CACI International (CACI) 10-Q1 Feb 192019 Q2 Quarterly reportFinancial data

Company Profile

Document And Entity Information

Document And Entity Information - shares	6 Months Ended
Document And Entity Information - shares	Dec. 31, 2018	Jan. 22, 2019
Document And Entity Information [Abstract]
Entity Registrant Name	CACI INTERNATIONAL INC /DE/
Entity Central Index Key	16,058
Trading Symbol	caci
Current Fiscal Year End Date	--06-30
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		24,862,624
Document Type	10-Q
Document Period End Date	Dec. 31, 2018
Amendment Flag	false
Document Fiscal Year Focus	2,019
Document Fiscal Period Focus	Q2

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Income Statement [Abstract]
Revenue	$ 1,181,641	$ 1,087,860	$ 2,347,505	$ 2,173,674
Costs of revenue:
Direct costs	790,849	727,160	1,573,609	1,466,838
Indirect costs and selling expenses	269,677	254,180	534,434	515,424
Depreciation and amortization	18,852	18,258	37,599	35,846
Total costs of revenue	1,079,378	999,598	2,145,642	2,018,108
Income from operations	102,263	88,262	201,863	155,566
Interest expense and other, net	9,421	10,956	18,307	22,203
Income before income taxes	92,842	77,306	183,556	133,363
Income tax expense (benefit)	24,246	(65,489)	36,127	(51,478)
Net income	$ 68,596	$ 142,795	$ 147,429	$ 184,841
Basic earnings per share	$ 2.76	$ 5.80	$ 5.95	$ 7.53
Diluted earnings per share	$ 2.71	$ 5.66	$ 5.81	$ 7.33
Weighted-average basic shares outstanding	24,856	24,622	24,796	24,555
Weighted-average diluted shares outstanding	25,338	25,211	25,381	25,228

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 68,596	$ 142,795	$ 147,429	$ 184,841
Other comprehensive income (loss):
Foreign currency translation adjustment	(3,436)	1,191	(5,431)	5,554
Change in fair value of interest rate swap agreements, net of tax	(3,778)	2,613	(3,561)	3,121
Other comprehensive income (loss), net of tax	(7,214)	3,804	(8,992)	8,675
Comprehensive income	$ 61,382	$ 146,599	$ 138,437	$ 193,516

CONSOLIDATED BALANCE SHEETS (UN

CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Dec. 31, 2018		Jun. 30, 2018
Current assets:
Cash and cash equivalents	$ 70,728		$ 66,194
Accounts receivable, net	1,016,968		806,871
Prepaid expenses and other current assets	69,717		58,126
Total current assets	1,157,413		931,191
Goodwill	2,659,749		2,620,835
Intangible assets, net	230,556	[1]	241,755
Property and equipment, net	107,125		101,140
Supplemental retirement savings plan assets	88,037		91,490
Accounts receivable, long-term	8,741		8,620
Other long-term assets	38,997		39,175
Total assets	4,290,618		4,034,206
Current liabilities:
Current portion of long-term debt	46,920		46,920
Accounts payable	197,225		82,017
Accrued compensation and benefits	232,550		259,442
Other accrued expenses and current liabilities	160,361		150,602
Total current liabilities	637,056		538,981
Long-term debt, net of current portion	1,008,116		1,015,420
Supplemental retirement savings plan obligations, net of current portion	88,736		86,851
Deferred income taxes	215,451		200,880
Other long-term liabilities	84,526		85,187
Total liabilities	2,033,885		1,927,319
COMMITMENTS AND CONTINGENCIES
Shareholders’ equity:
Preferred stock $0.10 par value, 10,000 shares authorized, no shares issued or outstanding
Common stock $0.10 par value, 80,000 shares authorized; 42,296 shares issued and 24,862 outstanding at December 31, 2018 and 42,139 shares issued and 24,704 outstanding at June 30, 2018	4,230		4,214
Additional paid-in capital	564,586		570,964
Retained earnings	2,291,989		2,126,790
Accumulated other comprehensive loss	(28,022)		(19,030)
Treasury stock, at cost (17,434 and 17,434 shares, respectively)	(576,185)		(576,186)
Total CACI shareholders’ equity	2,256,598		2,106,752
Noncontrolling interest	135		135
Total shareholders’ equity	2,256,733		2,106,887
Total liabilities and shareholders’ equity	$ 4,290,618		$ 4,034,206

[1]	During the six months ended December 31, 2018, the Company removed $0.2 million in fully amortized intangible assets.

CONSOLIDATED BALANCE SHEETS (_2

CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parentheticals) - $ / shares	Dec. 31, 2018	Jun. 30, 2018
Statement Of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.10	$ 0.10
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized	80,000,000	80,000,000
Common stock, shares issued	42,296,000	42,139,000
Common stock, shares outstanding	24,862,000	24,704,000
Treasury stock, shares at cost	17,434,000	17,434,000

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 147,429	$ 184,841
Reconciliation of net income to net cash provided by operating activities:
Depreciation and amortization	37,599	35,846
Amortization of deferred financing costs	1,156	2,212
Stock-based compensation expense	12,047	12,389
Deferred income taxes	9,123	(83,212)
Changes in operating assets and liabilities, net of effect of business acquisitions:
Accounts receivable, net	(136,177)	7,367
Prepaid expenses and other assets	(2,739)	(13,774)
Accounts payable and other accrued expenses	110,007	15,190
Accrued compensation and benefits	(27,116)	(11,126)
Income taxes payable and receivable	(10,781)	(3,796)
Long-term liabilities	(1,008)	6,157
Net cash provided by operating activities	139,540	152,094
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(17,813)	(22,013)
Cash paid for business acquisitions, net of cash acquired	(91,151)	(45,565)
Other	1,876	3,484
Net cash used in investing activities	(107,088)	(64,094)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from borrowings under bank credit facilities	833,500	256,500
Principal payments made under bank credit facilities	(841,960)	(338,483)
Payment of contingent consideration	(616)	(3,630)
Proceeds from employee stock purchase plans	2,827	2,459
Repurchases of common stock	(2,756)	(2,463)
Payment of taxes for equity transactions	(18,039)	(12,656)
Net cash used in financing activities	(27,044)	(98,273)
Effect of exchange rate changes on cash and cash equivalents	(874)	1,062
Net increase (decrease) in cash and cash equivalents	4,534	(9,211)
Cash and cash equivalents, beginning of period	66,194	65,539
Cash and cash equivalents, end of period	70,728	56,328
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Cash paid during the period for income taxes, net of refunds	39,975	35,264
Cash paid during the period for interest	18,830	20,505
Non-cash financing and investing activities:
Landlord sponsored tenant improvement	3,518
Accrued capital expenditures	$ 1,377	$ 3,316

Basis of Presentation

Basis of Presentation	6 Months Ended
Basis of Presentation	Dec. 31, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Presentation	1. Basis of Presentation The accompanying unaudited consolidated financial statements of CACI International Inc and subsidiaries (CACI or the Company) have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (SEC) and include the assets, liabilities, results of operations, comprehensive income and cash flows for the Company, including its subsidiaries and ventures that are majority-owned or otherwise controlled by the Company. Certain information and note disclosures normally included in the annual financial statements prepared in accordance with U.S. generally accepted accounting principles (GAAP) have been condensed or omitted pursuant to those rules and regulations, although the Company believes that the disclosures made are adequate to make the information presented not misleading. All intercompany balances and transactions have been eliminated in consolidation. The carrying amounts of cash and cash equivalents, accounts receivable, accounts payable and amounts included in other current assets and current liabilities that meet the definition of a financial instrument approximate fair value because of the short-term nature of these amounts. The fair value of the Company’s debt outstanding as of December 31, 2018 under its bank credit facility approximates its carrying value. The fair value of the Company’s debt under its bank credit facility was estimated using Level 2 inputs based on market data of companies with a corporate rating similar to CACI’s that have recently priced credit facilities. See Notes 10 and 16. In the opinion of management, the accompanying unaudited consolidated financial statements reflect all adjustments and reclassifications (all of which are of a normal, recurring nature) that are necessary for the fair presentation of the periods presented. It is suggested that these unaudited consolidated financial statements be read in conjunction with the audited consolidated financial statements and the notes thereto included in the Company’s latest annual report to the SEC on Form 10-K for the year ended June 30, 2018. The results of operations for the three and six months ended December 31, 2018 are not necessarily indicative of the results to be expected for any subsequent interim period or for the full fiscal year. Certain reclassifications have been made to the prior period’s financial statements to conform to the current presentation.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	6 Months Ended
Recent Accounting Pronouncements	Dec. 31, 2018
New Accounting Pronouncements And Changes In Accounting Principles [Abstract]
Recent Accounting Pronouncements	2. Recent Accounting Pronouncements In August 2018, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2018-15, Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract In March 2017, the FASB issued ASU 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost In August 2016, the FASB issued ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments In February 2016, the FASB issued ASU 2016-02, Leases In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers Effective July 1, 2018, we adopted ASC 606 using the modified retrospective method, whereby the cumulative effect of applying the standard was recognized through shareholders’ equity on the date of adoption. In addition, for our fiscal year ending June 30, 2019 and the interim reporting periods therein, the Company is required to disclose the amount by which each financial statement line item was affected by the new standard. The Company’s comparative information, for prior periods presented before July 1, 2018, has not been restated and continues to be reported under ASC 605. The impact of adoption on our consolidated balance sheet is as follows (in thousands): June 30, 2018 As Reported Under ASC 605 Adjustments Due to ASC 606 July 1, 2018 Balance Under ASC 606 Assets: Accounts receivable, net $ 806,871 $ 20,454 $ 827,325 Prepaid expenses and other current assets 58,126 2,342 60,468 Other long-term assets 39,175 3,923 43,098 Liabilities and Shareholders' Equity: Other accrued expenses and current liabilities 150,602 2,212 152,814 Deferred income taxes 200,880 6,639 207,519 Other long-term liabilities 85,187 98 85,285 Retained earnings 2,126,790 17,770 2,144,560 ASC 606 changed the pattern of revenue recognition for some of our contracts with customers. For our award and incentive fee contracts, we now recognize a constrained amount of variable consideration throughout the performance period rather than defer recognition of the relevant portion of fee until customer notification of the amount earned. Some of our fixed price services-type contracts in which revenue was previously recognized on a straight-line basis over the performance period converted to recognition of revenue using a cost-to-cost input method to measure our progress towards the complete satisfaction of the performance obligation. The cumulative effect of these changes in the pattern of revenue recognition resulted in an increase to accounts receivable, net with an offset to retained earnings. In addition, ASC 606 changed the timing of revenue recognition for license renewal performance obligations. Under prior GAAP, license renewals were generally recognized in the period the renewal contract was executed. However, upon adoption of ASC 606, the consideration received for a license renewal may not be recognized until the start of the term of the renewal. The cumulative effect of this change resulted in an increase to contract liabilities with an offset to retained earnings. The adoption of ASC 606 did not have a material impact on the Company’s revenue recognition for cost-plus-fee, fixed price/level-of-effort, time-and-materials (T&M), fixed price contracts previously recognized under ASC 605-35, and fixed price product revenue arrangements. Under ASC 340-40, the Company capitalizes certain costs to fulfill and obtain a contract. The cumulative effect of this change resulted in an increase to contract assets with an offset to retained earnings. These capitalized costs are amortized over the period of contract performance as revenue is recognized from the transfer of goods or services and the underlying performance obligation is satisfied. The table below presents the impact of adoption of ASC 606 on our consolidated statement of operations for the three and six months ended December 31, 2018 (in thousands): Three Months Ended Six Months Ended December 31, 2018 December 31, 2018 As Adjusted Under ASC 605 Effect of ASC 606 As Reported Under ASC 606 As Adjusted Under ASC 605 Effect of ASC 606 As Reported Under ASC 606 Revenue $ 1,177,635 $ 4,006 $ 1,181,641 $ 2,336,337 $ 11,168 $ 2,347,505 Costs of revenue: Direct costs 790,849 — 790,849 1,573,609 — 1,573,609 Indirect costs and selling expenses 270,997 (1,320 ) 269,677 535,697 (1,263 ) 534,434 Depreciation and amortization 18,852 — 18,852 37,599 — 37,599 Total costs of revenue 1,080,698 (1,320 ) 1,079,378 2,146,905 (1,263 ) 2,145,642 Income from operations 96,937 5,326 102,263 189,432 12,431 201,863 Interest expense and other, net 9,421 — 9,421 18,307 — 18,307 Income before taxes 87,516 5,326 92,842 171,125 12,431 183,556 Income tax expense 22,858 1,388 24,246 32,945 3,182 36,127 Net income $ 64,658 $ 3,938 $ 68,596 $ 138,180 $ 9,249 $ 147,429 Basic earnings per share $ 2.60 $ 0.16 $ 2.76 $ 5.57 $ 0.37 $ 5.95 Diluted earnings per share $ 2.55 $ 0.16 $ 2.71 $ 5.44 $ 0.36 $ 5.81 For the three and six months ended December 31, 2018, the effect of ASC 606 was primarily related to the timing of award and incentive fee revenue recognition. The table below presents the impact of adoption of ASC 606 on our consolidated balance sheet as of December 31, 2018 (in thousands): As Adjusted Under ASC 605 Effect of ASC 606 As Reported Under ASC 606 Assets: Accounts receivable, net $ 987,494 $ 29,474 $ 1,016,968 Prepaid expenses and other current assets 67,077 2,640 69,717 Other long-term assets 34,109 4,888 38,997 Liabilities and Shareholders' Equity: Other accrued expenses and current liabilities 156,538 3,823 160,361 Deferred income taxes 209,291 6,160 215,451 Other long-term liabilities 84,526 — 84,526 Retained earnings 2,264,970 27,019 2,291,989

