Statements of Consolidated Cash Flows - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Jun. 30, 2019	Sep. 30, 2019		Jun. 30, 2019	Sep. 30, 2018
Cash Flows from Operating Activities:
Net earnings	$ 582.4	$ 505.4	$ 2,292.8
Adjustments to reconcile net earnings to cash flows provided by operating activities:
Depreciation and amortization	117.3	99.0
Amortization of deferred contract costs	227.3	216.9
Deferred income taxes	44.4	26.4
Stock-based compensation expense	37.1	38.4
Net pension expense	(2.7)	17.1
Net amortization of premiums and accretion of discounts on available-for-sale securities	12.2	14.3
Impairment of intangible assets	0.0	12.1
Gain on sale of assets	1.9	0.0
Other	11.9	10.1
Changes in operating assets and liabilities, net of effects from acquisitions:
Increase in accounts receivable	(96.8)	(239.2)
Increase in other assets	(391.7)	(471.2)
Decrease in accounts payable	(15.1)	(2.3)
Decrease in accrued expenses and other liabilities	(91.6)	(77.8)
Net cash flows provided by operating activities	432.8	149.2
Cash Flows from Investing Activities:
Purchases of corporate and client funds marketable securities	(1,409.9)	(755.8)
Proceeds from the sales and maturities of corporate and client funds marketable securities	1,653.7	539.8
Capital expenditures	(56.8)	(43.2)
Additions to intangibles	(88.2)	(73.8)
Acquisitions of businesses, net of cash acquired	0.0	(119.7)
Proceeds from the sale of property, plant, and equipment	23.4	0.0
Net cash flows provided by / (used in) investing activities	122.2	(452.7)
Cash Flows from Financing Activities:
Net decrease in client funds obligations	(8,063.3)	(1,711.5)
Payments of debt	(0.5)	(0.5)
Repurchases of common stock	(309.7)	(227.1)
Net proceeds from stock purchase plan and stock-based compensation plans	(32.1)	(24.4)
Dividends paid	(343.3)	(302.6)
Net (repayments of)/proceeds from reverse repurchase agreements	166.3	448.4
Net proceeds from commercial paper borrowings	3,536.7	0.0
Net cash flows (used in) / provided by financing activities	(5,045.9)	(1,817.7)
Effect of exchange rate changes on cash, cash equivalents, restricted cash, and restricted cash equivalents	(33.1)	(12.6)
Net change in cash, cash equivalents, restricted cash, and restricted cash equivalents	(4,524.0)	(2,133.8)
Cash, cash equivalents, restricted cash, and restricted cash equivalents, beginning of period	6,796.2	6,542.1	6,542.1
Cash, cash equivalents, restricted cash, and restricted cash equivalents, end of period	2,272.2	4,408.3	6,796.2
Reconciliation of cash, cash equivalents, restricted cash, and restricted cash equivalents to the Consolidated Balance Sheets
Cash and cash equivalents				$ 1,403.9		$ 1,949.2	$ 1,490.3
Restricted cash and cash equivalents held to satisfy client funds obligations				868.3	[1]	4,847.0	2,918.0	[1]
Total cash, cash equivalents, restricted cash, and restricted cash equivalents	6,796.2	6,542.1	$ 6,796.2	$ 2,272.2		$ 6,796.2	$ 4,408.3
Supplemental disclosures of cash flow information:
Cash paid for interest	53.6	49.4
Cash paid for income taxes, net of income tax refunds	$ 45.6	$ 39.3

[1] See Note 6 for a reconciliation of restricted cash and restricted cash equivalents in funds held for clients on the Consolidated Balance Sheets.