Interest cost	26	28	78	82
Expected return on plan assets	(57)	(60)	(171)	(182)
Amortization of net actuarial loss	16	17	48	52
Special termination benefits			0	80
Net periodic benefit cost	10	11	30	112
Non-U.S.
Net Periodic Benefit Cost
Service cost	16	17	48	51
Interest cost	7	7	21	20
Expected return on plan assets	(16)	(13)	(48)	(41)
Amortization of net actuarial loss	5	6	15	18
Special termination benefits			0	0
Net periodic benefit cost	$ 12	$ 17	$ 36	$ 48