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
Summary of Significant Accounting Policies	Dec. 31, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	3. Summary of Significant Accounting Policies Revenue Recognition The Company generates almost all of our revenue from three different types of contractual arrangements with the U.S. government: cost-plus-fee, time-and-materials (T&M), and fixed-price contracts. Our contracts with the U.S. government are generally subject to the Federal Acquisition Regulation (FAR) and are competitively priced based on estimated costs of providing the contractual goods or services. We account for a contract when the parties have approved the contract and are committed to perform on it, the rights of each party and the payment terms are identified, the contract has commercial substance, and it is probable that we will collect substantially all of the consideration. At contract inception, the Company determines whether the goods or services to be provided are to be accounted for as a single performance obligation or as multiple performance obligations. This evaluation requires significant professional judgment as it may impact the timing and pattern of revenue recognition. If multiple performance obligations are identified, we generally use the cost plus a margin approach to determine the relative standalone selling price of each performance obligation. When determining the total transaction price, the Company identifies both fixed and variable consideration elements within the contract. Variable consideration includes any amount within the transaction price that is not fixed, such as: award or incentive fees; performance penalties; unfunded contract value; or other similar items. For our contracts with award or incentive fees, the Company estimates the total amount of award or incentive fee expected to be recognized into revenue. Throughout the performance period, we recognize as revenue a constrained amount of variable consideration only to the extent that it is probable that a significant reversal of the cumulative amount recognized to date will not be required in a subsequent period. Our estimate of variable consideration is periodically adjusted based on significant changes in relevant facts and circumstances. In the period in which we can calculate the final amount of award or incentive fee earned - based on the receipt of the customer’s final performance score or determining that more objective, contractually-defined criteria have been fully satisfied - the Company will adjust our cumulative revenue recognized to date on the contract. This adjustment to revenue will be disclosed as the amount of revenue recognized in the current period for a previously satisfied performance obligation. We generally recognize revenue over time throughout the performance period as the customer simultaneously receives and consumes the benefits provided on our services-type revenue arrangements. This continuous transfer of control for our U.S. government contracts is supported by the unilateral right of our customer to terminate the contract for a variety of reasons without having to provide justification for its decision. For our services-type revenue arrangements in which there are a repetitive amount of services that are substantially the same from one month to the next, the Company applies the series guidance. We use a variety of input and output methods that approximate the progress towards complete satisfaction of the performance obligation, including: costs incurred, labor hours expended, and time-elapsed measures for our fixed-price stand ready obligations. For certain contracts, primarily our cost-plus and T&M services-type revenue arrangements, we apply the right-to-invoice practical expedient in which revenue is recognized in direct proportion to our present right to consideration for progress towards the complete satisfaction of the performance obligation. When a performance obligation has a significant degree of interrelation or interdependence between one month’s deliverables and the next, when there is an award or incentive fee, or when there is a significant degree of customization or modification, the Company generally records revenue using a percentage of completion methodology. For these revenue arrangements, substantially all revenue is recognized over time using a cost-to-cost input method based on the ratio of costs incurred to date to total estimated costs at completion. When estimates of total costs to be incurred on a contract exceed total revenue, a provision for the entire loss on the contract is recorded in the period in which the loss is determined. Contract modifications are reviewed to determine whether they should be accounted for as part of the original performance obligation or as a separate contract. When a contract modification changes the scope or price and the additional performance obligations are at their standalone selling price, the original contract is terminated and the Company accounts for the change prospectively when the new goods or services to be transferred are distinct from those already provided. When the contract modification includes goods or services that are not distinct from those already provided, the Company records a cumulative adjustment to revenue based on a remeasurement of progress towards the complete satisfaction of the not yet fully delivered performance obligation. Based on the critical nature of our contractual performance obligations, the Company may proceed with work based on customer direction prior to the completion and signing of formal contract documents. The Company has a formal review process for approving any such work that considers previous experiences with the customer, communications with the customer regarding funding status, and our knowledge of available funding for the contract or program. Contract Assets Contract assets include unbilled receivables in which our right to consideration is conditional on factors other than the passage of time. Contract assets exclude billed and billable receivables. In addition, the costs to fulfill a contract are considered for capitalization based on contract specific facts and circumstances. The incremental costs to fulfill a contract (e.g. ramp up costs at the beginning of the period of performance) may be capitalized when expenses are incurred prior to satisfying a performance obligation. The incremental costs of obtaining a contract (e.g. sales commissions) are capitalized as an asset when the Company expects to recover them either directly or indirectly through the revenue arrangement’s profit margins. These capitalized costs are subsequently expensed over the revenue arrangement’s period of performance. The Company has elected to apply the practical expedient to immediately expense the costs to obtain a contract when the performance obligation will be completed within twelve months of contract inception. Contract assets are periodically reassessed based on reasonably available information as of the balance sheet date to ensure they do not exceed their net realizable value. Contract Liabilities Contract liabilities include advance payments received from the customer in excess of revenue that may be recognized as of the balance sheet date. The advance payment is then subsequently recognized into revenue as the performance obligation is satisfied. Remaining Performance Obligations The Company’s remaining performance obligations balance represents the expected revenue to be recognized for the satisfaction of remaining performance obligations on our existing contracts as of period end. The remaining performance obligations balance excludes unexercised contract option years and task orders that may be issued underneath an Indefinite Delivery/Indefinite Quantity (IDIQ) vehicle. The remaining performance obligations balance generally increases with the execution of new contracts and converts into revenue as our contractual performance obligations are satisfied. The Company continues to monitor our remaining performance obligations balance as it is subject to change from execution of new contracts, contract modifications or extensions, government deobligations, or early terminations. Based on this analysis, an adjustment to the period end balance may be required.

Acquisitions

Acquisitions	6 Months Ended
Acquisitions	Dec. 31, 2018
Business Combinations [Abstract]
Acquisitions	4. Acquisitions Domestic Acquisition On August 15, 2018, CACI acquired certain assets of the systems engineering and acquisition support services business unit (SE&A BU) of CSRA LLC, a managed affiliate of General Dynamics Information Technology, Inc. The initial purchase consideration paid at closing to acquire the SE&A BU was $84.0 million plus $6.0 million representing a preliminary net working capital adjustment. Subsequent to closing, CACI estimated that an additional payment may be due to the sellers for the final net working capital adjustment. The Company recognized fair values of the assets acquired and liabilities assumed and allocated $42.6 million to goodwill and $8.9 million to intangible assets. The intangible assets consist of customer relationships. The final purchase price allocation, which is provisional and is expected to be completed by Q1 FY2020, will be based on final appraisals and other analysis of fair values of acquired assets and liabilities. The Company does not expect that differences between the preliminary and final purchase price allocation will have a material impact on its results of operations or financial position.

Intangible Assets

Intangible Assets	6 Months Ended
Intangible Assets	Dec. 31, 2018
Finite Lived Intangible Assets Net [Abstract]
Intangible Assets	5. Intangible Assets Intangible assets consisted of the following (in thousands): December 31, June 30, 2018 (1) 2018 Intangible assets: Customer contracts and related customer relationships $ 444,221 $ 435,933 Acquired technologies 13,165 13,237 Other 800 804 Intangible assets 458,186 449,974 Less accumulated amortization: Customer contracts and related customer relationships (217,673 ) (199,018 ) Acquired technologies (9,484 ) (8,761 ) Other (473 ) (440 ) Less accumulated amortization (227,630 ) (208,219 ) Total intangible assets, net $ 230,556 $ 241,755 __________________ (1) During the six months ended December 31, 2018, the Company removed $0.2 million in fully amortized intangible assets. Intangible assets are primarily amortized on an accelerated basis over periods ranging from one to twenty years. The weighted-average period of amortization for all customer contracts and related customer relationships as of December 31, 2018 is 15.0 years, and the weighted-average remaining period of amortization is 11.5 years. The weighted-average period of amortization for acquired technologies as of December 31, 2018 is 7.0 years, and the weighted-average remaining period of amortization is 5.4 years. Expected amortization expense for the remainder of the fiscal year ending June 30, 2019, and for each of the fiscal years thereafter, is as follows (in thousands): Fiscal year ending June 30, Amount 2019 (six months) $ 17,165 2020 32,440 2021 28,767 2022 25,000 2023 22,336 Thereafter 104,848 Total intangible assets, net $ 230,556

Goodwill

Goodwill	6 Months Ended
Goodwill	Dec. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill	6 . Goodwill The changes in the carrying amount of goodwill for the year ended June 30, 2018 and the six months ended December 31, 2018 are as follows (in thousands): Domestic International Total Balance at June 30, 2017 $ 2,479,496 $ 97,939 $ 2,577,435 Goodwill acquired (1) 35,024 6,867 41,891 Foreign currency translation — 1,509 1,509 Balance at June 30, 2018 2,514,520 106,315 2,620,835 Goodwill acquired (1) 42,704 (99 ) 42,605 Foreign currency translation — (3,691 ) (3,691 ) Balance at December 31, 2018 $ 2,557,224 $ 102,525 $ 2,659,749 (1) Includes goodwill initially allocated to new business combinations as well as measurement period adjustments.

