ASGN (ASGN) 10-Q 6 Nov 20 2020 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares shares in Millions	9 Months Ended
	Sep. 30, 2020	Nov. 02, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2020
Document Transition Report	false
Entity File Number	001-35636
Entity Registrant Name	ASGN Inc
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	95-4023433
Entity Address, Address Description	4400 Cox Road, Suite 110
Entity Address, City or Town	Glen Allen
Entity Address, State or Province	VA
Entity Address, Postal Zip Code	23060
City Area Code	888
Local Phone Number	482-8068
Title of 12(b) Security	Common Stock
Trading Symbol	ASGN
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		52.9
Entity Central Index Key	0000890564
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Amendment Flag	false

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) shares in Millions, $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Cash and cash equivalents	$ 229.7	$ 95.2
Accounts receivable, net	676.5	648.7
Prepaid expenses and income taxes	10.3	29.4
Other current assets	18.2	18.2
Total current assets	934.7	791.5
Property and equipment, net	74.2	73.7
Operating lease right of use assets	93.2	94.6
Identifiable intangible assets, net	496.8	476.5
Goodwill	1,590.9	1,486.9
Other	21.8	18.2
Total assets	3,211.6	2,941.4
Accounts payable	50.1	39.2
Accrued payroll and contract professional pay	236.5	203.2
Operating lease liabilities	31	25.8
Other current liabilities	71.8	72.7
Total current liabilities	389.4	340.9
Long-term Debt	1,033.2	1,032.3
Operating Lease, Liability, Noncurrent	70.2	75.7
Deferred income tax liabilities	107.2	98.7
Payroll tax deferral and other	87.4	17.6
Total liabilities	1,687.4	1,565.2
Commitments and Contingencies (Note 6)
Preferred Stock, Value, Issued	0	0
Common Stock, Value, Issued	0.5	0.5
Paid-in capital	657.7	638
Retained earnings	870.9	744.7
Accumulated other comprehensive loss	(4.9)	(7)
Total stockholders’ equity	1,524.2	1,376.2
Total liabilities and stockholders’ equity	$ 3,211.6	$ 2,941.4
Common Stock, Shares Outstanding	52.8	52.9
Common Stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, shares authorized (in shares)	75	75
Preferred Stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred Stock, shares authorized (in shares)	1	1
Preferred Stock, shares issued (in shares)	0	0

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares shares in Millions	Sep. 30, 2020	Dec. 31, 2019
Stockholders’ equity:
Preferred Stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred Stock, shares authorized (in shares)	1	1
Preferred Stock, shares issued (in shares)	0	0
Common Stock, Shares Outstanding	52.8	52.9
Common Stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, shares authorized (in shares)	75	75

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($) shares in Millions, $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues		$ 1,011.9	$ 1,002.7	$ 2,939.2	$ 2,898.7
Cost of services		740.9	711.3	2,126.5	2,058.2
Gross profit		271	291.4	812.7	840.5
Selling, general and administrative expenses		177.2	188.6	547.3	574.8
Amortization of intangible assets		12.9	11.9	37.6	38.8
Operating income	[1]	80.9	90.9	227.8	226.9
Interest expense		(9.3)	(12.7)	(30.4)	(41.2)
Income before income taxes		71.6	78.2	197.4	185.7
Provision for income taxes		19.3	20.7	52.5	50.2
Income from continuing operations		52.3	57.5	144.9	135.5
Loss from discontinued operations, net of income taxes		0	(0.1)	0	(0.1)
Net income		$ 52.3	$ 57.4	$ 144.9	$ 135.4
Earnings per share:
Basic earnings per share		$ 1	$ 1.09	$ 2.75	$ 2.57
Diluted earnings per share		$ 0.99	$ 1.08	$ 2.73	$ 2.54
Number of shares and share equivalents used to calculate earnings per share:
Weighted-average number of common shares outstanding - basic		52.5	52.8	52.6	52.7
Diluted		53	53.4	53.1	53.4
Reconciliation of net income to comprehensive income:
Net income		$ 52.3	$ 57.4	$ 144.9	$ 135.4
Foreign currency translation adjustment		3	(2.4)	2.1	(2.5)
Comprehensive income		$ 55.3	$ 55	$ 147	$ 132.9
[1]	___________________ (1) Consolidated operating income includes corporate operating expenses, which are not allocated to the segments, consisting of consolidated stock-based compensation expense, compensation for corporate employees, acquisition, integration and strategic planning expenses, public company expenses and depreciation expense for corporate assets.

