Revenue (Tables)

12 Months Ended

Jun. 30, 2026

Revenue from Contract with Customer [Abstract]

Summary of Disaggregation of Revenue

The following tables provide details of the Company's revenues and includes a reconciliation to the Company’s reportable segments:

	Years Ended
	June 30,
Types of Revenues	2026		2025		2024
HCM	$	9,110.6	$	8,674.5	$	8,155.7
HRO, excluding PEO zero-margin benefits pass-throughs	3,973.5		3,782.3		3,544.2
PEO zero-margin benefits pass-throughs	4,607.3		4,289.0		3,975.9
Global	2,901.2		2,626.0		2,502.1
Interest on funds held for clients	1,354.8		1,189.1		1,024.7
Total revenues	$	21,947.4	$	20,560.9	$	19,202.6

Reconciliation of disaggregated revenue to our reportable segments for the year ended June 30, 2026:

Types of Revenues	Employer Services		PEO		Total
HCM	$	9,120.4	$	—	$	9,120.4
HRO, excluding PEO zero-margin benefits pass-throughs	1,467.4		2,508.4		3,975.8
PEO zero-margin benefits pass-throughs	—		4,607.3		4,607.3
Global	2,901.2		—		2,901.2
Interest on funds held for clients	1,342.4		12.4		1,354.8
Total segment revenues	14,831.4		7,128.1		21,959.5
Intercompany eliminations					(12.1)
Total consolidated revenues					$	21,947.4

Reconciliation of disaggregated revenue to our reportable segments for the year ended June 30, 2025:

Types of Revenues	Employer Services		PEO		Total
HCM	$	8,684.5	$	—	$	8,684.5
HRO, excluding PEO zero-margin benefits pass-throughs	1,394.3		2,390.6		3,784.9
PEO zero-margin benefits pass-throughs	—		4,289.0		4,289.0
Global	2,626.0		—		2,626.0
Interest on funds held for clients	1,178.3		10.8		1,189.1
Total segment revenues	13,883.1		6,690.4		20,573.5
Intercompany eliminations					(12.6)
Total consolidated revenues					$	20,560.9

Reconciliation of disaggregated revenue to our reportable segments for the year ended June 30, 2024:

Types of Revenues	Employer Services		PEO		Total
HCM	$	8,164.2	$	—	$	8,164.2
HRO, excluding PEO zero-margin benefits pass-throughs	1,299.1		2,248.4		3,547.5
PEO zero-margin benefits pass-throughs	—		3,975.9		3,975.9
Global	2,502.1		—		2,502.1
Interest on funds held for clients	1,015.4		9.3		1,024.7
Total segment revenues	12,980.8		6,233.6		19,214.4
Intercompany eliminations					(11.8)
Total consolidated revenues					$	19,202.6

Summary of Contract with Customer, Liability

Changes in deferred revenue related to set up fees for the year ended June 30, 2026 were as follows:

Contract Liability
Contract liability, July 1, 2025	$	520.2
Recognition of revenue included in beginning of year contract liability	(139.5)
Contract liability, net of revenue recognized on contracts during the year	147.5
Currency translation adjustments	(2.6)
Contract liability, June 30, 2026	$	525.6

Summary of Deferred Costs

The balance is as follows:

June 30,	2026		2025
Deferred costs to obtain a contract	$	1,500.4	$	1,438.6
Deferred costs to fulfill a contract	1,743.7		1,715.5
Total deferred contract costs (1)	$	3,244.1	$	3,154.1

(1) The amount of total deferred costs amortized during the years ended June 30, 2026, June 30, 2025, and June 30, 2024 were $1,200.5 million, $1,145.3 million, and $1,067.6 million, respectively.