Acquisitions and Divestitures (Narrative) (Details) - USD ($)		3 Months Ended			12 Months Ended
	Dec. 31, 2017	Dec. 30, 2018	Apr. 01, 2018	Dec. 31, 2017	Dec. 30, 2018	Sep. 30, 2018
Business Acquisition [Line Items]
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months		$ 54,500,000		$ 14,000,000
Gain resulting from acquisition of joint venture		0		1,326,300,000
Goodwill		3,560,300,000			$ 3,560,300,000	$ 3,541,600,000
Finite-Lived Intangible Assets, Accumulated Amortization		431,000,000			431,000,000	371,000,000
Deconsolidation, Gain (Loss), Amount		0		501,200,000
Brazil Retail Operations [Member]
Business Acquisition [Line Items]
Sale of Ownership Interest in Retail Business			$ 48,200,000
Taiwan JV [Member]
Business Acquisition [Line Items]
Sale of Ownership Interest in Retail Business			181,200,000
Deconsolidation, Gain (Loss), Amount			$ 156,600,000
East China JV [Member]
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue		6,344,700
Business Acquisition, Effective Date of Acquisition	Dec. 31, 2017
Goodwill, Foreign Currency Translation Gain (Loss)					117,700,000
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
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value	1,440,800,000
Business Combination, Separately Recognized Transactions, Liabilities Recognized	90,500,000			90,500,000
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			129,500,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables	14,300,000			14,300,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory	16,100,000			16,100,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets	20,600,000			20,600,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	254,100,000			254,100,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets	44,600,000			44,600,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	818,000,000			818,000,000
Goodwill	2,164,100,000	2,000,000,000		2,164,100,000	2,000,000,000
Finite-Lived Intangible Assets, Accumulated Amortization		163,600,000			163,600,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	3,461,300,000			3,461,300,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable	34,700,000			34,700,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	187,700,000			187,700,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Deferred Revenue	21,700,000			21,700,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities	245,100,000			245,100,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	$ 489,200,000			$ 489,200,000
Business Acquisition, Pro Forma Net Income (Loss)		1,122,800
East China revenue included in consolidated statements of earnings		299,300,000
East China net earnings included in consolidated statements of earnings		25,200,000
Tazo business [Member]
Business Acquisition [Line Items]
Proceeds from Divestiture of Businesses			383,800,000
Deconsolidation, Gain (Loss), Amount			$ 347,900,000
Taiwan JV [Member]
Business Acquisition [Line Items]
Preexisting ownership percentage in equity method investment			50.00%
Acquired and reacquired rights
Business Acquisition [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization		$ 377,000,000			$ 377,000,000	$ 320,100,000