Revenue Recognition

Revenue Recognition	6 Months Ended
Revenue Recognition	Dec. 31, 2018
Revenue From Contract With Customer [Abstract]
Revenue Recognition	7. Revenue Recognition We disaggregate our revenue arrangements by contract type, customer, and whether the Company performs on the contract as the prime or subcontractor. We believe that these categories allow for a better understanding of the nature, amount, timing, and uncertainty of revenue and cash flows arising from our contracts. Revenue by Contract Type The Company generated revenue on our cost-plus-fee, firm fixed-price (including proprietary software product sales), and time-and-materials contracts as follows during the three and six months ended December 31, 2018 (in thousands): Three Months Ended Six Months Ended December 31, 2018 December 31, 2018 Domestic International Total Domestic International Total Cost-plus-fee $ 657,050 $ — $ 657,050 $ 1,298,577 $ — $ 1,298,577 Firm fixed-price 313,018 24,356 337,374 634,089 47,289 681,378 Time and materials 172,484 14,733 187,217 336,409 31,141 367,550 Total $ 1,142,552 $ 39,089 $ 1,181,641 $ 2,269,075 $ 78,430 $ 2,347,505 Customer Information The Company generated revenue from our primary customer groups as follows during the three and six months ended December 31, 2018 (in thousands): Three Months Ended Six Months Ended December 31, 2018 December 31, 2018 Domestic International Total Domestic International Total Department of Defense $ 834,797 $ — $ 834,797 $ 1,653,063 $ — $ 1,653,063 Federal civilian agencies 287,915 — 287,915 580,117 — 580,117 Commercial and other 19,840 39,089 58,929 35,895 78,430 114,325 Total $ 1,142,552 $ 39,089 $ 1,181,641 $ 2,269,075 $ 78,430 $ 2,347,505 Prime or Subcontractor The Company generated revenue as either the prime or subcontractor as follows during the three and six months ended December 31, 2018 (in thousands): Three Months Ended Six Months Ended December 31, 2018 December 31, 2018 Domestic International Total Domestic International Total Prime contractor $ 1,052,867 $ 39,089 $ 1,091,956 $ 2,103,398 $ 78,430 $ 2,181,828 Subcontractor 89,685 — 89,685 165,677 — 165,677 Total $ 1,142,552 $ 39,089 $ 1,181,641 $ 2,269,075 $ 78,430 $ 2,347,505 Significant Estimates The Company uses an estimate at completion (EAC) as the basis to measure progress towards the complete satisfaction of our contractual performance obligations, for each of our contracts in which revenue is recognized using a percentage of completion calculation. The EAC process requires the Company to use professional judgment when assessing risks, estimating contract revenue and costs, estimating variable consideration, and making assumptions for schedule and technical issues. Based on changes in a contract’s EAC, a cumulative adjustment to revenue will be recorded. During the three and six months ended December 31, 2018, we recognized an increase to income before income taxes of $4.2 million ($0.12 per diluted share) and $10.6 million ($0.31 per diluted share), respectively, from EAC adjustments primarily related to the final true-up of firm fixed-price contracts. The Company used its statutory tax rate when calculating the impact to diluted earnings per share. The Company records final true-up adjustments to our estimated award or incentive fees in the period in which we receive the customer’s final performance score or when we can determine that more objective, contractually-defined criteria have been fully satisfied. These final true-up adjustments are disclosed as revenue recognized from previously satisfied performance obligations. For the three and six months ended December 31, 2018, the revenue recognized from previously satisfied performance obligations was not material. Remaining Performance Obligations The Company’s remaining performance obligations balance as of period end represents the expected revenue to be recognized for the satisfaction of remaining performance obligations on our existing contracts. This balance excludes unexercised contract option years and task orders that may be issued underneath an IDIQ vehicle. Our remaining performance obligations balance as of December 31, 2018 was $5.3 billion. The Company expects to recognize approximately 86 percent of our remaining performance obligations balance as revenue over the next year and the remaining 14 percent thereafter.

Contract Balances

Contract Balances	6 Months Ended
Contract Balances	Dec. 31, 2018
Revenue From Contract With Customer [Abstract]
Contract Balances	8. Contract Balances Contract assets are primarily comprised of conditional unbilled receivables in which revenue has been recognized but an invoice has not yet been issued to the customer as of the balance sheet date. Contract assets exclude billed and billable receivables and are not stated above their net realizable value. Contract liabilities are primarily comprised of advance payments in which consideration is received in advance of satisfying a performance obligation. Net contract assets (liabilities) consisted of the following (in thousands): December 31, July 1, Description of Contract Related Balance Financial Statement Classification 2018 2018 (1) Contract assets – current: Unbilled receivables Accounts receivable, net $ 77,464 $ 72,511 Costs to obtain – short-term Prepaid expenses and other current assets 2,640 2,342 Contract assets – noncurrent: Unbilled receivables Accounts receivable, long-term 8,741 8,620 Costs to obtain – long-term Other long-term assets 4,888 3,923 Contract liabilities – current: Deferred revenue Other accrued expenses and current liabilities (49,844 ) (43,940 ) Contract liabilities – noncurrent: Deferred revenue Other long-term liabilities (5,294 ) (4,740 ) Net contract assets (liabilities) $ 38,595 $ 38,716 (1) Includes the cumulative effect to the Company’s opening balance sheet from the adoption of ASU 2014-09, Revenue from Contracts with Customers During the three and six months ended December 31, 2018, we recognized $5.5 million and $22.6 million of revenue, respectively, that was included in a previously recorded contract liability as of the beginning of the period.

Sales of Receivables

Sales of Receivables	6 Months Ended
Sales of Receivables	Dec. 31, 2018
Transfers And Servicing Of Financial Assets [Abstract]
Sales of Receivables	9. Sales of Receivables On December 28, 2018, the Company entered into a Master Accounts Receivable Purchase Agreement (MARPA Facility) with MUFG Bank, Ltd., for the sale of certain designated eligible U.S. government receivables. The MARPA Facility has an initial term of one year. Under the MARPA Facility, the Company can sell eligible receivables, including certain billed and unbilled receivables up to a maximum amount of $200.0 million. The Company’s receivables are sold to the MARPA Facility without recourse for any U.S. government credit risk. There were no sales under the MARPA Facility as of December 31, 2018. The first sales under the MARPA Facility occurred during the third quarter of FY2019. The Company accounts for receivable transfers under the MARPA Facility as sales under ASC 860, Transfers and Servicing The Company does not retain an ongoing financial interest in the transferred receivables other than cash collection and administrative services.

Long-term Debt

Long-term Debt	6 Months Ended
Long-term Debt	Dec. 31, 2018
Long Term Debt [Abstract]
Long-term Debt	10 . Long-term Debt Long-term debt consisted of the following (in thousands): December 31, June 30, 2018 2018 Bank credit facility – term loans $ 914,934 $ 938,394 Bank credit facility – revolver loans 150,000 135,000 Principal amount of long-term debt 1,064,934 1,073,394 Less unamortized discounts and debt issuance costs (9,898 ) (11,054 ) Total long-term debt 1,055,036 1,062,340 Less current portion (46,920 ) (46,920 ) Long-term debt, net of current portion $ 1,008,116 $ 1,015,420 Bank Credit Facility The Company has a $2,038.4 million credit facility (the Credit Facility), which consists of an $1,100.0 million revolving credit facility (the Revolving Facility) and a $938.4 million term loan (the Term Loan). The Revolving Facility has subfacilities of $100.0 million for same-day swing line loan borrowings and $25.0 million for stand-by letters of credit. At any time and so long as no default has occurred, the Company has the right to increase the Revolving Facility or the Term Loan in an aggregate principal amount of up to the greater of $400.0 million or an amount subject to 2.75 times senior secured leverage, calculated assuming the Revolving Facility is fully drawn, with applicable lender approvals. The Credit Facility is available to refinance existing indebtedness and for general corporate purposes, including working capital expenses and capital expenditures. The Revolving Facility is a secured facility that permits continuously renewable borrowings of up to $1,100.0 million. As of December 31, 2018, the Company had $150.0 million outstanding under the Revolving Facility and no borrowings on the swing line. The Company pays a quarterly facility fee for the unused portion of the Revolving Facility. The Term Loan is a five-year secured facility under which principal payments are due in quarterly installments of $11.7 million through June 30, 2021 and $23.5 million thereafter until the balance is due in full on June 30, 2023. As of December 31, 2018, the Company had $914.9 million outstanding under the Term Loan. The interest rates applicable to loans under the Credit Facility are floating interest rates that, at the Company’s option, equal a base rate or a Eurodollar rate plus, in each case, an applicable rate based upon the Company’s consolidated total leverage ratio. As of December 31, 2018, the effective interest rate, including the impact of the Company’s floating-to-fixed interest rate swap agreements and excluding the effect of amortization of debt financing costs, for the outstanding borrowings under the Credit Facility was 3.27 percent. The Credit Facility requires the Company to comply with certain financial covenants, including a maximum senior secured leverage ratio, a maximum total leverage ratio and a minimum fixed charge coverage ratio. The Credit Facility also includes customary negative covenants restricting or limiting the Company’s ability to guarantee or incur additional indebtedness, grant liens or other security interests to third parties, make loans or investments, transfer assets, declare dividends or redeem or repurchase capital stock or make other distributions, prepay subordinated indebtedness and engage in mergers, acquisitions or other business combinations, in each case except as expressly permitted under the Credit Facility. As of December 31, 2018, the Company was in compliance with all of the financial covenants. A majority of the Company’s assets serve as collateral under the Credit Facility. All debt issuance costs are being amortized from the date incurred to the expiration date of the Credit Facility. On January 17, 2019, CACI exercised the accordion feature under its Credit Facility, increasing the capacity of the Revolving Facility by $400.0 million. As a result, the Revolving Facility capacity has increased from $1.1 billion to $1.5 billion. Cash Flow Hedges The Company periodically uses derivative financial instruments as part of a strategy to manage exposure to market risks associated with interest rate fluctuations. The Company has entered into several floating-to-fixed interest rate swap agreements for an aggregate notional amount of $700.0 million which hedge a portion of the Company’s floating rate indebtedness. The swaps mature at various dates through 2022. The Company has designated the swaps as cash flow hedges. Unrealized gains are recognized as assets while unrealized losses are recognized as liabilities. The interest rate swap agreements are highly correlated to the changes in interest rates to which the Company is exposed. Unrealized gains and losses on these swaps are designated as effective or ineffective. Realized gains and losses in connection with each required interest payment are reclassified from accumulated other comprehensive income or loss to interest expense. The Company does not hold or issue derivative financial instruments for trading purposes. The effect of derivative instruments in the consolidated statements of operations and accumulated other comprehensive loss for the three and six months ended December 31, 2018 and 2017 is as follows (in thousands): Three Months Ended Six Months Ended December 31, December 31, 2018 2017 2018 2017 Gain (loss) recognized in other comprehensive income $ (2,598 ) $ 1,867 $ (1,573 ) $ 1,521 Amounts reclassified to earnings from accumulated other comprehensive loss (1,180 ) 746 (1,988 ) 1,600 Net current period other comprehensive income $ (3,778 ) $ 2,613 $ (3,561 ) $ 3,121 The aggregate maturities of long-term debt at December 31, 2018 are as follows (in thousands): Twelve months ending December 31, 2019 $ 46,920 2020 46,920 2021 70,380 2022 93,839 2023 806,875 Principal amount of long-term debt 1,064,934 Less unamortized discounts and debt issuance costs (9,898 ) Total long-term debt $ 1,055,036

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
Commitments and Contingencies	Dec. 31, 2018
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	1 1 . Commitments and Contingencies The Company is involved in various lawsuits, claims, and administrative proceedings arising in the normal course of business. Management is of the opinion that any liability or loss associated with such matters, either individually or in the aggregate, will not have a material adverse effect on the Company’s operations and liquidity. Government Contracting Payments to the Company on cost-plus-fee and T&M contracts are subject to adjustment upon audit by the Defense Contract Audit Agency (DCAA) and other government agencies that do not utilize DCAA’s services. The DCAA is nearing completion of audits of the Company’s annual incurred cost submissions through fiscal year 2016 and is auditing the Company’s incurred cost submissions for its fiscal year 2017. We are still negotiating the results of prior years’ audits with the respective cognizant contracting officers and believe our reserves for such are adequate. In the opinion of management, adjustments that may result from these audits and the audits not yet started are not expected to have a material effect on the Company’s financial position, results of operations, or cash flows as the Company has accrued its best estimate of potential disallowances. Additionally, the DCAA continually reviews the cost accounting and other practices of government contractors, including the Company. In the course of those reviews, cost accounting and other issues are identified, discussed and settled.