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDER'S EQUITY - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Paid-in Capital	Retained Earnings	Other
Shares Outstanding at Dec. 31, 2018		52.5
Total stockholders’ equity at Dec. 31, 2018	$ 1,182.1	$ 0.5	$ 601.8	$ 586.1	$ (6.3)
Vesting of restricted stock units, shares		0.3
Vesting of restricted stock units, value	(7.6)		(7.6)
Employee stock purchase plan, shares		0.2
Employee stock purchase plan, value	12.6		12.6
Exercise of stock options	0.1		0.1
Stock-based compensation expense	31.4		31.4
Stock Repurchased and Retired During Period, Shares		(0.3)
Stock Repurchased and Retired During Period, Value	(20)		(3.9)	(16.1)
Foreign currency translation adjustments	(2.5)				(2.5)
Net income	135.4			135.4
Shares Outstanding at Sep. 30, 2019		52.7
Total stockholders’ equity at Sep. 30, 2019	1,331.5	$ 0.5	634.4	705.4	(8.8)
Shares Outstanding at Jun. 30, 2019		52.8
Total stockholders’ equity at Jun. 30, 2019	1,283.7	$ 0.5	625.5	664.1	(6.4)
Vesting of restricted stock units, shares		0.1
Vesting of restricted stock units, value	(0.8)		(0.8)
Employee stock purchase plan, shares		0.1
Employee stock purchase plan, value	5.7		5.7
Exercise of stock options	0.1		0.1
Stock-based compensation expense	7.8		7.8
Stock Repurchased and Retired During Period, Shares		(0.3)
Stock Repurchased and Retired During Period, Value	(20)		(3.9)	(16.1)
Foreign currency translation adjustments	(2.4)				(2.4)
Net income	57.4			57.4
Shares Outstanding at Sep. 30, 2019		52.7
Total stockholders’ equity at Sep. 30, 2019	1,331.5	$ 0.5	634.4	705.4	(8.8)
Shares Outstanding at Dec. 31, 2019		52.9
Total stockholders’ equity at Dec. 31, 2019	1,376.2	$ 0.5	638	744.7	(7)
Vesting of restricted stock units, shares		0.2
Vesting of restricted stock units, value	(7)		(7)
Employee stock purchase plan, shares		0.5
Employee stock purchase plan, value	11.1		11.1
Exercise of stock options	0.6		0.6
Stock-based compensation expense	24.2		24.2
Stock Repurchased and Retired During Period, Shares		(0.8)
Stock Repurchased and Retired During Period, Value	(27.9)		(9.2)	(18.7)
Foreign currency translation adjustments	2.1				2.1
Net income	144.9			144.9
Shares Outstanding at Sep. 30, 2020		52.8
Total stockholders’ equity at Sep. 30, 2020	1,524.2	$ 0.5	657.7	870.9	(4.9)
Shares Outstanding at Jun. 30, 2020		52.5
Total stockholders’ equity at Jun. 30, 2020	1,457.1	$ 0.5	645.9	818.6	(7.9)
Vesting of restricted stock units, value	(1.1)		(1.1)
Employee stock purchase plan, shares		0.3
Employee stock purchase plan, value	5.2		5.2
Exercise of stock options	0.6		0.6
Stock-based compensation expense	7.1		7.1
Foreign currency translation adjustments	3				3
Net income	52.3			52.3
Shares Outstanding at Sep. 30, 2020		52.8
Total stockholders’ equity at Sep. 30, 2020	$ 1,524.2	$ 0.5	$ 657.7	$ 870.9	$ (4.9)

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Millions	9 Months Ended
	Sep. 30, 2020USD ($)	Sep. 30, 2019USD ($)
Cash Flows from Operating Activities:
Net income	$ 144.9	$ 135.4
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	65.6	68.8
Stock-based compensation	23.9	31.1
Other	(5.4)	(12.1)
Changes in operating assets and liabilities:
Accounts receivable	18.4	30.3
Prepaid expenses and income taxes	(19.2)	1.9
Accounts payable	13.3	(17.9)
Accrued payroll and contract professional pay	27.9	25.1
Income taxes payable	0.8	15.5
Operating lease right of use assets	(21.8)	(20.9)
Operating lease liabilities	(20.8)	(21.3)
Other	(54.2)	5.7
Net cash provided by operating activities	337.8	231.8
Cash Flows from Investing Activities:
Cash paid for property and equipment	(28.3)	(22.8)
Cash paid for acquisitions, net of cash acquired	(151.5)	(48.5)
Other	0.3	0.1
Net cash used in investing activities	(180.1)	(71.4)
Cash Flows from Financing Activities:
Proceeds from long-term debt	65.5	59
Principal payments of long-term debt	(65.5)	(178)
Debt issuance and amendment costs	(1.2)	0
Proceeds from option exercises and employee stock purchase plan	11.7	12.7
Payment of employment taxes related to release of restricted stock awards	(7)	(7.7)
Repurchase of common stock	(27.9)	(20)
Net cash used in financing activities	(24.4)	(134)
Effect of exchange rate changes on cash and cash equivalents	1.2	(0.7)
Net Increase in Cash and Cash Equivalents	134.5	25.7
Cash and Cash Equivalents at Beginning of Year	95.2	41.8
Cash and Cash Equivalents at End of Period	229.7	67.5
Supplemental Disclosure of Cash Flow Information Cash paid for:
Income taxes	40.7	36.6
Interest	22.4	37
Non-cash transactions —
Unpaid portion of additions to property and equipment	3.2	1.1
Operating lease right of use assets obtained in exchange for operating lease liabilities	20.2	$ 13
Contingent purchase consideration	$ 6

General (Notes)

General (Notes)	9 Months Ended
	Sep. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Financial Statement Presentation	Basis of presentation — The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") and the rules of the Securities and Exchange Commission ("SEC"). Certain information and note disclosures normally included in annual financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to those rules and regulations. The December 31, 2019 condensed consolidated balance sheet was derived from audited financial statements. The financial statements include adjustments consisting of normal recurring items, which, in the opinion of management, are necessary for a fair presentation of the financial position of ASGN Incorporated and its subsidiaries ("ASGN" or the "Company") and its results of operations for the interim dates and periods set forth herein. The results for any of the interim periods are not necessarily indicative of the results to be expected for the full year or any other period. This Quarterly Report on Form 10-Q should be read in conjunction with the Company’s Annual Report on Form 10-K for the year ended December 31, 2019 ("2019 10-K"). COVID-19 pandemic — As a result of the COVID-19 pandemic, the Company experienced a precipitous decline in revenues from its creative marketing and permanent placement divisions in the second quarter of 2020, with some recovery in the current quarter. In the second quarter of 2020, the Company performed an impairment assessment of the goodwill and trademarks of these divisions, which included sensitivity analyses and stress testing on certain of the more sensitive inputs to the valuation models, including the weighted-average cost of capital and future expected revenues. Based on this assessment in the second quarter of 2020, the Company concluded that their fair values, more likely than not, exceeded their carrying values. In the third quarter of 2020, revenues from these divisions improved and the other more sensitive inputs to the valuation models remained reasonable. As a result, there were no indicators of impairment at September 30, 2020. Given the uncertainty of the current economic environment, accounting estimates and assumptions that require management's judgments concerning the effects of the economic downturn and recovery, particularly those relating to the recoverability of intangible assets and goodwill, are being closely monitored.

