Statements of Consolidated Cash Flows - USD ($) $ in Millions	9 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Cash Flows from Operating Activities:
Net earnings	$ 3,169.0	$ 2,922.7
Adjustments to reconcile net earnings to cash flows provided by operating activities:
Depreciation and amortization	436.7	426.2
Amortization of deferred contract costs	852.0	795.0
Deferred income taxes	17.2	(4.4)
Stock-based compensation expense	202.5	188.7
Bad debt expense	40.2	38.5
Net pension income	(14.8)	(17.4)
Net accretion of discounts and amortization of premiums on available-for-sale securities	(49.8)	(29.2)
Other	10.8	(5.4)
Changes in operating assets and liabilities:
Increase in accounts receivable	(138.7)	(496.2)
Increase in deferred contract costs	(890.8)	(865.9)
Increase in other assets	(154.9)	(225.7)
Increase/(decrease) in accounts payable	42.0	(9.1)
Increase/(decrease) in accrued expenses and other liabilities	(20.9)	139.2
Net cash flows provided by operating activities	3,500.5	2,857.0
Cash Flows from Investing Activities:
Purchases of corporate and client funds marketable securities	(5,656.4)	(4,365.7)
Proceeds from the sales and maturities of corporate and client funds marketable securities	3,782.9	3,624.6
Capital expenditures	(134.6)	(153.7)
Additions to intangibles	(276.8)	(263.2)
Acquisitions of businesses, net of cash acquired	(1,165.1)	(33.6)
Proceeds from sale of property, plant, and equipment and other assets	3.3	28.3
Other	(11.5)	(8.5)
Net cash flows used in investing activities	(3,458.2)	(1,171.8)
Cash Flows from Financing Activities:
Net increase in client funds obligations	634.4	10,999.6
Net cash (distributed)/received from the Internal Revenue Service	(549.2)	1,132.0
Payments of debt	(0.9)	(0.7)
Proceeds from the issuance of debt	988.9	0.0
Settlement of cash flow hedges	(12.5)	0.0
Repurchases of common stock	(956.5)	(796.2)
Net proceeds from stock purchase plan and stock-based compensation plans	98.7	24.6
Dividends paid	(1,773.1)	(1,608.0)
Net proceeds related to reverse repurchase agreements	(346.2)	(67.5)
Net cash flows (used in)/provided by financing activities	(1,916.4)	9,683.8
Effect of exchange rate changes on cash, cash equivalents, restricted cash, and restricted cash equivalents	(12.7)	(15.7)
Net change in cash, cash equivalents, restricted cash, and restricted cash equivalents	(1,886.8)	11,353.3
Cash, cash equivalents, restricted cash, and restricted cash equivalents, beginning of period	10,086.0	8,771.5
Cash, cash equivalents, restricted cash, and restricted cash equivalents, end of period	8,199.2	20,124.8
Supplemental disclosures of cash flow information:
Cash paid for interest	339.9	260.9
Cash paid for income taxes, net of income tax refunds	$ 836.9	$ 806.1