Financing - Schedule of Debt (Parenthetical) (Detail)	3 Months Ended
	Nov. 21, 2020
2.500% Senior Notes due April 2021, effective interest rate of 2.62% [Member]
Debt Instrument [Line Items]
Stated interest rate percentage	2.50%
Debt instrument maturity, month and year	2021-04
Effective interest rate	2.62%
3.700% Senior Notes due April 2022, effective interest rate of 3.85% [Member]
Debt Instrument [Line Items]
Stated interest rate percentage	3.70%
Debt instrument maturity, month and year	2022-04
Effective interest rate	3.85%
2.875% Senior Notes due January 2023, effective interest rate of 3.21% [Member]
Debt Instrument [Line Items]
Stated interest rate percentage	2.875%
Debt instrument maturity, month and year	2023-01
Effective interest rate	3.21%
3.125% Senior Notes due July 2023, effective interest rate of 3.26% [Member]
Debt Instrument [Line Items]
Stated interest rate percentage	3.125%
Debt instrument maturity, month and year	2023-07
Effective interest rate	3.26%
3.125% Senior Notes due April 2024, effective interest rate 3.32%
Debt Instrument [Line Items]
Stated interest rate percentage	3.125%
Debt instrument maturity, month and year	2024-04
Effective interest rate	3.32%
3.250% Senior Notes due April 2025, effective interest rate 3.36% [Member]
Debt Instrument [Line Items]
Stated interest rate percentage	3.25%
Debt instrument maturity, month and year	2025-04
Effective interest rate	3.36%
3.625% Senior Notes due April 2025, effective interest rate 3.78%
Debt Instrument [Line Items]
Stated interest rate percentage	3.625%
Debt instrument maturity, month and year	2025-04
Effective interest rate	3.78%
3.125% Senior Notes due April 2026, effective interest rate of 3.28% [Member]
Debt Instrument [Line Items]
Stated interest rate percentage	3.125%
Debt instrument maturity, month and year	2026-04
Effective interest rate	3.28%
3.750% Senior Notes due June 2027, effective interest rate of 3.83% [Member]
Debt Instrument [Line Items]
Stated interest rate percentage	3.75%
Debt instrument maturity, month and year	2027-06
Effective interest rate	3.83%
3.750% Senior Notes due April 2029, effective interest rate of 3.86%
Debt Instrument [Line Items]
Stated interest rate percentage	3.75%
Debt instrument maturity, month and year	2029-04
Effective interest rate	3.86%
4.000% Senior Notes due April 2030, effective interest rate 4.09%
Debt Instrument [Line Items]
Stated interest rate percentage	4.00%
Debt instrument maturity, month and year	2030-04
Effective interest rate	4.09%
1.650% Senior Notes due January 2031, effective interest rate of 2.19%
Debt Instrument [Line Items]
Stated interest rate percentage	1.65%
Debt instrument maturity, month and year	2031-01
Effective interest rate	2.19%