Accounting Standard Update (Not

Accounting Standard Update (Notes)	9 Months Ended
	Sep. 30, 2020
Accounting Standard Update [Abstract]
New Accounting Pronouncements	On January 1, 2020, the Company adopted Accounting Standard Update ("ASU") No. 2016-13, Financial Instruments - Credit Losses (Topic 326). This standard requires a financial asset to be presented at the net amount expected to be collected. The financial assets of the Company in scope of ASU 2016-13 were primarily accounts receivable. The adoption of this standard did not have a significant impact to the Company's consolidated financial statements. On January 1, 2020, the Company adopted ASU No. 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract . This update provides guidance regarding the capitalization of implementation costs incurred in a cloud computing arrangement that is a service contract. ASU 2018-15 was adopted prospectively and cloud computing implementation costs incurred on January 1, 2020 or later are included in other noncurrent assets in the consolidated balance sheet and are presented within operating cash flows. As of September 30, 2020, capitalized implementation costs for cloud computing arrangements were not significant. On January 1, 2020, the Company adopted ASU No. 2017-04, Intangibles-Goodwill and Other (Topic 350) Simplifying the Test for Goodwill Impairment. This guidance eliminates Step 2 of the goodwill impairment test and goodwill impairment will now be measured as the amount by which a reporting unit’s carrying amount exceeds its fair value. The adoption of this guidance did not have a material impact on the Company's consolidated financial statements. In March 2020, the Financial Accounting Standards Board ("FASB") issued ASU No. 2020-04, Reference Rate Reform (Topic 848) - Facilitation of the Effects of Reference Rate Reform on Financial Reporting. ASU 2020-04 contains practical expedients for reference rate reform related activities that impact debt, leases and other contracts. This guidance is optional and may be elected over time as reference rate reform activities occur. The Company is currently evaluating the impact of this guidance.

Acquisitions (Notes)

Acquisitions (Notes)	9 Months Ended
	Sep. 30, 2020
Business Combinations [Abstract]
Acquisitions	LeapFrog Systems, Inc. ("LeapFrog") On August 31, 2020, the Company acquired all of the outstanding shares of LeapFrog, headquartered in Boston, Massachusetts, for $66.0 million in cash and up to $6.0 million in estimated future contingent consideration. The acquisition deepens and expands the Company's capabilities in digital innovation and enterprise solutions for its financial services, insurance and healthcare clients. LeapFrog is part of the Apex Segment. LeapFrog's results of operations are included in the consolidated results of the Company from the date of its acquisition. The purchase accounting for the LeapFrog acquisition remains incomplete with respect to the provisional fair value of assets acquired and liabilities assumed, as management continues to gather and evaluate information about circumstances that existed as of the acquisition date. Measurement period adjustments will be recognized prospectively within 12 months from the date of acquisition. Goodwill associated with this acquisition totaled $42.4 million, which is not deductible for income tax purposes. Goodwill represents the acquired assembled workforce, potential new customers and future cash flows after the acquisition. Identifiable intangible assets of $35.1 million included customer and contractual relationships and non-compete agreements with useful lives ranging from approximately two to seven years. Blackstone Federal On January 24, 2020, the Company acquired certain specified assets and liabilities that make up the federal division of Blackstone Technology Group ("Blackstone Federal"), for $85.5 million in cash. Blackstone Federal is headquartered in Arlington, Virginia. The acquisition expands the Company's capabilities in agile application development, cloud modernization and systems architecture, cybersecurity, user experience design and branding services to government clients and is part of the ECS Segment. The results of operations of Blackstone Federal are included in the consolidated results of the Company from the date of its acquisition. Goodwill associated with this acquisition totaled $61.1 million, which is deductible for income tax purposes. Goodwill represents the acquired assembled workforce, potential new customers and future cash flows after the acquisition. Identifiable intangible assets related to this acquisition totaled $22.8 million, with useful lives ranging from one to nine years. The purchase accounting for this acquisition has been finalized. Intersys Consulting, LLC ("Intersys") On October 17, 2019, the Company acquired all of the membership interests of Intersys, headquartered in Austin, Texas, for $67.0 million in cash. The acquisition expands the Company's capabilities in digital innovation and enterprise solutions and it is part of the Apex Segment. The results of operations of Intersys are included in the consolidated results of the Company from the date of its acquisition. Goodwill associated with this acquisition totaled $41.4 million, of which $38.7 million is deductible for income tax purposes. Goodwill represents the acquired assembled workforce, potential new customers and future cash flows after the acquisition. Identifiable intangible assets related to this acquisition totaled $23.8 million, with useful lives ranging from three to ten years. The purchase accounting for this acquisition has been finalized.

Goodwill and Identifiable Asset

Goodwill and Identifiable Assets (Notes)	9 Months Ended
	Sep. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Identifiable Intangible Assets	4. Goodwill and Identifiable Intangible Assets Changes in the carrying amount of goodwill by segment for the nine months ended September 30, 2020 and the year ended December 31, 2019 were as follows (in millions): Apex Oxford ECS Total Balance as of December 31, 2018 $ 662.1 $ 230.8 $ 528.2 $ 1,421.1 DHA acquisition — — 24.7 24.7 Intersys acquisition 41.4 — — 41.4 Translation adjustment — (0.3) — (0.3) Balance as of December 31, 2019 703.5 230.5 552.9 1,486.9 Blackstone Federal acquisition — — 61.1 61.1 LeapFrog acquisition 42.4 — — 42.4 Translation adjustment (0.4) 0.9 — 0.5 Balance as of September 30, 2020 $ 745.5 $ 231.4 $ 614.0 $ 1,590.9 Acquired intangible assets consisted of the following (in millions): September 30, 2020 December 31, 2019 Estimated Useful Life in Years Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Customer and contractual relationships 2 - 12.75 $ 437.3 $ 211.2 $ 226.1 $ 384.9 $ 179.9 $ 205.0 Contractor relationships 2 - 5 71.1 70.9 0.2 71.1 70.6 0.5 Backlog 1 - 2.75 28.3 27.1 1.2 25.0 23.9 1.1 Non-compete agreements 2 - 7 27.4 17.0 10.4 24.8 13.8 11.0 In-use software 6 18.9 18.9 — 18.9 18.9 — 583.0 345.1 237.9 524.7 307.1 217.6 Trademarks (not amortized) 258.9 — 258.9 258.9 — 258.9 Total $ 841.9 $ 345.1 $ 496.8 $ 783.6 $ 307.1 $ 476.5 Estimated future amortization expense is as follows (in millions): Remainder of 2020 $ 13.5 2021 46.6 2022 38.4 2023 33.5 2024 26.2 Thereafter 79.7 $ 237.9