Stock-Based Compensation

Stock-Based Compensation	6 Months Ended
Stock-Based Compensation	Dec. 31, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Compensation	1 2 . Stock-Based Compensation Stock-based compensation expense recognized, together with the income tax benefits recognized, is as follows (in thousands): Three Months Ended Six Months Ended December 31, December 31, 2018 2017 2018 2017 Stock-based compensation related to RSUs included in indirect costs and selling expense $ 6,349 $ 6,038 $ 12,047 $ 12,389 Income tax benefit recognized for stock-based compensation expense $ 1,657 $ 1,985 $ 2,373 $ 4,074 Under the terms of the 2016 Amended and Restated Incentive Compensation Plan (the 2016 Plan), the Company may issue, among others, non-qualified stock options, restricted stock, restricted stock units (RSUs), stock settled appreciation rights (SSARs), and performance awards, collectively referred to herein as equity instruments. The 2016 Plan was approved by the Company’s stockholders in November 2016 and amended and restated the 2006 Stock Incentive Plan (the 2006 Plan) which was due to expire at the end of the ten-year period. Previous grants that were made under the 2006 Plan, and equity instruments granted prior to approval of the 2016 Plan continue to be governed by the terms of the 2006 Plan. During the periods presented all equity instrument grants were made in the form of RSUs. Other than performance-based RSUs (PRSUs) which contain a market-based element, the fair value of RSU grants was determined based on the closing price of a share of the Company’s common stock on the date of grant. The fair value of RSUs with market-based vesting features was also measured on the grant date, but was done so using a binomial lattice model. Annual grants under the 2016 Plan, and previously the 2006 Plan, are generally made to the Company’s key employees during the first quarter of the Company’s fiscal year and to members of the Company’s Board of Directors during the second quarter of the Company’s fiscal year. With the approval of its Chief Executive Officer, the Company also issues equity instruments to strategic new hires and to employees who have demonstrated superior performance. The Company granted performance-based stock awards to key employees in October of 2018 and September of 2017 and 2016. The final number of PRSUs that are earned by participants and vest is based on the achievement of a specified EPS for the fiscal year and on the average share price for the 90-day period ended for the following three years. If the 90-day average share price of the Company’s stock in years one, two and three exceeds the 90-day average share price at the grant date by 100 percent or more the number of shares ultimately awarded could range up to 200 percent of the specified target award. In addition to the performance and market conditions, there is a service vesting condition that stipulates 50 percent of the award will vest approximately three years from the grant date and 50 percent will vest approximately four years from the grant date, depending on the award date. The annual performance-based awards granted for each of the fiscal years presented were as follows: Performance-based stock awards granted Number of additional shares earned under performance-based stock awards Fiscal year 2019 101,976 — Fiscal year 2018 185,056 20,116 Fiscal year 2017 193,420 73,065 As of December 31, 2018, the total number of shares authorized by shareholders for grants under the 2016 Plan and its predecessor plan is 1,200,000 plus any forfeitures from the 2006 Plan. The aggregate number of grants that may be made may exceed this approved amount as forfeited RSUs become available for future grants. As of December 31, 2018, cumulative grants of 560,169 equity instruments underlying the shares authorized have been awarded, and 130,004 of these instruments have been forfeited. Activity related to RSUs during the six months ended December 31, 2018 is as follows: RSUs Unvested at June 30, 2018 663,987 Granted 241,542 Vested (251,857 ) Forfeited (24,637 ) Unvested at December 31, 2018 629,035 Weighted-average grant date fair value for RSUs $ 205.74 As of December 31, 2018, there was $50.6 million of total unrecognized compensation costs related to RSUs scheduled to be recognized over a weighted-average period of 2.9 years.

Earnings Per Share

Earnings Per Share	6 Months Ended
Earnings Per Share	Dec. 31, 2018
Earnings Per Share [Abstract]
Earnings Per Share	1 3 . Earnings Per Share ASC 260, Earnings Per Share, requires dual presentation of basic and diluted earnings per share on the face of the income statement. Basic earnings per share excludes dilution and is computed by dividing income by the weighted-average number of common shares outstanding for the period. Diluted earnings per share reflects potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock but not securities that are anti-dilutive. Using the treasury stock method, diluted earnings per share include the incremental effect of RSUs that are no longer subject to a market or performance condition. The chart below shows the calculation of basic and diluted earnings per share (in thousands, except per share amounts): Three Months Ended Six Months Ended December 31, December 31, 2018 2017 2018 2017 Net income $ 68,596 $ 142,795 $ 147,429 $ 184,841 Weighted-average number of basic shares outstanding during the period 24,856 24,622 24,796 24,555 Dilutive effect of RSUs after application of treasury stock method 482 589 585 673 Weighted-average number of diluted shares outstanding during the period 25,338 25,211 25,381 25,228 Basic earnings per share $ 2.76 $ 5.80 $ 5.95 $ 7.53 Diluted earnings per share $ 2.71 $ 5.66 $ 5.81 $ 7.33

Income Taxes

Income Taxes	6 Months Ended
Income Taxes	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	1 4 . Income Taxes The Company is subject to income taxes in the U.S. and various state and foreign jurisdictions. Tax statutes and regulations within each jurisdiction are subject to interpretation and require the application of significant judgment. The Company is currently under examination by one state jurisdiction for the years 2015 through 2017 and one foreign jurisdiction for the years 2011 through 2015. The Company does not expect resolution of these examinations to have a material impact on its results of operations, financial condition or cash flows. The Company’s total liability for unrecognized tax benefits as of December 31, 2018 and June 30, 2018 was $4.4 million and $4.1 million, respectively. The $4.4 million unrecognized tax benefit at December 31, 2018, if recognized, would impact the Company’s effective tax rate. For the three months ended December 31, 2018, the effective income tax rate was 26.1 percent compared with (84.7) percent for the same period last year. For the three months ended December 31, 2017, the (84.7) percent effective tax rate included the favorable remeasurement of the Company’s deferred tax liability pursuant to the Tax Cuts and Jobs Act of 2017 (TCJA). For both comparative reporting periods, the Company’s effective tax rate was impacted by excess tax benefits under ASU 2016-09, Stock Compensation For the six months ended December 31, 2018, the effective income tax rate was 19.7 percent compared with (38.6) percent for the same period last year. For the six months ended December 31, 2017, the (38.6) percent effective tax rate included the favorable remeasurement of the Company’s deferred tax liability pursuant to the TCJA. For both comparative reporting periods, the Company’s effective tax rate was impacted by excess tax benefits under ASU 2016-09 and the change in value of assets invested in COLI policies. If gains or losses on the COLI investments throughout the rest of the current fiscal year vary from our estimates, our FY2019 effective tax rate will fluctuate in future quarters for the year ending June 30, 2019. Tax Cuts and Jobs Act The TCJA was enacted on December 22, 2017. Among other things, the TCJA reduced the U.S. federal corporate tax rate from 35.0 percent to 21.0 percent effective January 1, 2018. Prior to the expiration of the one-year measurement period of Staff Accounting Bulletin No. 118 on December 22, 2018, the Company finalized its tax reform positions related to: (1) transition tax liability; (2) remeasurement of deferred taxes; and (3) the limitation on the deductibility of certain executive compensation. In prior periods, the Company was able to make reasonable estimates and record provisional amounts for each of these elements. During the six months ended December 31, 2018, the Company recognized a $2.2 million tax benefit related to the reduction of our provisional calculation of the one-time transition tax liability and a $0.5 million tax benefit related to its final analysis of its deferred tax remeasurement. No other adjustments were made to FY2018 provisional amounts during the six months ended December 31, 2018.

Business Segment Information

Business Segment Information	6 Months Ended
Business Segment Information	Dec. 31, 2018
Segment Reporting [Abstract]
Business Segment Information	1 5 . Business Segment Information The Company reports operating results and financial data in two segments: domestic operations and international operations. Domestic operations provide information solutions and services to its customers. Its customers are primarily U.S. federal government agencies. Other customers of the Company’s domestic operations include commercial enterprises. The Company places employees in locations around the world in support of its customers. International operations offer services to both commercial and non-U.S. government customers primarily within the Company’s business systems and enterprise IT markets. The Company evaluates the performance of its operating segments based on net income. Summarized financial information concerning the Company’s reportable segments is as follows (in thousands): Domestic Operations International Operations Total Three Months Ended December 31, 2018 Revenue from external customers $ 1,142,552 $ 39,089 $ 1,181,641 Net income 64,557 4,039 68,596 Three Months Ended December 31, 2017 Revenue from external customers $ 1,046,823 $ 41,037 $ 1,087,860 Net income 138,930 3,865 142,795 Six Months Ended December 31, 2018 Revenue from external customers $ 2,269,075 $ 78,430 $ 2,347,505 Net income 140,006 7,423 147,429 Six Months Ended December 31, 2017 Revenue from external customers $ 2,097,706 $ 75,968 $ 2,173,674 Net income 177,763 7,078 184,841

Fair Value of Financial Instrum

Fair Value of Financial Instruments	6 Months Ended
Fair Value of Financial Instruments	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	1 6 . Fair Value of Financial Instruments ASC 820, Fair Value Measurements and Disclosures The Company’s financial assets and liabilities recorded at fair value on a recurring basis are categorized based on the priority of the inputs used to measure fair value. The inputs used in measuring fair value are categorized into three levels, as follows: • Level 1 Inputs – unadjusted quoted prices in active markets for identical assets or liabilities. • Level 2 Inputs – unadjusted quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets and liabilities in markets that are not active, inputs other than quoted prices that are observable, and inputs derived from or corroborated by observable market data. • Level 3 Inputs – amounts derived from valuation models in which unobservable inputs reflect the reporting entity’s own assumptions about the assumptions of market participants that would be used in pricing the asset or liability. The Company’s financial instruments measured at fair value included interest rate swap agreements and contingent consideration in connection with business combinations. The following table summarizes the financial assets and liabilities measured at fair value on a recurring basis as of December 31, 2018 and June 30, 2018, and the level they fall within the fair value hierarchy (in thousands): December 31, June 30, Financial Statement Fair Value 2018 2018 Description of Financial Instrument Classification Hierarchy Fair Value Contingent consideration Other accrued expenses and current liabilities Level 3 $ — $ 693 Contingent consideration Other long-term liabilities Level 3 $ 10,200 $ 11,000 Interest rate swap agreements Prepaid expenses and other current assets Level 2 $ 5 $ 672 Interest rate swap agreements Other long-term assets Level 2 $ 9,240 $ 13,405 Changes in the fair value of the interest rate swap agreements are recorded as a component of accumulated other comprehensive income or loss. Various acquisitions completed during prior fiscal years contained provisions requiring that the Company pay contingent consideration in the event the acquired businesses achieved certain specified earnings results during the two and three year periods subsequent to each acquisition. The Company determined the fair value of the contingent consideration as of each acquisition date using a valuation model which included the evaluation of the most likely outcome and the application of an appropriate discount rate. At the end of each reporting period, the fair value of the contingent consideration was remeasured and any changes were recorded in indirect costs and selling expenses. During the six months ended December 31, 2018 this remeasurement resulted in a $0.8 million change to the liability recorded.

