Acquisitions (Narrative) (Details) - USD ($)				12 Months Ended
	Feb. 14, 2017	Sep. 21, 2016	Sep. 08, 2015	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015	Feb. 28, 2017
Business Acquisition [Line Items]
Cash payment, net of cash acquired				$ 311,400,000	$ 25,300,000	$ 1,638,700,000
Goodwill				$ 1,759,600,000	1,584,400,000	1,610,500,000
Loans Payable [Member]
Business Acquisition [Line Items]
Proceeds from issuance of senior notes			$ 1,800,000,000
Senior Notes [Member]
Business Acquisition [Line Items]
Proceeds from issuance of senior notes			425,000,000
Senior unsecured 5.00% Notes due on February 14, 2025 [Member]
Business Acquisition [Line Items]
Senior unsecured notes							$ 300,000,000
Mortara [Member]
Business Acquisition [Line Items]
Cash consideration	$ 330,000,000
Cash payment, net of cash acquired	311,200,000
Goodwill	$ 164,800,000
Tridien Medical [Member]
Business Acquisition [Line Items]
Cash payment, net of cash acquired		$ 26,000,000
Working capital		10,400,000
Goodwill		7,400,000
Intangible assets		$ 6,300,000
Welch Allyn Holdings, Inc. [Member]
Business Acquisition [Line Items]
Cash consideration			1,686,800,000
Cash payment, net of cash acquired			1,633,100,000
Goodwill			$ 1,179,800,000
Shares of common stock in acquisition			8,133,722
Total combined purchase price			$ 2,049,400,000
Goodwill adjustment					$ 23,700,000
Pro forma revenue higher by						638,000,000
Pro forma net income lower by						$ 59,000,000