Long-Term Debt (Notes)

Long-Term Debt (Notes)	9 Months Ended
	Sep. 30, 2020
Debt Disclosure [Abstract]
Long-Term Debt	Long-term debt consisted of the following (in millions): September 30, December 31, Senior Secured Credit Facility: $250 million revolving credit facility, due 2024 $ — $ — Term B loan facility, due 2025 490.8 490.8 Unsecured Senior Notes, due 2028 550.0 550.0 1,040.8 1,040.8 Unamortized deferred loan costs (7.6) (8.5) Total long-term debt $ 1,033.2 $ 1,032.3 Senior Secured Credit Facility The senior secured credit facility ("Credit Facility") consists of a term B loan and a revolving credit facility with a maximum borrowing capacity of $250.0 million ("Revolver"). Borrowings under the term B loan bear interest at LIBOR plus 1.75 percent, or the bank’s base rate plus 0.75 percent. Borrowings under the Revolver bear interest at LIBOR plus 1.25 percent to 2.25 percent, or the bank’s base rate plus 0.25 to 1.25 percent, depending on leverage levels. At September 30, 2020, the Company had no outstanding borrowings under the Revolver and had $3.9 million in undrawn stand-by letters of credit to secure certain obligations. A commitment fee of 0.20 to 0.35 percent is payable on the undrawn portion of the Revolver. There are no required minimum payments on the Credit Facility and it is secured by substantially all of the Company's assets and includes various restrictive covenants. The Company is required to make mandatory prepayments on its term B loan from excess cash flow and with the proceeds of asset sales, debt issuances and specified other events, subject to certain exceptions. The Revolver is limited to a maximum ratio of senior secured debt to trailing 12-months of lender-defined consolidated EBITDA. At September 30, 2020, the Company was in compliance with its debt covenants. Unsecured Senior Notes The Company has $550.0 million of unsecured senior notes due in 2028 ("Senior Notes"). The Senior Notes bear interest at 4.625 percent, which is payable in arrears on May 15 and November 15 of each year. The Senior Notes are unsecured obligations and are subordinate to the Company's Credit Facility to the extent of the collateral securing such facility. The Senior Notes also contain certain customary limitations including, among other terms and conditions, the Company's ability to incur additional indebtedness, engage in mergers and acquisitions, transfer or sell assets and make certain distributions.

Commitments and Contingencies (

Commitments and Contingencies (Notes)	9 Months Ended
	Sep. 30, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	The Company’s deferred compensation plan liability was $13.1 million and $11.8 million at September 30, 2020 and December 31, 2019, respectively, and was primarily included in other noncurrent liabilities. The employees' deferred compensation is deposited in a rabbi trust (see Note 11. Fair Value Measurements). The Company has operating leases for corporate offices, branch offices and data centers. Two of these properties were owned indirectly by certain board members and an executive of the Company until they were sold to an unrelated party in June 2020.

Revenues (Notes)

Revenues (Notes)	9 Months Ended
	Sep. 30, 2020
Revenue from Contract with Customer [Abstract]
Revenues	The Company’s contracts have termination for convenience provisions and do not have substantive termination penalties; therefore, the contract duration for accounting purposes may be less than the stated terms. For accounting purposes, the Company's contracts with customers are considered to be of a short-term nature (one year or less). The Company does not disclose the value of remaining performance obligations for short-term contracts.The Company has contract liabilities of $6.8 million and $8.4 million at September 30, 2020 and December 31, 2019, respectively, for payments received in advance of providing services under certain contracts. Contract liabilities are included in other current liabilities on the condensed consolidated balance sheets and are generally recognized as revenues within three months from the balance sheet date.

Income Taxes (Notes)

Income Taxes (Notes)	9 Months Ended
	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Income Taxes	For interim reporting periods, the Company’s provision for income taxes is calculated using its annualized estimated effective tax rate for the year. This rate is based on its estimated full year income and the related income tax expense for each jurisdiction in which the Company operates. The effective tax rate can be affected by changes in the geographical mix, permanent differences and the estimate of full year pretax accounting income. This rate is adjusted for the effects of discrete items occurring in the period.

Earnings Per Share (Notes)

Earnings Per Share (Notes)	9 Months Ended
	Sep. 30, 2020
Earnings Per Share [Abstract]
Earnings per share	The following is a reconciliation of the number of shares and share equivalents used to calculate basic and diluted earnings per share (in millions, except per share amounts): Three Months Ended Nine Months Ended September 30, September 30, 2020 2019 2020 2019 Net income $ 52.3 $ 57.4 $ 144.9 $ 135.4 Weighted-average number of common shares outstanding - basic 52.5 52.8 52.6 52.7 Dilutive effect of share equivalents 0.5 0.6 0.5 0.7 Number of common shares and share equivalents outstanding - diluted 53.0 53.4 53.1 53.4 Basic earnings per share $ 1.00 $ 1.09 $ 2.75 $ 2.57 Diluted earnings per share $ 0.99 $ 1.08 $ 2.73 $ 2.54 Number of anti-dilutive share equivalents — — 0.2 0.2

Segment Reporting (Notes)

