Guarantor and Non-Guarantor Financial Information, Condensed Supplemental Consolidated Statements of Cash Flows (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Jul. 31, 2019	Sep. 28, 2019	Sep. 29, 2018	Sep. 30, 2017
Condensed Supplemental Consolidated Statements of Cash Flows [Abstract]
Cash flow from operating activities		$ 1,201	$ 1,004	$ 975
Cash Flow from Investing Activities [Abstract]
Additions to property, plant and equipment		(399)	(336)	(269)
Proceeds from sale of assets		0	3	6
Divestiture of business	$ 326	326	0	0
Acquisition of business		(6,079)	(702)	(515)
Acquisition purchase price derivatives and other		(99)	0	4
(Contributions) distributions to/from subsidiaries		0	0	0
Intercompany advances (repayments)		0	0	0
Net cash from investing activities		(6,251)	(1,035)	(774)
Cash Flow from Financing Activities [Abstract]
Proceeds from long-term borrowings		6,784	498	495
Repayment of long-term borrowings		(1,214)	(335)	(636)
Proceeds from issuance of common stock		55	23	31
Repurchase of common stock		(74)	(33)	0
Payment of tax receivable agreement		(38)	(37)	(111)
Debt financing costs		(87)	(3)	(5)
Changes in intercompany balances		0	0	0
Contribution from Parent		0	0	0
Net cash from financing activities		5,426	113	(226)
Effect of currency translation on cash		(7)	(7)	8
Net change in cash and cash equivalents		369	75	(17)
Cash and cash equivalents at beginning of period		381	306	323
Cash and cash equivalents at end of period		750	381	306
Eliminations [Member]
Condensed Supplemental Consolidated Statements of Cash Flows [Abstract]
Cash flow from operating activities		0	0	0
Cash Flow from Investing Activities [Abstract]
Additions to property, plant and equipment		0	0	0
Proceeds from sale of assets			0	0
Divestiture of business		0
Acquisition of business		0	0	0
Acquisition purchase price derivatives and other		0		0
(Contributions) distributions to/from subsidiaries		6,071	705	515
Intercompany advances (repayments)		(517)	(538)	(428)
Net cash from investing activities		5,554	167	87
Cash Flow from Financing Activities [Abstract]
Proceeds from long-term borrowings		0	0	0
Repayment of long-term borrowings		0	0	0
Proceeds from issuance of common stock		0	0	0
Repurchase of common stock		0	0
Payment of tax receivable agreement		0	0	0
Debt financing costs		0	0	0
Changes in intercompany balances		517	538	428
Contribution from Parent		(6,071)	(705)	(515)
Net cash from financing activities		(5,554)	(167)	(87)
Effect of currency translation on cash		0	0	0
Net change in cash and cash equivalents		0	0	0
Cash and cash equivalents at beginning of period		0	0	0
Cash and cash equivalents at end of period		0	0	0
Parent [Member]
Condensed Supplemental Consolidated Statements of Cash Flows [Abstract]
Cash flow from operating activities		0	0	0
Cash Flow from Investing Activities [Abstract]
Additions to property, plant and equipment		0	0	0
Proceeds from sale of assets			0	0
Divestiture of business		0
Acquisition of business		0	0	0
Acquisition purchase price derivatives and other		0		0
(Contributions) distributions to/from subsidiaries		19	10	(31)
Intercompany advances (repayments)		0	0	0
Net cash from investing activities		19	10	(31)
Cash Flow from Financing Activities [Abstract]
Proceeds from long-term borrowings		0	0	0
Repayment of long-term borrowings		0	0	0
Proceeds from issuance of common stock		55	23	31
Repurchase of common stock		(74)	(33)
Payment of tax receivable agreement		(38)	(37)	(111)
Debt financing costs		0	0	0
Changes in intercompany balances		38	37	111
Contribution from Parent		0	0	0
Net cash from financing activities		(19)	(10)	31
Effect of currency translation on cash		0	0	0
Net change in cash and cash equivalents		0	0	0
Cash and cash equivalents at beginning of period		0	0	0