Subsequent Events

Subsequent Events	6 Months Ended
Subsequent Events	Dec. 31, 2018
Subsequent Events [Abstract]
Subsequent Events	1 7 . Subsequent Events On January 25, 2019, CACI entered into an agreement to acquire LGS Innovations (LGS) for a purchase price of $750.0 million in cash, subject to adjustments for working capital and certain other items. LGS is a leading provider of signals intelligence (SIGINT) and cyber products and solutions to the Intelligence Community and Department of Defense. The Company anticipates that it will complete the acquisition during the third quarter of FY2019. On January 29, 2019, CACI completed the acquisition of Mastodon Design LLC (Mastodon) for a purchase price of $225.0 million in cash, subject to adjustments for working capital and certain other items. Mastodon specializes in the rapid design of rugged tactical communications SIGINT and electronic warfare (EW) equipment. These acquisitions will allow CACI to leverage their integrated technology and capabilities to create scalable SIGINT, EW, and cyber products and solutions providing advanced operational capabilities to our warfighters to address emerging near-peer threats.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	6 Months Ended
Summary of Significant Accounting Policies (Policies)	Dec. 31, 2018
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited consolidated financial statements of CACI International Inc and subsidiaries (CACI or the Company) have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (SEC) and include the assets, liabilities, results of operations, comprehensive income and cash flows for the Company, including its subsidiaries and ventures that are majority-owned or otherwise controlled by the Company. Certain information and note disclosures normally included in the annual financial statements prepared in accordance with U.S. generally accepted accounting principles (GAAP) have been condensed or omitted pursuant to those rules and regulations, although the Company believes that the disclosures made are adequate to make the information presented not misleading. All intercompany balances and transactions have been eliminated in consolidation. The carrying amounts of cash and cash equivalents, accounts receivable, accounts payable and amounts included in other current assets and current liabilities that meet the definition of a financial instrument approximate fair value because of the short-term nature of these amounts. The fair value of the Company’s debt outstanding as of December 31, 2018 under its bank credit facility approximates its carrying value. The fair value of the Company’s debt under its bank credit facility was estimated using Level 2 inputs based on market data of companies with a corporate rating similar to CACI’s that have recently priced credit facilities. See Notes 10 and 16. In the opinion of management, the accompanying unaudited consolidated financial statements reflect all adjustments and reclassifications (all of which are of a normal, recurring nature) that are necessary for the fair presentation of the periods presented. It is suggested that these unaudited consolidated financial statements be read in conjunction with the audited consolidated financial statements and the notes thereto included in the Company’s latest annual report to the SEC on Form 10-K for the year ended June 30, 2018. The results of operations for the three and six months ended December 31, 2018 are not necessarily indicative of the results to be expected for any subsequent interim period or for the full fiscal year. Certain reclassifications have been made to the prior period’s financial statements to conform to the current presentation.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In August 2018, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2018-15, Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract In March 2017, the FASB issued ASU 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost In August 2016, the FASB issued ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments In February 2016, the FASB issued ASU 2016-02, Leases In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers Effective July 1, 2018, we adopted ASC 606 using the modified retrospective method, whereby the cumulative effect of applying the standard was recognized through shareholders’ equity on the date of adoption. In addition, for our fiscal year ending June 30, 2019 and the interim reporting periods therein, the Company is required to disclose the amount by which each financial statement line item was affected by the new standard. The Company’s comparative information, for prior periods presented before July 1, 2018, has not been restated and continues to be reported under ASC 605. The impact of adoption on our consolidated balance sheet is as follows (in thousands): June 30, 2018 As Reported Under ASC 605 Adjustments Due to ASC 606 July 1, 2018 Balance Under ASC 606 Assets: Accounts receivable, net $ 806,871 $ 20,454 $ 827,325 Prepaid expenses and other current assets 58,126 2,342 60,468 Other long-term assets 39,175 3,923 43,098 Liabilities and Shareholders' Equity: Other accrued expenses and current liabilities 150,602 2,212 152,814 Deferred income taxes 200,880 6,639 207,519 Other long-term liabilities 85,187 98 85,285 Retained earnings 2,126,790 17,770 2,144,560 ASC 606 changed the pattern of revenue recognition for some of our contracts with customers. For our award and incentive fee contracts, we now recognize a constrained amount of variable consideration throughout the performance period rather than defer recognition of the relevant portion of fee until customer notification of the amount earned. Some of our fixed price services-type contracts in which revenue was previously recognized on a straight-line basis over the performance period converted to recognition of revenue using a cost-to-cost input method to measure our progress towards the complete satisfaction of the performance obligation. The cumulative effect of these changes in the pattern of revenue recognition resulted in an increase to accounts receivable, net with an offset to retained earnings. In addition, ASC 606 changed the timing of revenue recognition for license renewal performance obligations. Under prior GAAP, license renewals were generally recognized in the period the renewal contract was executed. However, upon adoption of ASC 606, the consideration received for a license renewal may not be recognized until the start of the term of the renewal. The cumulative effect of this change resulted in an increase to contract liabilities with an offset to retained earnings. The adoption of ASC 606 did not have a material impact on the Company’s revenue recognition for cost-plus-fee, fixed price/level-of-effort, time-and-materials (T&M), fixed price contracts previously recognized under ASC 605-35, and fixed price product revenue arrangements. Under ASC 340-40, the Company capitalizes certain costs to fulfill and obtain a contract. The cumulative effect of this change resulted in an increase to contract assets with an offset to retained earnings. These capitalized costs are amortized over the period of contract performance as revenue is recognized from the transfer of goods or services and the underlying performance obligation is satisfied. The table below presents the impact of adoption of ASC 606 on our consolidated statement of operations for the three and six months ended December 31, 2018 (in thousands): Three Months Ended Six Months Ended December 31, 2018 December 31, 2018 As Adjusted Under ASC 605 Effect of ASC 606 As Reported Under ASC 606 As Adjusted Under ASC 605 Effect of ASC 606 As Reported Under ASC 606 Revenue $ 1,177,635 $ 4,006 $ 1,181,641 $ 2,336,337 $ 11,168 $ 2,347,505 Costs of revenue: Direct costs 790,849 — 790,849 1,573,609 — 1,573,609 Indirect costs and selling expenses 270,997 (1,320 ) 269,677 535,697 (1,263 ) 534,434 Depreciation and amortization 18,852 — 18,852 37,599 — 37,599 Total costs of revenue 1,080,698 (1,320 ) 1,079,378 2,146,905 (1,263 ) 2,145,642 Income from operations 96,937 5,326 102,263 189,432 12,431 201,863 Interest expense and other, net 9,421 — 9,421 18,307 — 18,307 Income before taxes 87,516 5,326 92,842 171,125 12,431 183,556 Income tax expense 22,858 1,388 24,246 32,945 3,182 36,127 Net income $ 64,658 $ 3,938 $ 68,596 $ 138,180 $ 9,249 $ 147,429 Basic earnings per share $ 2.60 $ 0.16 $ 2.76 $ 5.57 $ 0.37 $ 5.95 Diluted earnings per share $ 2.55 $ 0.16 $ 2.71 $ 5.44 $ 0.36 $ 5.81 For the three and six months ended December 31, 2018, the effect of ASC 606 was primarily related to the timing of award and incentive fee revenue recognition. The table below presents the impact of adoption of ASC 606 on our consolidated balance sheet as of December 31, 2018 (in thousands): As Adjusted Under ASC 605 Effect of ASC 606 As Reported Under ASC 606 Assets: Accounts receivable, net $ 987,494 $ 29,474 $ 1,016,968 Prepaid expenses and other current assets 67,077 2,640 69,717 Other long-term assets 34,109 4,888 38,997 Liabilities and Shareholders' Equity: Other accrued expenses and current liabilities 156,538 3,823 160,361 Deferred income taxes 209,291 6,160 215,451 Other long-term liabilities 84,526 — 84,526 Retained earnings 2,264,970 27,019 2,291,989
Revenue Recognition	Revenue Recognition The Company generates almost all of our revenue from three different types of contractual arrangements with the U.S. government: cost-plus-fee, time-and-materials (T&M), and fixed-price contracts. Our contracts with the U.S. government are generally subject to the Federal Acquisition Regulation (FAR) and are competitively priced based on estimated costs of providing the contractual goods or services. We account for a contract when the parties have approved the contract and are committed to perform on it, the rights of each party and the payment terms are identified, the contract has commercial substance, and it is probable that we will collect substantially all of the consideration. At contract inception, the Company determines whether the goods or services to be provided are to be accounted for as a single performance obligation or as multiple performance obligations. This evaluation requires significant professional judgment as it may impact the timing and pattern of revenue recognition. If multiple performance obligations are identified, we generally use the cost plus a margin approach to determine the relative standalone selling price of each performance obligation. When determining the total transaction price, the Company identifies both fixed and variable consideration elements within the contract. Variable consideration includes any amount within the transaction price that is not fixed, such as: award or incentive fees; performance penalties; unfunded contract value; or other similar items. For our contracts with award or incentive fees, the Company estimates the total amount of award or incentive fee expected to be recognized into revenue. Throughout the performance period, we recognize as revenue a constrained amount of variable consideration only to the extent that it is probable that a significant reversal of the cumulative amount recognized to date will not be required in a subsequent period. Our estimate of variable consideration is periodically adjusted based on significant changes in relevant facts and circumstances. In the period in which we can calculate the final amount of award or incentive fee earned - based on the receipt of the customer’s final performance score or determining that more objective, contractually-defined criteria have been fully satisfied - the Company will adjust our cumulative revenue recognized to date on the contract. This adjustment to revenue will be disclosed as the amount of revenue recognized in the current period for a previously satisfied performance obligation. We generally recognize revenue over time throughout the performance period as the customer simultaneously receives and consumes the benefits provided on our services-type revenue arrangements. This continuous transfer of control for our U.S. government contracts is supported by the unilateral right of our customer to terminate the contract for a variety of reasons without having to provide justification for its decision. For our services-type revenue arrangements in which there are a repetitive amount of services that are substantially the same from one month to the next, the Company applies the series guidance. We use a variety of input and output methods that approximate the progress towards complete satisfaction of the performance obligation, including: costs incurred, labor hours expended, and time-elapsed measures for our fixed-price stand ready obligations. For certain contracts, primarily our cost-plus and T&M services-type revenue arrangements, we apply the right-to-invoice practical expedient in which revenue is recognized in direct proportion to our present right to consideration for progress towards the complete satisfaction of the performance obligation. When a performance obligation has a significant degree of interrelation or interdependence between one month’s deliverables and the next, when there is an award or incentive fee, or when there is a significant degree of customization or modification, the Company generally records revenue using a percentage of completion methodology. For these revenue arrangements, substantially all revenue is recognized over time using a cost-to-cost input method based on the ratio of costs incurred to date to total estimated costs at completion. When estimates of total costs to be incurred on a contract exceed total revenue, a provision for the entire loss on the contract is recorded in the period in which the loss is determined. Contract modifications are reviewed to determine whether they should be accounted for as part of the original performance obligation or as a separate contract. When a contract modification changes the scope or price and the additional performance obligations are at their standalone selling price, the original contract is terminated and the Company accounts for the change prospectively when the new goods or services to be transferred are distinct from those already provided. When the contract modification includes goods or services that are not distinct from those already provided, the Company records a cumulative adjustment to revenue based on a remeasurement of progress towards the complete satisfaction of the not yet fully delivered performance obligation. Based on the critical nature of our contractual performance obligations, the Company may proceed with work based on customer direction prior to the completion and signing of formal contract documents. The Company has a formal review process for approving any such work that considers previous experiences with the customer, communications with the customer regarding funding status, and our knowledge of available funding for the contract or program.
Contract Assets	Contract Assets Contract assets include unbilled receivables in which our right to consideration is conditional on factors other than the passage of time. Contract assets exclude billed and billable receivables. In addition, the costs to fulfill a contract are considered for capitalization based on contract specific facts and circumstances. The incremental costs to fulfill a contract (e.g. ramp up costs at the beginning of the period of performance) may be capitalized when expenses are incurred prior to satisfying a performance obligation. The incremental costs of obtaining a contract (e.g. sales commissions) are capitalized as an asset when the Company expects to recover them either directly or indirectly through the revenue arrangement’s profit margins. These capitalized costs are subsequently expensed over the revenue arrangement’s period of performance. The Company has elected to apply the practical expedient to immediately expense the costs to obtain a contract when the performance obligation will be completed within twelve months of contract inception. Contract assets are periodically reassessed based on reasonably available information as of the balance sheet date to ensure they do not exceed their net realizable value.
Contract Liabilities	Contract Liabilities Contract liabilities include advance payments received from the customer in excess of revenue that may be recognized as of the balance sheet date. The advance payment is then subsequently recognized into revenue as the performance obligation is satisfied.
Remaining Performance Obligations	Remaining Performance Obligations The Company’s remaining performance obligations balance represents the expected revenue to be recognized for the satisfaction of remaining performance obligations on our existing contracts as of period end. The remaining performance obligations balance excludes unexercised contract option years and task orders that may be issued underneath an Indefinite Delivery/Indefinite Quantity (IDIQ) vehicle. The remaining performance obligations balance generally increases with the execution of new contracts and converts into revenue as our contractual performance obligations are satisfied. The Company continues to monitor our remaining performance obligations balance as it is subject to change from execution of new contracts, contract modifications or extensions, government deobligations, or early terminations. Based on this analysis, an adjustment to the period end balance may be required.