Segment Reporting (Notes)	9 Months Ended
	Sep. 30, 2020
Segment Reporting [Abstract]
Segment Reporting Disclosure	ASGN provides IT and professional staffing services in the technology, digital, creative, engineering and life sciences fields across commercial and government sectors. ASGN operates through its Apex, Oxford and ECS Segments. The Apex Segment provides technology, digital, creative, scientific, engineering staffing and consulting services to Fortune 1000 and mid-market clients across the United States and Canada. The Oxford Segment provides hard-to-find technology, digital, engineering and life sciences staffing and consulting services in select skill and geographic markets in the United States and Europe. The Company’s commercial business is comprised of the Apex and Oxford Segments. The ECS Segment, the Company’s federal government business, delivers advanced solutions in cloud, cybersecurity, artificial intelligence, machine learning, application and IT modernization, science and engineering to U.S. defense, intelligence and federal civilian agencies. Virtually all of the Company's revenues are generated in the United States. Revenues from outside the United States accounted for less than 5.0 percent of consolidated revenues. The Company has three major revenue sources: (i) contract, (ii) permanent placement and (iii) federal government. The Company’s contract revenues are comprised of assignment revenues and consulting revenues. Consulting services consist of deliverables-based projects including support service centers and managed projects such as software development. The Company’s management evaluates the performance of each segment primarily based on revenues, gross profit and operating income. The information in the following tables is derived directly from internal financial reporting of the segments used for corporate management purposes. The following tables present revenues, gross profit, operating income and amortization by segment (in millions): Three Months Ended Nine Months Ended September 30, September 30, 2020 2019 2020 2019 Apex Revenues $ 596.1 $ 644.1 $ 1,802.1 $ 1,878.7 Gross profit 173.0 192.2 528.1 555.4 Operating income 69.4 79.2 202.3 213.1 Amortization 5.7 4.0 16.5 15.5 Oxford Revenues $ 127.2 $ 152.5 $ 396.1 $ 455.3 Gross profit 52.1 61.9 157.8 183.3 Operating income 12.1 13.6 31.0 36.3 Amortization 0.2 1.0 0.5 3.0 ECS Revenues $ 288.6 $ 206.1 $ 741.0 $ 564.7 Gross profit 45.9 37.3 126.8 101.8 Operating income 16.7 12.7 44.3 30.5 Amortization 7.0 6.9 20.6 20.3 Consolidated Revenues $ 1,011.9 $ 1,002.7 $ 2,939.2 $ 2,898.7 Gross profit 271.0 291.4 812.7 840.5 Operating income (1) 80.9 90.9 227.8 226.9 Amortization 12.9 11.9 37.6 38.8 ___________________ (1) Consolidated operating income includes corporate operating expenses, which are not allocated to the segments, consisting of consolidated stock-based compensation expense, compensation for corporate employees, acquisition, integration and strategic planning expenses, public company expenses and depreciation expense for corporate assets. The following table presents segment revenues by type (in millions): Three Months Ended Nine Months Ended September 30, September 30, 2020 2019 2020 2019 Apex Assignment $ 492.2 $ 544.7 $ 1,502.3 $ 1,598.0 Consulting 96.6 85.1 271.5 237.0 Permanent placement 7.3 14.3 28.3 43.7 596.1 644.1 1,802.1 1,878.7 Oxford Assignment $ 95.8 $ 115.3 $ 306.9 $ 350.0 Consulting 14.1 15.0 38.4 41.1 Permanent placement 17.3 22.2 50.8 64.2 127.2 152.5 396.1 455.3 ECS Firm-fixed-price $ 82.0 $ 64.4 $ 201.2 $ 153.8 Time and materials 80.8 68.4 234.6 200.6 Cost reimbursable 125.8 73.3 305.2 210.3 288.6 206.1 741.0 564.7 Consolidated $ 1,011.9 $ 1,002.7 $ 2,939.2 $ 2,898.7 The following table presents the ECS Segment (federal government business) revenues by customer type (in millions): Three Months Ended Nine Months Ended September 30, September 30, 2020 2019 2020 2019 Department of Defense and Intelligence Agencies $ 172.0 $ 112.6 $ 414.4 $ 316.2 Federal Civilian 96.2 82.0 276.1 213.5 Other 20.4 11.5 50.5 35.0 $ 288.6 $ 206.1 $ 741.0 $ 564.7

Fair Value Measurements (Notes)

Fair Value Measurements (Notes)	9 Months Ended
	Sep. 30, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	11. Fair Value Measurements The carrying amounts of cash and cash equivalents, accounts receivable, accounts payable and accrued payroll and contract professional pay approximate their fair value based on their short-term nature. The carrying amount of long-term debt recorded in the Company’s condensed consolidated balance sheet at September 30, 2020 was $1.0 billion and approximated its fair value (see Note 5. Long-Term Debt), which was determined using quoted prices in active markets for identical liabilities (Level 1 inputs). The Company has a deferred compensation plan and the employees' deferred compensation is deposited in a rabbi trust. This rabbi trust had investments, primarily mutual funds, of $13.1 million and $11.8 million at September 30, 2020 and December 31, 2019, respectively, which are measured at fair value using the net asset value per share. These assets were primarily included in other noncurrent assets. Certain assets, such as goodwill and trademarks, are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances, such as, when there is evidence of impairment (see Note 1. General for discussion of our assessment performed as of September 30, 2020). The fair value assigned to identifiable intangible assets is primarily determined using a discounted cash flow method (a non-recurring fair value measurement based on Level 3 inputs). All assets and liabilities of acquired companies are recorded at their estimated fair values at the dates of acquisition.

Goodwill and Identifiable Ass_2

Goodwill and Identifiable Assets (Tables)	9 Months Ended
	Sep. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	Changes in the carrying amount of goodwill by segment for the nine months ended September 30, 2020 and the year ended December 31, 2019 were as follows (in millions): Apex Oxford ECS Total Balance as of December 31, 2018 $ 662.1 $ 230.8 $ 528.2 $ 1,421.1 DHA acquisition — — 24.7 24.7 Intersys acquisition 41.4 — — 41.4 Translation adjustment — (0.3) — (0.3) Balance as of December 31, 2019 703.5 230.5 552.9 1,486.9 Blackstone Federal acquisition — — 61.1 61.1 LeapFrog acquisition 42.4 — — 42.4 Translation adjustment (0.4) 0.9 — 0.5 Balance as of September 30, 2020 $ 745.5 $ 231.4 $ 614.0 $ 1,590.9
Schedule of Acquired Intangible Assets	Acquired intangible assets consisted of the following (in millions): September 30, 2020 December 31, 2019 Estimated Useful Life in Years Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Customer and contractual relationships 2 - 12.75 $ 437.3 $ 211.2 $ 226.1 $ 384.9 $ 179.9 $ 205.0 Contractor relationships 2 - 5 71.1 70.9 0.2 71.1 70.6 0.5 Backlog 1 - 2.75 28.3 27.1 1.2 25.0 23.9 1.1 Non-compete agreements 2 - 7 27.4 17.0 10.4 24.8 13.8 11.0 In-use software 6 18.9 18.9 — 18.9 18.9 — 583.0 345.1 237.9 524.7 307.1 217.6 Trademarks (not amortized) 258.9 — 258.9 258.9 — 258.9 Total $ 841.9 $ 345.1 $ 496.8 $ 783.6 $ 307.1 $ 476.5
Schedule of Estimated Future Amortization Expense	Estimated future amortization expense is as follows (in millions): Remainder of 2020 $ 13.5 2021 46.6 2022 38.4 2023 33.5 2024 26.2 Thereafter 79.7 $ 237.9