Cash and cash equivalents at end of period		0	0	0
Issuer [Member]
Condensed Supplemental Consolidated Statements of Cash Flows [Abstract]
Cash flow from operating activities		89	133	128
Cash Flow from Investing Activities [Abstract]
Additions to property, plant and equipment		0	(5)	(19)
Proceeds from sale of assets			0	1
Divestiture of business		0
Acquisition of business		0	0	0
Acquisition purchase price derivatives and other		(99)		4
(Contributions) distributions to/from subsidiaries		(6,090)	(715)	(484)
Intercompany advances (repayments)		517	538	428
Net cash from investing activities		(5,672)	(182)	(70)
Cash Flow from Financing Activities [Abstract]
Proceeds from long-term borrowings		6,784	498	495
Repayment of long-term borrowings		(1,205)	(331)	(632)
Proceeds from issuance of common stock		0	0	0
Repurchase of common stock		0	0
Payment of tax receivable agreement		0	0	0
Debt financing costs		(87)	(3)	(5)
Changes in intercompany balances		0	0	0
Contribution from Parent		0	0	0
Net cash from financing activities		5,492	164	(142)
Effect of currency translation on cash		0	0	0
Net change in cash and cash equivalents		(91)	115	(84)
Cash and cash equivalents at beginning of period		133	18	102
Cash and cash equivalents at end of period		42	133	18
Guarantor Subsidiaries [Member]
Condensed Supplemental Consolidated Statements of Cash Flows [Abstract]
Cash flow from operating activities		693	651	647
Cash Flow from Investing Activities [Abstract]
Additions to property, plant and equipment		(235)	(241)	(209)
Proceeds from sale of assets			3	5
Divestiture of business		0
Acquisition of business		(8)	(632)	(515)
Acquisition purchase price derivatives and other		0		0
(Contributions) distributions to/from subsidiaries		0	0	0
Intercompany advances (repayments)		0	0	0
Net cash from investing activities		(243)	(870)	(719)
Cash Flow from Financing Activities [Abstract]
Proceeds from long-term borrowings		0	0	0
Repayment of long-term borrowings		(7)	(3)	(3)
Proceeds from issuance of common stock		0	0	0
Repurchase of common stock		0	0
Payment of tax receivable agreement		0	0	0
Debt financing costs		0	0	0
Changes in intercompany balances		(445)	(418)	(433)
Contribution from Parent		0	632	515
Net cash from financing activities		(452)	211	79
Effect of currency translation on cash		0	0	0
Net change in cash and cash equivalents		(2)	(8)	7
Cash and cash equivalents at beginning of period		4	12	5
Cash and cash equivalents at end of period		2	4	12
Non-Guarantor Subsidiaries [Member]
Condensed Supplemental Consolidated Statements of Cash Flows [Abstract]
Cash flow from operating activities		419	220	200
Cash Flow from Investing Activities [Abstract]
Additions to property, plant and equipment		(164)	(90)	(41)
Proceeds from sale of assets			0	0
Divestiture of business		326
Acquisition of business		(6,071)	(70)	0
Acquisition purchase price derivatives and other		0		0
(Contributions) distributions to/from subsidiaries		0	0	0
Intercompany advances (repayments)		0	0	0
Net cash from investing activities		(5,909)	(160)	(41)
Cash Flow from Financing Activities [Abstract]
Proceeds from long-term borrowings		0	0	0
Repayment of long-term borrowings		(2)	(1)	(1)
Proceeds from issuance of common stock		0	0	0
Repurchase of common stock		0	0
Payment of tax receivable agreement		0	0	0
Debt financing costs		0	0	0
Changes in intercompany balances		(110)	(157)	(106)
Contribution from Parent		6,071	73	0
Net cash from financing activities		5,959	(85)	(107)
Effect of currency translation on cash		(7)	(7)	8
Net change in cash and cash equivalents		462	(32)	60
Cash and cash equivalents at beginning of period		244	276	216
Cash and cash equivalents at end of period		$ 706	$ 244	$ 276