Notes outstanding related to the Company's Commercial Paper Program at the balance sheet date.

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Line of Credit Facility, Maximum Borrowing Capacity, Commitments On Effective Date

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The maximum period during which the commercial paper note becomes due and is repaid to the investor and interest payments stop.

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Maximum amount of aggregate principal of commercial paper notes that the Company may issue.

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Reflects calculation as of the balance sheet date of the average interest rate weighted by the amount of short-term debt outstanding by type or by instrument at the time.

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Face (par) amount of debt instrument at time of issuance.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The effective interest rate at the end of the reporting period.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

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Number of new stock issued during the period.

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Financing Arrangements (Details) - USD ($)		1 Months Ended		3 Months Ended	12 Months Ended
Financing Arrangements (Details) - USD ($)	Dec. 30, 2019	Nov. 30, 2019	Sep. 29, 2019	Dec. 27, 2020	Dec. 27, 2020	Dec. 29, 2019	Sep. 27, 2020	Sep. 30, 2019
Short-term Debt [Abstract]
Commercial paper program, notes outstanding				$ 0	$ 0
Common stock, shares issued (in shares)		10,592,000		10,592,000
Public offering price (in dollars per share)		$ 95.00		$ 95.00	$ 95.00
Line of credit facility, interest rate at period end				137.50%	137.50%
Maturities of the notes, maximum					397 days
Unsecured committed
Short-term Debt [Abstract]
Line of credit facility, unused capacity, commitment fee percentage					0.175%
Maximum aggregate principal amount of commercial paper notes issuable by the Company					$ 1,000,000,000
Unsecured Uncommitted
Short-term Debt [Abstract]
Weighted average interest rates of outstanding borrowings					3.80%	16.00%
Line of Credit \| Revolving Credit Facility \| Unsecured committed
Short-term Debt [Abstract]
Line of credit facility, maximum borrowing capacity				$ 1,500,000,000	$ 1,500,000,000
Line of Credit \| Revolving Credit Facility \| Unsecured Uncommitted
Short-term Debt [Abstract]
Line of credit facility, maximum borrowing capacity				147,000,000	147,000,000
Line of Credit \| Revolving Credit Facility \| Bank of America Syndicate
Short-term Debt [Abstract]
Line of credit facility, maximum borrowing capacity							$ 1,500,000,000
Potential additional commitment increase							$ 500,000,000
Unsecured Debt \| Term Loan Agreement
Short-term Debt [Abstract]
Debt instrument, face amount		$ 975,185,000		1,000,000,000	1,000,000,000			$ 1,000,000
Borrowings	$ 1,000,000,000.0
Unsecured Debt \| Three-Year Term Loan Facility
Short-term Debt [Abstract]
Debt instrument, face amount				400,000,000	$ 400,000,000			400,000,000
Debt instrument term			3 years		3 years
Unsecured Debt \| Five-Year Term Loan Facility
Short-term Debt [Abstract]
Debt instrument, face amount				600,000,000	$ 600,000,000			$ 600,000,000
Debt instrument term			5 years		5 years
Senior Notes \| Senior Unsecured Notes
Short-term Debt [Abstract]
Debt instrument, face amount		$ 2,375,000,000		$ 2,375,000,000	$ 2,375,000,000