Long-Term Debt (Tables)

Long-Term Debt (Tables)	9 Months Ended
	Sep. 30, 2020
Debt Disclosure [Abstract]
Schedule of Long-term Debt	Long-term debt consisted of the following (in millions): September 30, December 31, Senior Secured Credit Facility: $250 million revolving credit facility, due 2024 $ — $ — Term B loan facility, due 2025 490.8 490.8 Unsecured Senior Notes, due 2028 550.0 550.0 1,040.8 1,040.8 Unamortized deferred loan costs (7.6) (8.5) Total long-term debt $ 1,033.2 $ 1,032.3

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2020
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following is a reconciliation of the number of shares and share equivalents used to calculate basic and diluted earnings per share (in millions, except per share amounts): Three Months Ended Nine Months Ended September 30, September 30, 2020 2019 2020 2019 Net income $ 52.3 $ 57.4 $ 144.9 $ 135.4 Weighted-average number of common shares outstanding - basic 52.5 52.8 52.6 52.7 Dilutive effect of share equivalents 0.5 0.6 0.5 0.7 Number of common shares and share equivalents outstanding - diluted 53.0 53.4 53.1 53.4 Basic earnings per share $ 1.00 $ 1.09 $ 2.75 $ 2.57 Diluted earnings per share $ 0.99 $ 1.08 $ 2.73 $ 2.54 Number of anti-dilutive share equivalents — — 0.2 0.2

Segment Reporting (Tables)

Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2020
Segment Reporting Information [Line Items]
Schedule of Segment Reporting Information, by Segment	The following tables present revenues, gross profit, operating income and amortization by segment (in millions): Three Months Ended Nine Months Ended September 30, September 30, 2020 2019 2020 2019 Apex Revenues $ 596.1 $ 644.1 $ 1,802.1 $ 1,878.7 Gross profit 173.0 192.2 528.1 555.4 Operating income 69.4 79.2 202.3 213.1 Amortization 5.7 4.0 16.5 15.5 Oxford Revenues $ 127.2 $ 152.5 $ 396.1 $ 455.3 Gross profit 52.1 61.9 157.8 183.3 Operating income 12.1 13.6 31.0 36.3 Amortization 0.2 1.0 0.5 3.0 ECS Revenues $ 288.6 $ 206.1 $ 741.0 $ 564.7 Gross profit 45.9 37.3 126.8 101.8 Operating income 16.7 12.7 44.3 30.5 Amortization 7.0 6.9 20.6 20.3 Consolidated Revenues $ 1,011.9 $ 1,002.7 $ 2,939.2 $ 2,898.7 Gross profit 271.0 291.4 812.7 840.5 Operating income (1) 80.9 90.9 227.8 226.9 Amortization 12.9 11.9 37.6 38.8 ___________________ (1) Consolidated operating income includes corporate operating expenses, which are not allocated to the segments, consisting of consolidated stock-based compensation expense, compensation for corporate employees, acquisition, integration and strategic planning expenses, public company expenses and depreciation expense for corporate assets.
Disaggregation of Revenue	The following table presents segment revenues by type (in millions): Three Months Ended Nine Months Ended September 30, September 30, 2020 2019 2020 2019 Apex Assignment $ 492.2 $ 544.7 $ 1,502.3 $ 1,598.0 Consulting 96.6 85.1 271.5 237.0 Permanent placement 7.3 14.3 28.3 43.7 596.1 644.1 1,802.1 1,878.7 Oxford Assignment $ 95.8 $ 115.3 $ 306.9 $ 350.0 Consulting 14.1 15.0 38.4 41.1 Permanent placement 17.3 22.2 50.8 64.2 127.2 152.5 396.1 455.3 ECS Firm-fixed-price $ 82.0 $ 64.4 $ 201.2 $ 153.8 Time and materials 80.8 68.4 234.6 200.6 Cost reimbursable 125.8 73.3 305.2 210.3 288.6 206.1 741.0 564.7 Consolidated $ 1,011.9 $ 1,002.7 $ 2,939.2 $ 2,898.7
Revenue from External Customers by Products and Services	The following table presents the ECS Segment (federal government business) revenues by customer type (in millions): Three Months Ended Nine Months Ended September 30, September 30, 2020 2019 2020 2019 Department of Defense and Intelligence Agencies $ 172.0 $ 112.6 $ 414.4 $ 316.2 Federal Civilian 96.2 82.0 276.1 213.5 Other 20.4 11.5 50.5 35.0 $ 288.6 $ 206.1 $ 741.0 $ 564.7

General (Details)

General (Details) $ in Millions	9 Months Ended
	Sep. 30, 2020USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Percent of Federal Tax Deferred Cares Act	50.00%
FederalTaxDeferredCaresAct	$ 60.8

