Urs (URS) 10-Q 12 Nov 13 2013 Q3 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	9 Months Ended
	Sep. 27, 2013	Oct. 28, 2013
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	27-Sep-13	'
Entity Registrant Name	'URS CORP /NEW/	'
Entity Central Index Key	'0000102379	'
Current Fiscal Year End Date	'--01-03	'
Entity Well-known Seasoned Issuer	'Yes	'
Entity Voluntary Filers	'No	'
Entity Current Reporting Status	'Yes	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	74,884,351
Document Fiscal Year Focus	'2013	'
Document Fiscal Period Focus	'Q3	'

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Sep. 27, 2013		Dec. 28, 2012
Current assets:	'		'
Cash and cash equivalents	$314,200,000		$314,500,000
Accounts receivable, including retentions of $130.2 and $114.4, respectively	1,464,800,000		1,554,800,000
Costs and accrued earnings in excess of billings on contracts	1,459,700,000		1,384,300,000
Less receivable allowances	-63,100,000		-69,700,000
Net accounts receivable	2,861,400,000		2,869,400,000
Deferred tax assets	46,500,000		67,600,000
Inventory	53,700,000		61,500,000
Other current assets	227,200,000		204,200,000
Total current assets	3,503,000,000		3,517,200,000
Investments in and advances to unconsolidated joint ventures	252,800,000		278,300,000
Property and equipment, net	631,100,000	[1]	687,500,000	[1]
Intangible assets, net	604,100,000		692,200,000
Goodwill	3,703,300,000		3,721,600,000
Other long-term assets	396,000,000		364,200,000
Total assets	9,090,300,000		9,261,000,000	[2]
Current liabilities:	'		'
Current portion of long-term debt	92,200,000		71,800,000
Accounts payable and subcontractors payable, including retentions of $34.9 and $32.3, respectively	697,500,000		803,500,000
Accrued salaries and employee benefits	556,100,000		558,800,000
Billings in excess of costs and accrued earnings on contracts	225,100,000		289,100,000
Other current liabilities	257,300,000		277,800,000
Total current liabilities	1,828,200,000		2,001,000,000
Long-term debt	1,903,000,000		1,992,500,000
Deferred tax liabilities	399,300,000		379,900,000
Self-insurance reserves	132,000,000		129,800,000
Pension and post-retirement benefit obligations	278,500,000		300,900,000
Other long-term liabilities	277,400,000		271,000,000
Total liabilities	4,818,400,000		5,075,100,000
Commitments and contingencies	'		'
URS stockholders' equity:	'		'
Preferred stock, authorized 3.0 shares; no shares outstanding	0		0
Common stock par value $.01; authorized 200.0 shares; 88.9 and 88.9 shares issued, respectively; and 74.8 and 76.8 shares outstanding, respectively	900,000		900,000
Treasury stock, 14.1 and 12.1 shares at cost, respectively	-588,200,000		-494,900,000
Additional paid-in capital	3,038,000,000		3,003,900,000
Accumulated other comprehensive loss	-154,600,000		-113,200,000
Retained earnings	1,827,400,000		1,647,300,000
Total URS stockholders' equity	4,123,500,000		4,044,000,000
Noncontrolling interests	148,400,000		141,900,000
Total stockholders' equity	4,271,900,000		4,185,900,000
Total liabilities and stockholders' equity	$9,090,300,000		$9,261,000,000
[1]	The unamortized computer software costs were $78.4 million and $71.1 million, respectively, as of September 27, 2013 and December 28, 2012.
[2]	Total assets by segments for the year ended December 28, 2012 were restated to correct an error related to prior year goodwill impairment charges. See Note 1, “Business, Basis of Presentation, and Accounting Policies.”

PARENTHETICAL_DATA_TO_THE_CONS

PARENTHETICAL DATA TO THE CONSOLIDATED BALANCE SHEETS (USD $)	Sep. 27, 2013	Dec. 28, 2012
In Millions, except Share data, unless otherwise specified
Current assets:	'	'
Accounts receivable retentions	$130.20	$114.40
Current liabilities:	'	'
Accounts payable and subcontractors payable retentions	$34.90	$32.30
URS stockholders' equity:	'	'
Preferred stock, authorized shares	3,000,000	3,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value	$0.01	$0.01
Common stock, authorized shares	200,000,000	200,000,000
Common stock shares issued	88,900,000	88,900,000
Common stock shares outstanding	74,800,000	76,800,000
Treasury stock shares at cost	14,100,000	12,100,000

CONSOLIDATED_STATEMENTS_OF_OPE

CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	3 Months Ended				9 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 27, 2013		Sep. 28, 2012		Sep. 27, 2013		Sep. 28, 2012
Income Statement [Abstract]	'		'		'		'
Revenues	$2,735.50		$2,947.60		$8,330		$7,999.80
Cost of revenues	-2,559		-2,753.30		-7,851.90		-7,484
General and administrative expenses	-14.3		-22.6		-59.9		-62
Acquisition-related expenses	'		0.8		'		-16.1
Equity in income (loss) of unconsolidated joint ventures	17.1		31.1		59.1		76.8
Operating income (loss)	179.3		203.6		477.3		514.5
Interest expense	-23.2		-20.5		-65.8		-51
Other income (expenses)	1.6		10.8		-4.2		4.1
Income (loss) before income taxes	157.7		193.9		407.3		467.6
Income tax benefit (expense)	-42.3		-66.1		-123.4		-155.2
Net income (loss) including noncontrolling interests	115.4		127.8		283.9		312.4
Noncontrolling interests in income of consolidated subsidiaries	-26.6		-21.1		-55.9		-72.4
Net income (loss) attributable to URS	$88.80		$106.70		$228		$240
Earnings (loss) per share:	'		'		'		'
Basic	$1.21		$1.43		$3.08		$3.23
Diluted	$1.20		$1.43		$3.07		$3.22
Weighted-average shares of common stock outstanding:	'		'		'		'
Basic	73.6	[1]	74.5	[1]	73.9	[1]	74.2	[1]
Diluted	73.9		74.6		74.3		74.5
Cash dividends declared per share	$0.21		$0.20		$0.63		$0.60
[1]	Weighted-average shares of common stock outstanding is net of treasury stock.

