Consolidated Statement of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Operating activities:
Net income	$ 729.7	$ 827.6	$ 826.8
Adjustments to arrive at cash provided by operating activities:
Depreciation	143.3	133.1	122.5
Amortization of intangible assets	28.9	29.4	30.0
Share-based compensation expense	40.5	41.5	42.5
Retirement benefit expense	157.1	141.3	132.9
Pension contributions	(44.3)	(41.0)	(42.1)
Deferred income taxes	(70.5)	(29.3)	(7.2)
Net loss (gain) on disposition of property	1.7	(0.1)	0.6
Income tax benefit from the exercise of stock options	0.0	0.0	0.1
Excess income tax benefit from share-based compensation	(3.3)	(12.4)	(29.9)
Changes in assets and liabilities, excluding effects of acquisitions and foreign currency adjustments:
Receivables	(18.9)	73.4	(53.7)
Inventories	4.6	(2.5)	12.9
Accounts payable	32.3	17.3	(20.7)
Advance payments from customers and deferred revenue	11.7	20.7	(8.4)
Compensation and benefits	(81.1)	(33.9)	43.3
Income taxes	(8.9)	27.3	1.8
Other assets and liabilities	24.5	(4.7)	(18.1)
Cash provided by operating activities	947.3	1,187.7	1,033.3
Investing activities:
Capital expenditures	(116.9)	(122.9)	(141.0)
Acquisition of businesses, net of cash acquired	(139.1)	(21.2)	(81.5)
Purchases of short-term investments	(1,070.7)	(867.6)	(705.7)
Proceeds from maturities of short-term investments	886.3	762.7	447.8
Proceeds from sale of property	0.4	2.1	0.4
Other investing activities	0.0	0.0	(3.4)
Cash used for investing activities	(440.0)	(246.9)	(483.4)
Financing activities:
Net issuance (repayment) of short-term debt	448.6	(325.0)	146.0
Issuance of long-term debt, net of discount and issuance costs	0.0	594.3	0.0
Cash dividends	(378.2)	(350.1)	(320.5)
Purchases of treasury stock	(507.6)	(598.4)	(485.7)
Proceeds from the exercise of stock options	36.2	60.3	108.5
Excess income tax benefit from share-based compensation	3.3	12.4	29.9
Other financing activities	0.0	(1.6)	0.0
Cash used for financing activities	(397.7)	(608.1)	(521.8)
Effect of exchange rate changes on cash	(10.5)	(96.7)	(37.7)
Increase (decrease) in cash and cash equivalents	99.1	236.0	(9.6)
Cash and cash equivalents at beginning of year	1,427.3	1,191.3	1,200.9
Cash and cash equivalents at end of year	$ 1,526.4	$ 1,427.3	$ 1,191.3