Acquisitions Business Combinati

Acquisitions Business Combinations Additional Information (Details) - USD ($) $ in Millions	Aug. 31, 2020	Jan. 24, 2020	Oct. 17, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Acquired Indefinite-lived Intangible Assets [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired				$ 151.5	$ 48.5
Contingent purchase consideration				6		$ 0
Business Acquisition, Description of Acquired Entity	headquartered in Boston, Massachusetts
Business Acquisition, Goodwill, Expected Tax Deductible Amount			$ 38.7
LeapFrog
Acquired Indefinite-lived Intangible Assets [Line Items]
Business Acquisition, Effective Date of Acquisition	Aug. 31, 2020
Business Acquisition, Name of Acquired Entity	LeapFrog Systems, Inc.
Payments to Acquire Businesses, Net of Cash Acquired	$ 66
Contingent purchase consideration	$ 6
Business Combination, Reason for Business Combination	acquisition deepens and expands the Company's capabilities in digital innovation and enterprise solutions for its financial services, insurance and healthcare clients
Goodwill, Acquired During Period	$ 42.4			42.4
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets	$ 35.1
BlackStone Federal
Acquired Indefinite-lived Intangible Assets [Line Items]
Business Acquisition, Effective Date of Acquisition		Jan. 24, 2020
Business Acquisition, Name of Acquired Entity		Blackstone Technology Group
Payments to Acquire Businesses, Net of Cash Acquired		$ 85.5
Business Acquisition, Description of Acquired Entity		headquartered in Arlington, Virginia
Business Combination, Reason for Business Combination		The acquisition expands the Company's capabilities in agile application development, cloud modernization and systems architecture, cybersecurity, user experience design and branding services to government clients
Goodwill, Acquired During Period		$ 61.1		$ 61.1
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets		$ 22.8
Intersys
Acquired Indefinite-lived Intangible Assets [Line Items]
Business Acquisition, Effective Date of Acquisition			Oct. 17, 2019
Business Acquisition, Name of Acquired Entity			Intersys Consulting, LLC
Payments to Acquire Businesses, Net of Cash Acquired			$ 67
Business Acquisition, Description of Acquired Entity			headquartered in Austin, Texas
Business Combination, Reason for Business Combination			The acquisition expands the Company's capabilities in digital innovation and enterprise solutions
Goodwill, Acquired During Period			$ 41.4			$ 41.4
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets			$ 23.8
Minimum [Member] | LeapFrog
Acquired Indefinite-lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	2 years
Minimum [Member] | BlackStone Federal
Acquired Indefinite-lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life		1 year
Minimum [Member] | Intersys
Acquired Indefinite-lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			3 years
Maximum [Member] | LeapFrog
Acquired Indefinite-lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years
Maximum [Member] | BlackStone Federal
Acquired Indefinite-lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life		9 years
Maximum [Member] | Intersys
Acquired Indefinite-lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			10 years

Goodwill and Identifiable Ass_3

Goodwill and Identifiable Assets (Goodwill) (Details) - USD ($) $ in Millions	Aug. 31, 2020	Jan. 24, 2020	Oct. 17, 2019	Sep. 30, 2020	Dec. 31, 2019	Dec. 31, 2018
Goodwill [Roll Forward]
Gross goodwill				$ 1,590.9	$ 1,486.9	$ 1,421.1
Translation adjustment				0.5	(0.3)
Apex
Goodwill [Roll Forward]
Gross goodwill				745.5	703.5	662.1
Translation adjustment				(0.4)
Oxford
Goodwill [Roll Forward]
Gross goodwill				231.4	230.5	230.8
Translation adjustment				0.9	(0.3)
ECS
Goodwill [Roll Forward]
Gross goodwill				614	552.9	$ 528.2
DHA
Goodwill [Roll Forward]
Goodwill, Acquired During Period					24.7
Intersys
Goodwill [Roll Forward]
Goodwill, Acquired During Period			$ 41.4		$ 41.4
BlackStone Federal
Goodwill [Roll Forward]
Goodwill, Acquired During Period		$ 61.1		61.1
LeapFrog
Goodwill [Roll Forward]
Goodwill, Acquired During Period	$ 42.4			$ 42.4

Goodwill and Identifiable Ass_4

Goodwill and Identifiable Assets (Acquired Intangible Assets) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Intangible assets subject to amortization:
Gross Carrying Amount	$ 583	$ 524.7
Accumulated Amortization	345.1	307.1
Net Carrying Amount	237.9	217.6
Intangible assets not subject to amortization:
Trademarks, Carrying Amount	258.9	258.9
Intangible Assets, Gross (Excluding Goodwill)	841.9	783.6
Intangible Assets, Net (Excluding Goodwill), Total	496.8	476.5
Customer and Contractual Relationships
Intangible assets subject to amortization:
Gross Carrying Amount	437.3	384.9
Accumulated Amortization	211.2	179.9
Net Carrying Amount	$ 226.1	205
Customer and Contractual Relationships | Minimum [Member]
Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	2 years
Customer and Contractual Relationships | Maximum [Member]
Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	12 years 9 months
Contractor Relations
Intangible assets subject to amortization:
Gross Carrying Amount	$ 71.1	71.1
Accumulated Amortization	70.9	70.6
Net Carrying Amount	$ 0.2	0.5
Contractor Relations | Minimum [Member]
Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	2 years
Contractor Relations | Maximum [Member]
Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	5 years
Backlog
Intangible assets subject to amortization:
Gross Carrying Amount	$ 28.3	25
Accumulated Amortization	27.1	23.9
Net Carrying Amount	$ 1.2	1.1
Backlog | Minimum [Member]
Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	1 year
Backlog | Maximum [Member]
Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	2 years 9 months
Noncompete Agreements
Intangible assets subject to amortization:
Gross Carrying Amount	$ 27.4	24.8
Accumulated Amortization	17	13.8
Net Carrying Amount	$ 10.4	11
Noncompete Agreements | Minimum [Member]
Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	2 years
Noncompete Agreements | Maximum [Member]
Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years
In-use software
Intangible assets subject to amortization:
Gross Carrying Amount	$ 18.9	18.9
Accumulated Amortization	18.9	18.9
Net Carrying Amount	$ 0	$ 0
In-use software | Minimum [Member]
Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	6 years

Goodwill and Identifiable Ass_5

Goodwill and Identifiable Assets (Future Amortization Expense) (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Remainder of 2020	$ 13.5
2021	46.6
2022	38.4
2023	33.5
2024	26.2
Thereafter	79.7
Net Carrying Amount	$ 237.9	$ 217.6

Long-term Debt (Details)