Recent Accounting Pronounceme_2

Recent Accounting Pronouncements (Tables)	6 Months Ended
Recent Accounting Pronouncements (Tables)	Dec. 31, 2018
ASU 2014-09
Summary of Impact of Adoption of ASC 606 on Financial Statements	The impact of adoption on our consolidated balance sheet is as follows (in thousands): June 30, 2018 As Reported Under ASC 605 Adjustments Due to ASC 606 July 1, 2018 Balance Under ASC 606 Assets: Accounts receivable, net $ 806,871 $ 20,454 $ 827,325 Prepaid expenses and other current assets 58,126 2,342 60,468 Other long-term assets 39,175 3,923 43,098 Liabilities and Shareholders' Equity: Other accrued expenses and current liabilities 150,602 2,212 152,814 Deferred income taxes 200,880 6,639 207,519 Other long-term liabilities 85,187 98 85,285 Retained earnings 2,126,790 17,770 2,144,560 The table below presents the impact of adoption of ASC 606 on our consolidated statement of operations for the three and six months ended December 31, 2018 (in thousands): Three Months Ended Six Months Ended December 31, 2018 December 31, 2018 As Adjusted Under ASC 605 Effect of ASC 606 As Reported Under ASC 606 As Adjusted Under ASC 605 Effect of ASC 606 As Reported Under ASC 606 Revenue $ 1,177,635 $ 4,006 $ 1,181,641 $ 2,336,337 $ 11,168 $ 2,347,505 Costs of revenue: Direct costs 790,849 — 790,849 1,573,609 — 1,573,609 Indirect costs and selling expenses 270,997 (1,320 ) 269,677 535,697 (1,263 ) 534,434 Depreciation and amortization 18,852 — 18,852 37,599 — 37,599 Total costs of revenue 1,080,698 (1,320 ) 1,079,378 2,146,905 (1,263 ) 2,145,642 Income from operations 96,937 5,326 102,263 189,432 12,431 201,863 Interest expense and other, net 9,421 — 9,421 18,307 — 18,307 Income before taxes 87,516 5,326 92,842 171,125 12,431 183,556 Income tax expense 22,858 1,388 24,246 32,945 3,182 36,127 Net income $ 64,658 $ 3,938 $ 68,596 $ 138,180 $ 9,249 $ 147,429 Basic earnings per share $ 2.60 $ 0.16 $ 2.76 $ 5.57 $ 0.37 $ 5.95 Diluted earnings per share $ 2.55 $ 0.16 $ 2.71 $ 5.44 $ 0.36 $ 5.81 For the three and six months ended December 31, 2018, the effect of ASC 606 was primarily related to the timing of award and incentive fee revenue recognition. The table below presents the impact of adoption of ASC 606 on our consolidated balance sheet as of December 31, 2018 (in thousands): As Adjusted Under ASC 605 Effect of ASC 606 As Reported Under ASC 606 Assets: Accounts receivable, net $ 987,494 $ 29,474 $ 1,016,968 Prepaid expenses and other current assets 67,077 2,640 69,717 Other long-term assets 34,109 4,888 38,997 Liabilities and Shareholders' Equity: Other accrued expenses and current liabilities 156,538 3,823 160,361 Deferred income taxes 209,291 6,160 215,451 Other long-term liabilities 84,526 — 84,526 Retained earnings 2,264,970 27,019 2,291,989

Intangible Assets (Tables)

Intangible Assets (Tables)	6 Months Ended
Intangible Assets (Tables)	Dec. 31, 2018
Finite Lived Intangible Assets Net [Abstract]
Schedule of Intangible Assets	Intangible assets consisted of the following (in thousands): December 31, June 30, 2018 (1) 2018 Intangible assets: Customer contracts and related customer relationships $ 444,221 $ 435,933 Acquired technologies 13,165 13,237 Other 800 804 Intangible assets 458,186 449,974 Less accumulated amortization: Customer contracts and related customer relationships (217,673 ) (199,018 ) Acquired technologies (9,484 ) (8,761 ) Other (473 ) (440 ) Less accumulated amortization (227,630 ) (208,219 ) Total intangible assets, net $ 230,556 $ 241,755 __________________ (1) During the six months ended December 31, 2018, the Company removed $0.2 million in fully amortized intangible assets.
Expected Amortization Expense	Expected amortization expense for the remainder of the fiscal year ending June 30, 2019, and for each of the fiscal years thereafter, is as follows (in thousands): Fiscal year ending June 30, Amount 2019 (six months) $ 17,165 2020 32,440 2021 28,767 2022 25,000 2023 22,336 Thereafter 104,848 Total intangible assets, net $ 230,556

Goodwill (Tables)

Goodwill (Tables)	6 Months Ended
Goodwill (Tables)	Dec. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Roll Forward of Goodwill	The changes in the carrying amount of goodwill for the year ended June 30, 2018 and the six months ended December 31, 2018 are as follows (in thousands): Domestic International Total Balance at June 30, 2017 $ 2,479,496 $ 97,939 $ 2,577,435 Goodwill acquired (1) 35,024 6,867 41,891 Foreign currency translation — 1,509 1,509 Balance at June 30, 2018 2,514,520 106,315 2,620,835 Goodwill acquired (1) 42,704 (99 ) 42,605 Foreign currency translation — (3,691 ) (3,691 ) Balance at December 31, 2018 $ 2,557,224 $ 102,525 $ 2,659,749 (1) Includes goodwill initially allocated to new business combinations as well as measurement period adjustments.

Revenue Recognition (Tables)

Revenue Recognition (Tables)	6 Months Ended
Revenue Recognition (Tables)	Dec. 31, 2018
Revenue From Contract With Customer [Abstract]
Disaggregation of Revenue by Contract Type, Customer Information and Prime or Subcontractor	Revenue by Contract Type The Company generated revenue on our cost-plus-fee, firm fixed-price (including proprietary software product sales), and time-and-materials contracts as follows during the three and six months ended December 31, 2018 (in thousands): Three Months Ended Six Months Ended December 31, 2018 December 31, 2018 Domestic International Total Domestic International Total Cost-plus-fee $ 657,050 $ — $ 657,050 $ 1,298,577 $ — $ 1,298,577 Firm fixed-price 313,018 24,356 337,374 634,089 47,289 681,378 Time and materials 172,484 14,733 187,217 336,409 31,141 367,550 Total $ 1,142,552 $ 39,089 $ 1,181,641 $ 2,269,075 $ 78,430 $ 2,347,505 Customer Information The Company generated revenue from our primary customer groups as follows during the three and six months ended December 31, 2018 (in thousands): Three Months Ended Six Months Ended December 31, 2018 December 31, 2018 Domestic International Total Domestic International Total Department of Defense $ 834,797 $ — $ 834,797 $ 1,653,063 $ — $ 1,653,063 Federal civilian agencies 287,915 — 287,915 580,117 — 580,117 Commercial and other 19,840 39,089 58,929 35,895 78,430 114,325 Total $ 1,142,552 $ 39,089 $ 1,181,641 $ 2,269,075 $ 78,430 $ 2,347,505 Prime or Subcontractor The Company generated revenue as either the prime or subcontractor as follows during the three and six months ended December 31, 2018 (in thousands): Three Months Ended Six Months Ended December 31, 2018 December 31, 2018 Domestic International Total Domestic International Total Prime contractor $ 1,052,867 $ 39,089 $ 1,091,956 $ 2,103,398 $ 78,430 $ 2,181,828 Subcontractor 89,685 — 89,685 165,677 — 165,677 Total $ 1,142,552 $ 39,089 $ 1,181,641 $ 2,269,075 $ 78,430 $ 2,347,505

Contract Balances (Tables)

Contract Balances (Tables)	6 Months Ended
Contract Balances (Tables)	Dec. 31, 2018
Revenue From Contract With Customer [Abstract]
Contract Assets and Liabilities	Net contract assets (liabilities) consisted of the following (in thousands): December 31, July 1, Description of Contract Related Balance Financial Statement Classification 2018 2018 (1) Contract assets – current: Unbilled receivables Accounts receivable, net $ 77,464 $ 72,511 Costs to obtain – short-term Prepaid expenses and other current assets 2,640 2,342 Contract assets – noncurrent: Unbilled receivables Accounts receivable, long-term 8,741 8,620 Costs to obtain – long-term Other long-term assets 4,888 3,923 Contract liabilities – current: Deferred revenue Other accrued expenses and current liabilities (49,844 ) (43,940 ) Contract liabilities – noncurrent: Deferred revenue Other long-term liabilities (5,294 ) (4,740 ) Net contract assets (liabilities) $ 38,595 $ 38,716 (1) Includes the cumulative effect to the Company’s opening balance sheet from the adoption of ASU 2014-09, Revenue from Contracts with Customers

Long-term Debt (Tables)

Long-term Debt (Tables)	6 Months Ended
Long-term Debt (Tables)	Dec. 31, 2018
Long Term Debt [Abstract]
Schedule of Long-term Debt	Long-term debt consisted of the following (in thousands): December 31, June 30, 2018 2018 Bank credit facility – term loans $ 914,934 $ 938,394 Bank credit facility – revolver loans 150,000 135,000 Principal amount of long-term debt 1,064,934 1,073,394 Less unamortized discounts and debt issuance costs (9,898 ) (11,054 ) Total long-term debt 1,055,036 1,062,340 Less current portion (46,920 ) (46,920 ) Long-term debt, net of current portion $ 1,008,116 $ 1,015,420
Cash Flow Hedges	The effect of derivative instruments in the consolidated statements of operations and accumulated other comprehensive loss for the three and six months ended December 31, 2018 and 2017 is as follows (in thousands): Three Months Ended Six Months Ended December 31, December 31, 2018 2017 2018 2017 Gain (loss) recognized in other comprehensive income $ (2,598 ) $ 1,867 $ (1,573 ) $ 1,521 Amounts reclassified to earnings from accumulated other comprehensive loss (1,180 ) 746 (1,988 ) 1,600 Net current period other comprehensive income $ (3,778 ) $ 2,613 $ (3,561 ) $ 3,121
Aggregate Maturities of Long-term Debt	The aggregate maturities of long-term debt at December 31, 2018 are as follows (in thousands): Twelve months ending December 31, 2019 $ 46,920 2020 46,920 2021 70,380 2022 93,839 2023 806,875 Principal amount of long-term debt 1,064,934 Less unamortized discounts and debt issuance costs (9,898 ) Total long-term debt $ 1,055,036

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	6 Months Ended
Stock-Based Compensation (Tables)	Dec. 31, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Compensation Expense and Related Tax Benefits Recognized	Stock-based compensation expense recognized, together with the income tax benefits recognized, is as follows (in thousands): Three Months Ended Six Months Ended December 31, December 31, 2018 2017 2018 2017 Stock-based compensation related to RSUs included in indirect costs and selling expense $ 6,349 $ 6,038 $ 12,047 $ 12,389 Income tax benefit recognized for stock-based compensation expense $ 1,657 $ 1,985 $ 2,373 $ 4,074
Annual Performance-Based Awards Granted	The annual performance-based awards granted for each of the fiscal years presented were as follows: Performance-based stock awards granted Number of additional shares earned under performance-based stock awards Fiscal year 2019 101,976 — Fiscal year 2018 185,056 20,116 Fiscal year 2017 193,420 73,065
Summary of Activity Related to RSUs	Activity related to RSUs during the six months ended December 31, 2018 is as follows: RSUs Unvested at June 30, 2018 663,987 Granted 241,542 Vested (251,857 ) Forfeited (24,637 ) Unvested at December 31, 2018 629,035 Weighted-average grant date fair value for RSUs $ 205.74

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
Earnings Per Share (Tables)	Dec. 31, 2018
Earnings Per Share [Abstract]
Calculation of Basic and Diluted Earnings per Share	The chart below shows the calculation of basic and diluted earnings per share (in thousands, except per share amounts): Three Months Ended Six Months Ended December 31, December 31, 2018 2017 2018 2017 Net income $ 68,596 $ 142,795 $ 147,429 $ 184,841 Weighted-average number of basic shares outstanding during the period 24,856 24,622 24,796 24,555 Dilutive effect of RSUs after application of treasury stock method 482 589 585 673 Weighted-average number of diluted shares outstanding during the period 25,338 25,211 25,381 25,228 Basic earnings per share $ 2.76 $ 5.80 $ 5.95 $ 7.53 Diluted earnings per share $ 2.71 $ 5.66 $ 5.81 $ 7.33

