Acquisitions and Divestitures (Narrative) (Details)		3 Months Ended				9 Months Ended
	Dec. 31, 2017 USD ($)	Jul. 01, 2018 USD ($) store	Apr. 01, 2018 USD ($)	Oct. 01, 2017 USD ($)	Jul. 02, 2017 USD ($)	Jul. 01, 2018 USD ($) store	Jul. 02, 2017 USD ($)
Business Acquisition [Line Items]
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months		$ 58,600,000			$ 14,300,000	$ 131,400,000	$ 42,800,000
Gain resulting from acquisition of joint venture		2,500,000			0	1,376,400,000	0
Goodwill		3,647,600,000		$ 1,539,200,000		3,647,600,000
Brazil Retail Operations [Member]
Business Acquisition [Line Items]
Sale of Ownership Interest in Retail Business			$ 48,200,000
Gain/(loss) resulting from divestiture			8.5
Taiwan JV [Member]
Business Acquisition [Line Items]
Sale of Ownership Interest in Retail Business			$ 181,200,000
Gain/(loss) resulting from divestiture			156.6
East China JV [Member]
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue		6,310,300			5,896,500	18,686,800	17,360,600
Business Acquisition, Effective Date of Acquisition	Dec. 31, 2017
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months		44,300,000				88,800,000
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year		42,700,000				42,700,000
Finite-Lived Intangible Assets, Amortization Expense, Rolling Year Two		170,700,000				170,700,000
Finite-Lived Intangible Assets, Amortization Expense, Rolling Year Two		170,700,000				170,700,000
Finite-Lived Intangible Assets, Amortization Expense, Rolling Year Four		170,700,000				170,700,000
Finite-Lived Intangible Assets, Amortization Expense, Rolling Year Five		163,800,000				163,800,000
Goodwill, Foreign Currency Translation Gain (Loss)		37,900,000
Preexisting ownership percentage in equity method investment			50.00%
Amount paid for interest acquired			$ 1,400,000,000
Amount of payable settled	$ 1,440,800,000
Gain resulting from acquisition of joint venture		1,400,000,000			0		1,400,000,000
Acquisition-related costs, including integration costs					18,300,000		30,700,000
Business Combination, Acquisition Related Costs						$ 3,500,000
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value	1,440,800,000	$ 1,400,000,000
Business Combination, Separately Recognized Transactions, Liabilities Recognized			$ 90,500,000
Number of stores | store		1,400				1,400
Business Combination, Consideration Transferred, Including Equity Interest in Acquiree Held Prior to Combination	2,972,100,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	129,500,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables	14,300,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory	16,100,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets	20,600,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	254,100,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets	44,600,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	818,000,000
Goodwill	2,164,100,000	$ 2,126,200,000				$ 2,126,200,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	3,461,300,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable	34,700,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	187,700,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Deferred Revenue	21,700,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities	245,100,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	489,200,000
Operating Leases, Future Minimum Payments Due, Next Twelve Months		69,800,000				69,800,000
Operating Leases, Future Minimum Payments, Due in Rolling Year Two		60,800,000				60,800,000
Operating Leases, Future Minimum Payments, Due in Rolling Year Three		52,700,000				52,700,000
Operating Leases, Future Minimum Payments, Due in Rolling Year Four		45,100,000				45,100,000
Operating Leases, Future Minimum Payments, Due in Rolling Year Five		35,900,000				35,900,000
Operating Leases, Future Minimum Payments, Due Thereafter		78,300,000				78,300,000
Operating Leases, Future Minimum Payments Due		342,600,000				342,600,000
Business Acquisition, Pro Forma Net Income (Loss)		802,900			$ 773,100	2,494,500	$ 3,331,600
East China revenue included in consolidated statements of earnings		301,000,000				602,600,000
East China net earnings included in consolidated statements of earnings		$ 19,200,000				$ 45,500,000
Tazo business [Member]
Business Acquisition [Line Items]
Gain/(loss) resulting from divestiture			347.9
Proceeds from Divestiture of Businesses			$ 383,800,000
Taiwan JV [Member]
Business Acquisition [Line Items]
Preexisting ownership percentage in equity method investment			50.00%
Singapore Retail Operations [Member]
Business Acquisition [Line Items]
Sale of Ownership Interest in Retail Business				$ 119,900,000
Gain/(loss) resulting from divestiture				83.9
Acquired and reacquired rights | East China JV [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	$ 798,000,000