Long-term Debt (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Senior Notes	$ 550	$ 550
Long-term Debt, Gross	1,040.8	1,040.8
Unamortized deferred loan costs	(7.6)	(8.5)
Long-term Debt	1,033.2	1,032.3
Undrawn stand-by-letters of credit	3.9
$250 Million Revolving Credit Facility, Due November 2024 [Member]
Debt Instrument [Line Items]
Secured Debt	0	0
Line of Credit Facility, Maximum Borrowing Capacity	250
Term B Loan Facility, due 2025 [Member] [Domain]
Debt Instrument [Line Items]
Secured Debt	$ 490.8	$ 490.8
Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.625%
Notes Payable to Banks [Member] | $250 Million Revolving Credit Facility, Due November 2024 [Member] | Minimum [Member] | Bank base rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.25%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.20%
Notes Payable to Banks [Member] | $250 Million Revolving Credit Facility, Due November 2024 [Member] | Maximum [Member] | Bank base rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.25%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.35%
Notes Payable to Banks [Member] | Term B Loan Facility, due 2025 [Member] [Domain] | Bank base rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.75%
Notes Payable to Banks [Member] | LIBOR [Member] | $250 Million Revolving Credit Facility, Due November 2024 [Member] | Minimum [Member] | Bank base rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.25%
Notes Payable to Banks [Member] | LIBOR [Member] | $250 Million Revolving Credit Facility, Due November 2024 [Member] | Maximum [Member] | Bank base rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.25%
Notes Payable to Banks [Member] | LIBOR [Member] | Term B Loan Facility, due 2025 [Member] [Domain]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.75%

Commitments and Contingencies_2

Commitments and Contingencies (Details) $ in Millions	Sep. 30, 2020USD ($)property	Dec. 31, 2019USD ($)
Other Commitments [Line Items]
Deferred Compensation Liability, Classified, Noncurrent | $	$ 13.1	$ 11.8
Number of Leased Properties Owned by Related Parties | property	2

Revenues (Details)

Revenues (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Deferred Revenue	$ 6.8	$ 8.4

Calculation of Basic and Dilute

Calculation of Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Calculation of Basic and Diluted Earnings per Share [Abstract]
Net income	$ 52.3	$ 57.4	$ 144.9	$ 135.4
Weighted-average number of common shares outstanding - basic	52.5	52.8	52.6	52.7
Dilutive effect of share equivalents	0.5	0.6	0.5	0.7
Number of common shares and share equivalents outstanding - diluted	53	53.4	53.1	53.4
Basic earnings per share	$ 1	$ 1.09	$ 2.75	$ 2.57
Diluted earnings per share	$ 0.99	$ 1.08	$ 2.73	$ 2.54
Number of anti-dilutive share equivalents	0	0	0.2	0.2

Segment Reporting (Segment Repo

Segment Reporting (Segment Reporting Information) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues:
Revenues		$ 1,011.9	$ 1,002.7	$ 2,939.2	$ 2,898.7
Gross Profit:
Total Gross Profit		271	291.4	812.7	840.5
Operating Income (Loss):
Total Operating Income	[1]	80.9	90.9	227.8	226.9
Amortization of intangible assets		12.9	11.9	37.6	38.8
Apex
Revenues:
Revenues		596.1	644.1	1,802.1	1,878.7
Gross Profit:
Total Gross Profit		173	192.2	528.1	555.4
Operating Income (Loss):
Total Operating Income		69.4	79.2	202.3	213.1
Amortization of intangible assets		5.7	4	16.5	15.5
Oxford
Revenues:
Revenues		127.2	152.5	396.1	455.3
Gross Profit:
Total Gross Profit		52.1	61.9	157.8	183.3
Operating Income (Loss):
Total Operating Income		12.1	13.6	31	36.3
Amortization of intangible assets		0.2	1	0.5	3
ECS
Revenues:
Revenues		288.6	206.1	741	564.7
Gross Profit:
Total Gross Profit		45.9	37.3	126.8	101.8
Operating Income (Loss):
Total Operating Income		16.7	12.7	44.3	30.5
Amortization of intangible assets		7	6.9	20.6	20.3
Assignment | Apex
Revenues:
Revenues		492.2	544.7	1,502.3	1,598
Assignment | Oxford
Revenues:
Revenues		95.8	115.3	306.9	350
Consulting | Apex
Revenues:
Revenues		96.6	85.1	271.5	237
Consulting | Oxford
Revenues:
Revenues		14.1	15	38.4	41.1
Permanent Placement | Apex
Revenues:
Revenues		7.3	14.3	28.3	43.7
Permanent Placement | Oxford
Revenues:
Revenues		17.3	22.2	50.8	64.2
Firm-fixed-price | ECS
Revenues:
Revenues		82	64.4	201.2	153.8
Time and materials | ECS
Revenues:
Revenues		80.8	68.4	234.6	200.6
Cost reimbursable | ECS
Revenues:
Revenues		$ 125.8	$ 73.3	$ 305.2	$ 210.3
[1]	___________________ (1) Consolidated operating income includes corporate operating expenses, which are not allocated to the segments, consisting of consolidated stock-based compensation expense, compensation for corporate employees, acquisition, integration and strategic planning expenses, public company expenses and depreciation expense for corporate assets.

Segment Reporting Revenue by Cu

Segment Reporting Revenue by Customer Type (details) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenue from External Customer [Line Items]
Revenues	$ 1,011.9	$ 1,002.7	$ 2,939.2	$ 2,898.7
Department of Defense and Intelligence Agencies
Revenue from External Customer [Line Items]
Revenues	172	112.6	414.4	316.2
Federal Civilian
Revenue from External Customer [Line Items]
Revenues	96.2	82	276.1	213.5
Other
Revenue from External Customer [Line Items]
Revenues	20.4	11.5	50.5	35
ECS
Revenue from External Customer [Line Items]
Revenues	$ 288.6	$ 206.1	$ 741	$ 564.7

Fair Value Measurements (Fair V

Fair Value Measurements (Fair Value Inputs, Liabilities, Quantitative Information) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Fair Value Inputs, Liabilities, Quantitative Information
Long-term Debt	$ 1,033.2	$ 1,032.3
Level 1 Inputs
Fair Value Inputs, Liabilities, Quantitative Information
Fair value level 1 inputs	quoted prices in active markets for identical liabilities (Level 1 inputs
Fair Value Measured at Net Asset Value Per Share [Member]
Fair Value Inputs, Liabilities, Quantitative Information
Deferred Compensation Plan Assets	$ 13.1	$ 11.8