Business Segment Information (T

Business Segment Information (Tables)	6 Months Ended
Business Segment Information (Tables)	Dec. 31, 2018
Segment Reporting [Abstract]
Summarized Financial Information of Reportable Segments	Summarized financial information concerning the Company’s reportable segments is as follows (in thousands): Domestic Operations International Operations Total Three Months Ended December 31, 2018 Revenue from external customers $ 1,142,552 $ 39,089 $ 1,181,641 Net income 64,557 4,039 68,596 Three Months Ended December 31, 2017 Revenue from external customers $ 1,046,823 $ 41,037 $ 1,087,860 Net income 138,930 3,865 142,795 Six Months Ended December 31, 2018 Revenue from external customers $ 2,269,075 $ 78,430 $ 2,347,505 Net income 140,006 7,423 147,429 Six Months Ended December 31, 2017 Revenue from external customers $ 2,097,706 $ 75,968 $ 2,173,674 Net income 177,763 7,078 184,841

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	6 Months Ended
Fair Value of Financial Instruments (Tables)	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Recurring Fair Value Measurements	The following table summarizes the financial assets and liabilities measured at fair value on a recurring basis as of December 31, 2018 and June 30, 2018, and the level they fall within the fair value hierarchy (in thousands): December 31, June 30, Financial Statement Fair Value 2018 2018 Description of Financial Instrument Classification Hierarchy Fair Value Contingent consideration Other accrued expenses and current liabilities Level 3 $ — $ 693 Contingent consideration Other long-term liabilities Level 3 $ 10,200 $ 11,000 Interest rate swap agreements Prepaid expenses and other current assets Level 2 $ 5 $ 672 Interest rate swap agreements Other long-term assets Level 2 $ 9,240 $ 13,405

Recent Accounting Pronounceme_3

Recent Accounting Pronouncements (Detail Textual) - USD ($) $ in Millions	6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Payments For Proceeds From Life Insurance Policies [Abstract]
Proceeds from settlement of corporate owned life insurance (COLI)	$ 1.9	$ 3.7

Recent Accounting Pronounceme_4

Recent Accounting Pronouncements - Impact of Adoption of ASC 606 on Financial Statements - Consolidated Balance Sheet (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Jul. 01, 2018	Jun. 30, 2018
ASSETS
Accounts receivable, net	$ 1,016,968	$ 827,325	$ 806,871
Prepaid expenses and other current assets	69,717	60,468	58,126
Other long-term assets	38,997	43,098	39,175
LIABILITIES AND SHAREHOLDERS’ EQUITY
Accounts payable	197,225		82,017
Other accrued expenses and current liabilities	160,361	152,814	150,602
Deferred income taxes	215,451	207,519	200,880
Other long-term liabilities	84,526	85,285	85,187
Retained earnings	2,291,989	2,144,560	2,126,790
Under ASC 605
ASSETS
Accounts receivable, net	987,494		806,871
Prepaid expenses and other current assets	67,077		58,126
Other long-term assets	34,109		39,175
LIABILITIES AND SHAREHOLDERS’ EQUITY
Other accrued expenses and current liabilities	156,538		150,602
Deferred income taxes	209,291		200,880
Other long-term liabilities	84,526		85,187
Retained earnings	2,264,970		$ 2,126,790
ASU 2014-09 \| Adjustments Due to ASC 606
ASSETS
Accounts receivable, net	29,474	20,454
Prepaid expenses and other current assets	2,640	2,342
Other long-term assets	4,888	3,923
LIABILITIES AND SHAREHOLDERS’ EQUITY
Other accrued expenses and current liabilities	3,823	2,212
Deferred income taxes	6,160	6,639
Other long-term liabilities		98
Retained earnings	$ 27,019	$ 17,770

Recent Accounting Pronounceme_5

Recent Accounting Pronouncements - Impact of Adoption of ASC 606 on Financial Statements - Consolidated Statement of Operations (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	$ 1,181,641	$ 1,087,860	$ 2,347,505	$ 2,173,674
Costs of revenue:
Direct costs	790,849	727,160	1,573,609	1,466,838
Indirect costs and selling expenses	269,677	254,180	534,434	515,424
Depreciation and amortization	18,852	18,258	37,599	35,846
Total costs of revenue	1,079,378	999,598	2,145,642	2,018,108
Income from operations	102,263	88,262	201,863	155,566
Interest expense and other, net	9,421	10,956	18,307	22,203
Income before taxes	92,842	77,306	183,556	133,363
Income tax expense (benefit)	24,246	(65,489)	36,127	(51,478)
Net income	$ 68,596	$ 142,795	$ 147,429	$ 184,841
Basic earnings per share	$ 2.76	$ 5.80	$ 5.95	$ 7.53
Diluted earnings per share	$ 2.71	$ 5.66	$ 5.81	$ 7.33
Under ASC 605
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	$ 1,177,635		$ 2,336,337
Costs of revenue:
Direct costs	790,849		1,573,609
Indirect costs and selling expenses	270,997		535,697
Depreciation and amortization	18,852		37,599
Total costs of revenue	1,080,698		2,146,905
Income from operations	96,937		189,432
Interest expense and other, net	9,421		18,307
Income before taxes	87,516		171,125
Income tax expense (benefit)	22,858		32,945
Net income	$ 64,658		$ 138,180
Basic earnings per share	$ 2.60		$ 5.57
Diluted earnings per share	$ 2.55		$ 5.44
ASU 2014-09 \| Effect of ASC 606
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	$ 4,006		$ 11,168
Costs of revenue:
Indirect costs and selling expenses	(1,320)		(1,263)
Total costs of revenue	(1,320)		(1,263)
Income from operations	5,326		12,431
Income before taxes	5,326		12,431
Income tax expense (benefit)	1,388		3,182
Net income	$ 3,938		$ 9,249
Basic earnings per share	$ 0.16		$ 0.37
Diluted earnings per share	$ 0.16		$ 0.36

Acquisitions (Detail Textual)

Acquisitions (Detail Textual) - USD ($) $ in Thousands	Aug. 15, 2018	Dec. 31, 2018	Jun. 30, 2018	Jun. 30, 2017
Business Acquisition [Line Items]
Goodwill		$ 2,659,749	$ 2,620,835	$ 2,577,435
Domestic Acquisition \| SE&A BU
Business Acquisition [Line Items]
Acquisition date	Aug. 15, 2018
Cash consideration	$ 84,000
Consideration, initial net working capital payment	6,000
Goodwill	42,600
Identifiable intangible assets	$ 8,900

Intangible Assets - Summary of

Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	[1]	Jun. 30, 2018
Finite Lived Intangible Assets [Line Items]
Intangible assets	$ 458,186		$ 449,974
Less accumulated amortization	(227,630)		(208,219)
Total intangible assets, net	230,556		241,755
Customer contracts and related customer relationships
Finite Lived Intangible Assets [Line Items]
Intangible assets	444,221		435,933
Less accumulated amortization	(217,673)		(199,018)
Acquired technologies
Finite Lived Intangible Assets [Line Items]
Intangible assets	13,165		13,237
Less accumulated amortization	(9,484)		(8,761)
Other
Finite Lived Intangible Assets [Line Items]
Intangible assets	800		804
Less accumulated amortization	$ (473)		$ (440)

[1]	During the six months ended December 31, 2018, the Company removed $0.2 million in fully amortized intangible assets.

Intangible Assets - Summary o_2

Intangible Assets - Summary of Intangible Assets (Parenthetical) (Detail) $ in Millions	6 Months Ended
	Dec. 31, 2018USD ($)
Finite Lived Intangible Assets Net [Abstract]
Removal of fully amortized intangible assets	$ 0.2

Intangible Assets (Detail Textu

Intangible Assets (Detail Textual)	6 Months Ended
Intangible Assets (Detail Textual)	Dec. 31, 2018
Minimum
Finite Lived Intangible Assets [Line Items]
Intangible asset amortization period	1 year
Maximum
Finite Lived Intangible Assets [Line Items]
Intangible asset amortization period	20 years
Customer contracts and related customer relationships
Finite Lived Intangible Assets [Line Items]
Weighted-average amortization period	15 years
Weighted-average remaining amortization period	11 years 6 months
Acquired technologies
Finite Lived Intangible Assets [Line Items]
Weighted-average amortization period	7 years
Weighted-average remaining amortization period	5 years 4 months 24 days

Intangible Assets - Expected Am

Intangible Assets - Expected Amortization Expense (Detail) - USD ($) $ in Thousands	Dec. 31, 2018		Jun. 30, 2018
Finite Lived Intangible Assets Net [Abstract]
2019 (six months)	$ 17,165
2,020	32,440
2,021	28,767
2,022	25,000
2,023	22,336
Thereafter	104,848
Total intangible assets, net	$ 230,556	[1]	$ 241,755

[1]	During the six months ended December 31, 2018, the Company removed $0.2 million in fully amortized intangible assets.

Goodwill - Roll Forward of Good

Goodwill - Roll Forward of Goodwill (Detail) - USD ($) $ in Thousands		6 Months Ended	12 Months Ended
		Dec. 31, 2018	Jun. 30, 2018
Goodwill [Roll Forward]
Balance		$ 2,620,835	$ 2,577,435
Goodwill acquired	[1]	42,605	41,891
Foreign currency translation		(3,691)	1,509
Balance		2,659,749	2,620,835
Domestic
Goodwill [Roll Forward]
Balance		2,514,520	2,479,496
Goodwill acquired	[1]	42,704	35,024
Balance		2,557,224	2,514,520
International
Goodwill [Roll Forward]
Balance		106,315	97,939
Goodwill acquired	[1]	(99)	6,867
Foreign currency translation		(3,691)	1,509
Balance		$ 102,525	$ 106,315

[1]	Includes goodwill initially allocated to new business combinations as well as measurement period adjustments.

Revenue Recognition - Disaggreg

Revenue Recognition - Disaggregation of Revenue by Contract Type, Customer Information and Prime or Subcontractor (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Disaggregation Of Revenue [Line Items]
Revenue	$ 1,181,641	$ 1,087,860	$ 2,347,505	$ 2,173,674
Prime contractor
Disaggregation Of Revenue [Line Items]
Revenue	1,091,956		2,181,828
Subcontractor
Disaggregation Of Revenue [Line Items]
Revenue	89,685		165,677
Department of Defense
Disaggregation Of Revenue [Line Items]
Revenue	834,797		1,653,063
Federal civilian agencies
Disaggregation Of Revenue [Line Items]
Revenue	287,915		580,117
Commercial and other
Disaggregation Of Revenue [Line Items]
Revenue	58,929		114,325
Domestic
Disaggregation Of Revenue [Line Items]
Revenue	1,142,552	1,046,823	2,269,075	2,097,706
Domestic \| Prime contractor
Disaggregation Of Revenue [Line Items]
Revenue	1,052,867		2,103,398
Domestic \| Subcontractor
Disaggregation Of Revenue [Line Items]
Revenue	89,685		165,677
Domestic \| Department of Defense
Disaggregation Of Revenue [Line Items]
Revenue	834,797		1,653,063
Domestic \| Federal civilian agencies
Disaggregation Of Revenue [Line Items]
Revenue	287,915		580,117
Domestic \| Commercial and other
Disaggregation Of Revenue [Line Items]
Revenue	19,840		35,895
International
Disaggregation Of Revenue [Line Items]
Revenue	39,089	$ 41,037	78,430	$ 75,968
International \| Prime contractor
Disaggregation Of Revenue [Line Items]
Revenue	39,089		78,430
International \| Commercial and other
Disaggregation Of Revenue [Line Items]
Revenue	39,089		78,430
Cost-plus-fee
Disaggregation Of Revenue [Line Items]
Revenue	657,050		1,298,577
Cost-plus-fee \| Domestic
Disaggregation Of Revenue [Line Items]
Revenue	657,050		1,298,577
Firm fixed-price
Disaggregation Of Revenue [Line Items]
Revenue	337,374		681,378
Firm fixed-price \| Domestic
Disaggregation Of Revenue [Line Items]
Revenue	313,018		634,089
Firm fixed-price \| International
Disaggregation Of Revenue [Line Items]
Revenue	24,356		47,289
Time and materials
Disaggregation Of Revenue [Line Items]
Revenue	187,217		367,550
Time and materials \| Domestic
Disaggregation Of Revenue [Line Items]
Revenue	172,484		336,409
Time and materials \| International
Disaggregation Of Revenue [Line Items]
Revenue	$ 14,733		$ 31,141

