Statements of Consolidated Cash Flows - USD ($) $ in Millions	6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash Flows from Operating Activities:
Net earnings	$ 1,249.6	$ 1,234.0
Adjustments to reconcile net earnings to cash flows provided by operating activities:
Depreciation and amortization	257.8	234.9
Amortization of deferred contract costs	464.9	456.0
Deferred income taxes	1.3	44.1
Stock-based compensation expense	80.9	73.3
Net pension income	(22.0)	(0.4)
Net amortization of premiums and accretion of discounts on available-for-sale securities	28.7	26.3
Impairment of assets	5.0	0.0
Gain on sale of assets	(1.8)	(2.1)
Other	2.4	6.5
Changes in operating assets and liabilities:
Increase in accounts receivable	(86.5)	(198.8)
Increase in other assets	(643.3)	(605.4)
Increase in accounts payable	10.2	12.3
Decrease in accrued expenses and other liabilities	(158.9)	(149.8)
Net cash flows provided by operating activities	1,188.3	1,130.9
Cash Flows from Investing Activities:
Purchases of corporate and client funds marketable securities	(3,554.8)	(2,875.3)
Proceeds from the sales and maturities of corporate and client funds marketable securities	2,832.5	2,995.2
Capital expenditures	(81.0)	(100.7)
Additions to intangibles	(148.1)	(167.7)
Proceeds from sale of property, plant, and equipment and other assets	1.8	23.6
Net cash flows used in investing activities	(949.6)	(124.9)
Cash Flows from Financing Activities:
Net increase in client funds obligations	10,036.4	7,093.7
Payments of debt	(1,001.1)	(1.1)
Proceeds from the issuance of debt	991.1	0.0
Settlement of cash flow hedges	(43.6)	0.0
Repurchases of common stock	(475.1)	(615.1)
Net proceeds from stock purchase plan and stock-based compensation plans	39.1	(4.4)
Dividends paid	(781.7)	(686.0)
Net payments related to reverse repurchase agreements	(13.6)	(262.0)
Net cash flows provided by financing activities	8,751.5	5,525.1
Effect of exchange rate changes on cash, cash equivalents, restricted cash, and restricted cash equivalents	84.7	(12.2)
Net change in cash, cash equivalents, restricted cash, and restricted cash equivalents	9,074.9	6,518.9
Cash, cash equivalents, restricted cash, and restricted cash equivalents, beginning of period	7,053.6	6,796.2
Cash, cash equivalents, restricted cash, and restricted cash equivalents, end of period	16,128.5	13,315.1
Reconciliation of cash, cash equivalents, restricted cash, and restricted cash equivalents to the Consolidated Balance Sheets
Total cash, cash equivalents, restricted cash, and restricted cash equivalents	16,128.5	13,315.1
Supplemental disclosures of cash flow information:
Cash paid for interest	28.1	70.6
Cash paid for income taxes, net of income tax refunds	$ 362.7	$ 350.4