Consolidated Statement of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Operating activities:
Net income	$ 825.7	$ 729.7	$ 827.6
Adjustments to arrive at cash provided by operating activities:
Depreciation	138.7	143.3	133.1
Amortization of intangible assets	30.2	28.9	29.4
Share-based compensation expense	38.5	40.5	41.5
Retirement benefit expense	176.0	157.1	141.3
Pension contributions	(254.9)	(44.3)	(41.0)
Deferred income taxes	33.8	(70.5)	(29.3)
Gain on sale of business	(60.8)	0.0	0.0
Net loss (gain) on disposition of property	0.1	1.7	(0.1)
Excess income tax benefit from share-based compensation	0.0	(3.3)	(12.4)
Changes in assets and liabilities, excluding effects of acquisitions and foreign currency adjustments:
Receivables	(53.0)	(18.9)	73.4
Inventories	(30.4)	4.6	(2.5)
Accounts payable	81.1	32.3	17.3
Advance payments from customers and deferred revenue	21.3	11.7	20.7
Compensation and benefits	124.7	(81.1)	(33.9)
Income taxes	(22.2)	(8.9)	27.3
Other assets and liabilities	(14.8)	24.5	(4.7)
Cash provided by operating activities	1,034.0	947.3	1,187.7
Investing activities:
Capital expenditures	(141.7)	(116.9)	(122.9)
Acquisition of businesses, net of cash acquired	(1.1)	(139.1)	(21.2)
Purchases of investments	(1,444.2)	(1,070.7)	(867.6)
Proceeds from maturities of investments	912.6	886.3	762.7
Proceeds from sale of investments	62.6	0.0	0.0
Proceeds from sale of business	94.0	0.0	0.0
Proceeds from sale of property	1.1	0.4	2.1
Cash used for investing activities	(516.7)	(440.0)	(246.9)
Financing activities:
Net (repayment) issuance of short-term debt	(98.2)	448.6	(325.0)
Issuance of long-term debt, net of discount and issuance costs	0.0	0.0	594.3
Cash dividends	(390.7)	(378.2)	(350.1)
Purchases of treasury stock	(342.6)	(507.6)	(598.4)
Proceeds from the exercise of stock options	181.9	36.2	60.3
Excess income tax benefit from share-based compensation	0.0	3.3	12.4
Other financing activities	0.0	0.0	(1.6)
Cash used for financing activities	(649.6)	(397.7)	(608.1)
Effect of exchange rate changes on cash	16.8	(10.5)	(96.7)
(Decrease) increase in cash and cash equivalents	(115.5)	99.1	236.0
Cash and cash equivalents at beginning of year	1,526.4	1,427.3	1,191.3
Cash and cash equivalents at end of year	$ 1,410.9	$ 1,526.4	$ 1,427.3