CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) shares in Millions, $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 107.0	$ 205.2
Accounts receivable, net	705.3	650.8
Prepaid expenses and income taxes	49.8	44.6
Other current assets	67.3	61.7
Total current assets	879.6	917.7
Other Current Assets, Other	17.5	17.1
Property and equipment, net	79.7	82.6
Operating lease right-of-use assets	60.3	61.9
Identifiable intangible assets, net	504.4	439.8
Goodwill	2,139.5	1,893.1
Other non-current assets	95.2	95.8
Total assets	3,698.4	3,429.0
Current liabilities:
Accounts payable	24.3	27.2
Accrued payroll	211.3	218.0
Operating lease liabilities	19.8	19.5
Other current liabilities	160.2	149.1
Total current liabilities	371.5	367.1
Long-term debt	1,282.6	1,033.5
Operating lease liabilities	44.6	46.9
Deferred income tax liabilities	191.0	187.5
Other long-term liabilities	60.0	64.2
Total liabilities	1,905.1	1,652.3
Commitments and contingencies (Note 6)
Stockholders’ equity:
Preferred stock	0.0	0.0
Common stock	0.4	0.4
Paid-in capital	719.0	684.2
Retained earnings	1,078.1	1,097.1
Accumulated other comprehensive loss	(4.2)	(5.0)
Total stockholders’ equity	1,793.3	1,776.7
Total liabilities and stockholders’ equity	$ 3,698.4	$ 3,429.0
Common stock, shares outstanding (in shares)	43.9	43.8

Other Current Assets, Other

No definition available.

Name:	asgn_OtherCurrentAssetsOther
Namespace Prefix:	asgn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).