Condensed Consolidated Statement of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Operating activities:
Net income	$ 420.2	$ 378.4
Adjustments to arrive at cash provided by operating activities:
Depreciation	66.1	58.5
Amortization of intangible assets	13.6	15.8
Share-based compensation expense	21.2	21.9
Retirement benefit expense	71.3	66.5
Pension contributions	(21.3)	(25.1)
Net loss on disposition of property	0.2	0
Income tax benefit from the exercise of stock options	0	0.1
Excess income tax benefit from share-based compensation	(6.6)	(18.6)
Changes in assets and liabilities, excluding effects of acquisitions and foreign currency adjustments:
Receivables	81.2	(10.9)
Inventories	(34.6)	(57.1)
Accounts payable	26.7	12.1
Advance payments from customers and deferred revenue	24.6	39.5
Compensation and benefits	(70.3)	(32.9)
Income taxes	(14.0)	(37.3)
Other assets and liabilities	(24.9)	(4.6)
Cash provided by operating activities	553.4	406.3
Investing activities:
Capital expenditures	(58.0)	(58.3)
Acquisition of business, net of cash acquired	(21.2)	(81.5)
Purchases of short-term investments	(338.0)	(310.8)
Proceeds from maturities of short-term investments	323.8	197.8
Proceeds from sale of property	0.2	0.2
Other investing activities	0	(3.4)
Cash used for investing activities	(93.2)	(256.0)
Financing activities:
Net (repayment) issuance of short-term debt	(325.0)	163.5
Issuance of long-term debt, net of discount and issuance costs	594.3	0
Cash dividends	(175.9)	(160.9)
Purchases of treasury stock	(293.0)	(217.8)
Proceeds from the exercise of stock options	22.7	83.9
Excess income tax benefit from share-based compensation	6.6	18.6
Other financing activities	(1.6)	0
Cash used for financing activities	(171.9)	(112.7)
Effect of exchange rate changes on cash	(76.7)	1.3
Increase in cash and cash equivalents	211.6	38.9
Cash and cash equivalents at beginning of period	1,191.3	1,200.9
Cash and cash equivalents at end of period	$ 1,402.9	$ 1,239.8