Statements Of Consolidated Cash Flows - USD ($) $ in Millions	9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement of Cash Flows [Abstract]
NET EARNINGS	$ 1,210.5	$ 1,116.3
Adjustments to reconcile net earnings to cash flows provided by operating activities:
Depreciation and amortization	214.7	207.1
Deferred income taxes	22.4	(40.1)
Stock-based compensation expense	102.4	110.7
Excess tax benefit related to exercise of stock options and restricted stock	(33.6)	(47.9)
Net pension expense	13.2	13.7
Net amortization of premiums and accretion of discounts on available-for-sale securities	71.0	75.4
Gain on sale of building	(13.9)	0.0
Gain on sale of divested businesses, net of tax	(21.8)	0.0
Other	22.9	(5.3)
Changes in operating assets and liabilities, net of effects from acquisitions and divestitures of businesses:
Increase in accounts receivable	(545.8)	(212.9)
Increase in other assets	(206.7)	(106.8)
Increase/(decrease) in accounts payable	2.3	(16.2)
Increase in accrued expenses and other liabilities	363.2	146.8
Proceeds from the sale of notes receivable	0.0	226.7
Operating activities of discontinued operations	0.0	(3.3)
Net cash flows provided by operating activities	1,200.8	1,464.2
Cash Flows from Investing Activities:
Purchases of corporate and client funds marketable securities	(4,240.9)	(3,366.1)
Proceeds from the sales and maturities of corporate and client funds marketable securities	4,061.2	2,617.4
Net increase in restricted cash and cash equivalents held to satisfy client funds obligations	(15,969.9)	(7,133.3)
Capital expenditures	(127.6)	(107.5)
Additions to intangibles	(160.1)	(131.6)
Acquisitions of businesses, net of cash acquired	0.0	(8.1)
Proceeds from the sale of property, plant, and equipment and other assets	15.7	23.6
Dividend received from CDK Global, Inc.	0.0	825.0
Cash retained by CDK Global, Inc.	0.0	(180.0)
Proceeds from the sale of divested businesses	162.2	0.0
Investing activities of discontinued operations	0.0	(15.9)
Net cash flows used in investing activities	(16,259.4)	(7,476.5)
Cash Flows from Financing Activities:
Net increase in client funds obligations	16,098.1	9,811.3
Net proceeds from debt issuance	1,998.3	0.0
Payments of debt	(1.0)	(1.8)
Repurchases of common stock	(1,091.0)	(1,127.7)
Net proceeds from stock purchase plan and stock-based compensation plans	52.7	87.8
Excess tax benefit related to exercise of stock options and restricted stock	33.6	47.9
Dividends paid	(701.2)	(696.2)
Net repayments of commercial paper borrowings	0.0	(2,173.0)
Other	(23.3)	0.0
Financing activities of discontinued operations	0.0	1.5
Net cash flows provided by financing activities	16,366.2	5,949.8
Effect of exchange rate changes on cash and cash equivalents	(5.5)	(112.5)
Net change in cash and cash equivalents	1,302.1	(175.0)
Cash and cash equivalents, beginning of period	1,639.3	1,983.6
Cash and cash equivalents, end of period	2,941.4	1,808.6
Less cash and cash equivalents of discontinued operations, end of period	0.0	2.9
Cash and cash equivalents of continuing operations, end of period	2,941.4	1,805.7
Supplemental disclosures of cash flow information:
Cash paid for interest	34.0	4.4
Cash paid for income taxes, net of income tax refunds	$ 420.3	$ 546.0