Revenue Recognition (Detail Tex

Revenue Recognition (Detail Textual) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Change In Accounting Estimate [Line Items]
Income before income taxes	$ 92,842	$ 77,306	$ 183,556	$ 133,363
Diluted earnings per share	$ 2.71	$ 5.66	$ 5.81	$ 7.33
EAC Adjustments
Change In Accounting Estimate [Line Items]
Income before income taxes	$ 4,200		$ 10,600
Diluted earnings per share	$ 0.12		$ 0.31

Revenue - Remaining Performance

Revenue - Remaining Performance Obligations (Detail) $ in Billions	Dec. 31, 2018USD ($)
Revenue From Contract With Customer [Abstract]
Remaining performance obligations	$ 5.3

Revenue - Remaining Performan_2

Revenue - Remaining Performance Obligations (Detail 1)	Dec. 31, 2018
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2019-01-01
Remaining Performance Obligations [Line Items]
Remaining performance obligations, expected satisfaction, percentage	86.00%
Remaining performance obligations, expected timing of satisfaction	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-01-01
Remaining Performance Obligations [Line Items]
Remaining performance obligations, expected satisfaction, percentage	14.00%
Remaining performance obligations, expected timing of satisfaction

Contract Balances - Contract As

Contract Balances - Contract Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Jul. 01, 2018	[1]	Jun. 30, 2018
Contract assets – current:
Unbilled receivables	$ 77,464	$ 72,511
Costs to obtain – short-term	2,640	2,342
Contract assets – noncurrent:
Unbilled receivables	8,741	8,620		$ 8,620
Costs to obtain – long-term	4,888	3,923
Contract liabilities – current:
Deferred revenue	(49,844)	(43,940)
Contract liabilities – noncurrent:
Deferred revenue	(5,294)	(4,740)
Net contract assets (liabilities)	$ 38,595	$ 38,716

[1]	Includes the cumulative effect to the Company’s opening balance sheet from the adoption of ASU 2014-09, Revenue from Contracts with Customers, using the modified retrospective method.

Contract Balances (Detail Textu

Contract Balances (Detail Textual) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Contract Balances (Detail Textual) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2018
Revenue From Contract With Customer [Abstract]
Liability, revenue recognized	$ 5.5	$ 22.6

Sales of Receivables (Detail Te

Sales of Receivables (Detail Textual) - USD ($)	Dec. 28, 2018	Dec. 31, 2018
MARPA Facility
MARPA Facility term	1 year
MARPA Facility maximum commitment		$ 200,000,000
Sales of receivables		0
Gain (loss) on sale of receivables		$ 0

Long-term Debt - Schedule of Lo

Long-term Debt - Schedule of Long-term Debt (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Jun. 30, 2018
Debt Instrument [Line Items]
Principal amount of long-term debt	$ 1,064,934	$ 1,073,394
Less unamortized discounts and debt issuance costs	(9,898)	(11,054)
Total long-term debt	1,055,036	1,062,340
Less current portion	(46,920)	(46,920)
Long-term debt, net of current portion	1,008,116	1,015,420
Bank credit facility - term loans
Debt Instrument [Line Items]
Principal amount of long-term debt	914,934	938,394
Bank credit facility - revolver loans
Debt Instrument [Line Items]
Principal amount of long-term debt	$ 150,000	$ 135,000

Long-term Debt (Detail Textual)

Long-term Debt (Detail Textual) - USD ($)	Jan. 17, 2019	Dec. 31, 2018	Jun. 30, 2018
Debt Instrument [Line Items]
Outstanding amount under Credit Facility		$ 1,064,934,000	$ 1,073,394,000
Interest Rate Swap \| Cash Flow Hedging
Debt Instrument [Line Items]
Aggregate notional amount		700,000,000
Bank Credit Facility
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity		$ 2,038,400,000
Credit facility borrowing capacity, description		At any time and so long as no default has occurred, the Company has the right to increase the Revolving Facility or the Term Loan in an aggregate principal amount of up to the greater of $400.0 million or an amount subject to 2.75 times senior secured leverage, calculated assuming the Revolving Facility is fully drawn, with applicable lender approvals.
Credit Facility optional increases to borrowing capacity		$ 400,000,000
Ratio that restricts optional increases to borrowing capacity		275.00%
Outstanding borrowings interest rate		3.27%
Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity		$ 1,100,000,000
Outstanding amount under Credit Facility		150,000,000	135,000,000
Revolving Credit Facility \| Subsequent Event
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity	$ 1,500,000,000
Credit facility, increase in borrowing capacity	$ 400,000,000
Term loans
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity		938,400,000
Outstanding amount under Credit Facility		$ 914,934,000	$ 938,394,000
Term loan period		5 years
Loan maturity date		Jun. 30, 2023
Term loan frequency of payment		quarterly
Term loans \| Principal Payment Through June 30, 2021
Debt Instrument [Line Items]
Term loan principal payment		$ 11,700,000
Term loans \| Principal Payment Thereafter June 30, 2021
Debt Instrument [Line Items]
Term loan principal payment		23,500,000
Same-Day Swing Line Loan Revolving Credit Subfacility
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity		100,000,000
Outstanding amount under Credit Facility		0
Stand-By Letters Of Credit Revolving Credit Subfacility
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity		$ 25,000,000

Long-term Debt - Cash Flow Hedg

Long-term Debt - Cash Flow Hedges (Detail 2) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Long Term Debt [Abstract]
Gain (loss) recognized in other comprehensive income	$ (2,598)	$ 1,867	$ (1,573)	$ 1,521
Amounts reclassified to earnings from accumulated other comprehensive loss	(1,180)	746	(1,988)	1,600
Net current period other comprehensive income	$ (3,778)	$ 2,613	$ (3,561)	$ 3,121

Long-term Debt - Aggregate Matu

Long-term Debt - Aggregate Maturities of Long-Term Debt (Detail 3) - USD ($) $ in Thousands	Dec. 31, 2018	Jun. 30, 2018
Long Term Debt [Abstract]
2,019	$ 46,920
2,020	46,920
2,021	70,380
2,022	93,839
2,023	806,875
Principal amount of long-term debt	1,064,934	$ 1,073,394
Less unamortized discounts and debt issuance costs	(9,898)	(11,054)
Total long-term debt	$ 1,055,036	$ 1,062,340

Stock-Based Compensation - Expe

Stock-Based Compensation - Expense and Related Tax Benefits Recognized (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Stock-based compensation included in indirect costs and selling expense:
Stock-based compensation related to RSUs included in indirect costs and selling expense	$ 6,349	$ 6,038	$ 12,047	$ 12,389
Income tax benefit recognized for stock-based compensation expense	$ 1,657	$ 1,985	$ 2,373	$ 4,074

Stock-Based Compensation (Detai

Stock-Based Compensation (Detail Textual) $ in Millions	6 Months Ended
Stock-Based Compensation (Detail Textual) $ in Millions	Dec. 31, 2018USD ($)shares
PRSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period to establish average share price for performance measurement	90 days
Average share price performance condition, percentage	100.00%
Maximum earned award, percentage of target award	200.00%
Percentage of earned award vesting after three years	50.00%
Percentage of earned award vesting after four years	50.00%
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost \| $	$ 50.6
Weighted-average period to recognize unrecognized compensation cost (in years)	2 years 10 months 24 days
2006 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock incentive plan, expiration period	10 years
2016 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for grants	1,200,000
Cumulative equity instruments awarded	560,169
Cumulative equity instruments forfeited	130,004

Stock-Based Compensation - Annu

Stock-Based Compensation - Annual Performance-Based Awards Granted (Detail)	6 Months Ended
	Dec. 31, 2018shares
FY2019 PRSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
PRSUs granted	101,976
FY2018 PRSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
PRSUs granted	185,056
Additional PRSUs earned pursuant to condition	20,116
FY2017 PRSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
PRSUs granted	193,420
Additional PRSUs earned pursuant to condition	73,065

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Activity Related to RSUs (Detail 1) - RSUs	6 Months Ended
	Dec. 31, 2018$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested at June 30, 2018	663,987
Granted	241,542
Vested	(251,857)
Forfeited	(24,637)
Unvested at December 31, 2018	629,035
Weighted-average grant date fair value for RSUs \| $ / shares	$ 205.74

Earnings Per Share - Calculatio

Earnings Per Share - Calculation of Basic and Diluted Earnings per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Earnings Per Share [Abstract]
Net income	$ 68,596	$ 142,795	$ 147,429	$ 184,841
Weighted-average number of basic shares outstanding during the period	24,856	24,622	24,796	24,555
Dilutive effect of RSUs after application of treasury stock method	482	589	585	673
Weighted-average number of diluted shares outstanding during the period	25,338	25,211	25,381	25,228
Basic earnings per share	$ 2.76	$ 5.80	$ 5.95	$ 7.53
Diluted earnings per share	$ 2.71	$ 5.66	$ 5.81	$ 7.33

Income Taxes (Detail Textual)

Income Taxes (Detail Textual) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
Income Taxes (Detail Textual) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Liability for unrecognized tax benefits	$ 4.4		$ 4.4		$ 4.1
Unrecognized tax benefit that would impact the company's effective tax rate	$ 4.4		$ 4.4
Effective tax rate, percentage	26.10%	(84.70%)	19.70%	(38.60%)
Statutory U.S. Income Tax Rate			21.00%	35.00%
TCJA one-time transition tax, measurement period adjustment to income tax expense			$ 2.2
TCJA reameasurement of deferred taxes, measurement period adjustment to income tax expense	$ 0.5		$ 0.5

Business Segment Information (D

Business Segment Information (Detail Textual)	6 Months Ended
Business Segment Information (Detail Textual)	Dec. 31, 2018Segment
Segment Reporting [Abstract]
Number of reportable segments	2

Business Segment Information -

Business Segment Information - Summarized Financial Information of Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Revenue from external customers	$ 1,181,641	$ 1,087,860	$ 2,347,505	$ 2,173,674
Net income	68,596	142,795	147,429	184,841
Domestic Operations
Segment Reporting Information [Line Items]
Revenue from external customers	1,142,552	1,046,823	2,269,075	2,097,706
Net income	64,557	138,930	140,006	177,763
International Operations
Segment Reporting Information [Line Items]
Revenue from external customers	39,089	41,037	78,430	75,968
Net income	$ 4,039	$ 3,865	$ 7,423	$ 7,078

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Recurring Fair Value Measurements (Detail) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Dec. 31, 2018	Jun. 30, 2018
Other accrued expenses and current liabilities \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration		$ 693
Other long-term liabilities \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	$ 10,200	11,000
Prepaid expenses and other current assets \| Level 2 \| Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap agreements	5	672
Other long-term assets \| Level 2 \| Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap agreements	$ 9,240	$ 13,405

Fair Value of Financial Instr_4

Fair Value of Financial Instruments (Detail Textual) $ in Millions	6 Months Ended
	Dec. 31, 2018USD ($)
Fair Value Disclosures [Abstract]
Business combination contingent consideration period	two and three year periods
Change in fair value of contingent consideration	$ (0.8)

Subsequent Events (Detail Textu

Subsequent Events (Detail Textual) - Subsequent Event - USD ($) $ in Millions	Jan. 29, 2019	Jan. 25, 2019
LGS
Subsequent Event [Line Items]
Purchase consideration		$ 750
Mastodon
Subsequent Event [Line Items]
Purchase consideration	$ 225