Statements Of Consolidated Earnings - USD ($) shares in Millions, $ in Millions		12 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
REVENUES:
Revenues, other than interest on funds held for clients and PEO revenues		$ 8,985.2	$ 8,518.1	$ 8,234.0
Interest on funds held for clients		466.5	397.4	377.3
PEO revenues	[1]	3,874.1	3,464.3	3,056.5
TOTAL REVENUES		13,325.8	12,379.8	11,667.8
EXPENSES:
Operating expenses		6,937.9	6,416.1	6,025.0
Systems development and programming costs		630.2	627.5	603.7
Depreciation and amortization		274.5	226.2	211.6
TOTAL COSTS OF REVENUES		7,842.6	7,269.8	6,840.3
Selling, general, and administrative expenses		2,971.5	2,783.2	2,637.0
Interest expense		102.7	80.0	56.2
TOTAL EXPENSES		10,916.8	10,133.0	9,533.5
Other expense/(income), net		237.9	(284.3)	(100.4)
EARNINGS FROM CONTINUING OPERATIONS BEFORE INCOME TAXES		2,171.1	2,531.1	2,234.7
Provision for income taxes		550.3	797.7	741.3
NET EARNINGS FROM CONTINUING OPERATIONS		1,620.8	1,733.4	1,493.4
LOSSES FROM DISCONTINUED OPERATIONS BEFORE INCOME TAXES		0.0	0.0	(1.4)
Provision for income taxes		0.0	0.0	(0.5)
NET LOSS FROM DISCONTINUED OPERATIONS		0.0	0.0	(0.9)
NET EARNINGS		$ 1,620.8	$ 1,733.4	$ 1,492.5
Basic earnings per share (in dollars per share)		$ 3.68	$ 3.87	$ 3.27
Basic earnings per share from discontinued operations (in dollars per share)		0.00	0.00	0.00
BASIC EARNINGS PER SHARE (in dollars per share)		3.68	3.87	3.27
Diluted earnings per share (in dollars per share)		3.66	3.85	3.25
Diluted earnings per share from discontinued operations (in dollars per share)		0.00	0.00	0.00
DILUTED EARNINGS PER SHARE (in dollars per share)		$ 3.66	$ 3.85	$ 3.25
Basic weighted average shares outstanding (in shares)		440.6	447.8	457.0
Diluted weighted average shares outstanding (in shares)		443.3	450.3	459.1

[1] For the years ended June 30, 2018 ("fiscal 2018"), June 30, 2017 ("fiscal 2017"), and June 30, 2016 ("fiscal 2016"), Professional Employer Organization ("PEO") revenues are net of direct pass-through costs, primarily consisting of payroll wages and payroll taxes, of $39,140.9 million, $34,567.4 million, and $30,928.6 million, respectively.