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 27, 2013	Sep. 28, 2012	Sep. 27, 2013	Sep. 28, 2012
Comprehensive income (loss):	'	'	'	'
Net income (loss) including noncontrolling interests	$115.40	$127.80	$283.90	$312.40
Pension and post-retirement related adjustments, net of tax	1.2	1.1	7.3	3.2
Foreign currency translation adjustments, net of tax	26.7	59.2	-48.8	46.6
Loss on derivative instruments, net of tax	'	'	'	-0.7
Reclassification adjustment of prior derivative settlement, net of tax	0.1	'	0.1	'
Comprehensive income (loss)	143.4	188.1	242.5	361.5
Noncontrolling interests in comprehensive income of consolidated subsidiaries	-26.6	-21.1	-55.9	-72.4
Comprehensive income (loss) attributable to URS	$116.80	$167	$186.60	$289.10

CONSOLIDATED_STATEMENTS_OF_CHA

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (USD $)	Total	Common Stock Activities [Member]	Treasury Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Total URS Stockholders' Equity	Noncontrolling Interests
In Millions
Beginning Balances at Dec. 30, 2011	$3,907.30	$0.90	($454.90)	$2,966.80	($110.80)	$1,398.10	$3,800.10	$107.20
Beginning Balances (in shares) at Dec. 30, 2011	'	76.7	'	'	'	'	'	'
Employee stock purchases and exercises of stock options	7.7	'	'	7.7	'	'	7.7	'
Employee stock purchases and exercises of stock options (in shares)	'	0.3	'	'	'	'	'	'
Stock repurchased in connection with exercises of stock options and vesting of restricted stock awards	-15.4	'	'	-15.4	'	'	-15.4	'
Stock repurchased in connection with exercises of stock options and vesting of restricted stock awards (in shares)	'	-0.4	'	'	'	'	'	'
Stock-based compensation	32.5	'	'	32.5	'	'	32.5	'
Stock-based compensation (in shares)	'	1.2	'	'	'	'	'	'
Foreign currency translation adjustments, net of tax	46.6	'	'	'	46.6	'	46.6	'
Pension and post-retirement related adjustments, net of tax	3.2	'	'	'	3.2	'	3.2	'
Loss on derivative instruments, net of tax	-0.7	'	'	'	-0.7	'	-0.7	'
Repurchases of common stock	-40	'	-40	'	'	'	-40	'
Repurchases of common stock (in shares)	'	-1	'	'	'	'	'	'
Cash dividends declared	-46	'	'	'	'	-46	-46	'
Noncontrolling interests from an acquisition	2	'	'	'	'	'	'	2
Distributions to noncontrolling interests	-51.9	'	'	'	'	'	'	-51.9
Contributions and advances from noncontrolling interests	0.7	'	'	'	'	'	'	0.7
Other transactions with noncontrolling interests	2.6	'	'	'	'	'	'	2.6
Net income (loss) including noncontrolling interests	312.4	'	'	'	'	240	240	72.4
Ending Balances at Sep. 28, 2012	4,161	0.9	-494.9	2,991.60	-61.7	1,592.10	4,028	133
Ending Balances (in shares) at Sep. 28, 2012	'	76.8	'	'	'	'	'	'
Beginning Balances at Dec. 28, 2012	4,185.90	0.9	-494.9	3,003.90	-113.2	1,647.30	4,044	141.9
Beginning Balances (in shares) at Dec. 28, 2012	76.8	76.8	'	'	'	'	'	'
Employee stock purchases and exercises of stock options	14.6	'	'	14.6	'	'	14.6	'
Employee stock purchases and exercises of stock options (in shares)	'	0.4	'	'	'	'	'	'
Stock repurchased in connection with exercises of stock options and vesting of restricted stock awards	-17.8	'	'	-17.8	'	'	-17.8	'
Stock repurchased in connection with exercises of stock options and vesting of restricted stock awards (in shares)	'	-0.4	'	'	'	'	'	'
Stock-based compensation	35.7	'	'	35.7	'	'	35.7	'
Excess tax benefits from stock-based compensation	1.6	'	'	1.6	'	'	1.6	'
Foreign currency translation adjustments, net of tax	-48.8	'	'	'	-48.8	'	-48.8	'
Pension and post-retirement related adjustments, net of tax	7.3	'	'	'	7.3	'	7.3	'
Reclassification adjustment of prior derivative settlement, net of tax	0.1	'	'	'	0.1	'	0.1	'
Repurchases of common stock	-93.3	'	-93.3	'	'	'	-93.3	'
Repurchases of common stock (in shares)	'	-2	'	'	'	'	'	'
Cash dividends declared	-47.9	'	'	'	'	-47.9	-47.9	'
Distributions to noncontrolling interests	-49.2	'	'	'	'	'	'	-49.2
Other transactions with noncontrolling interests	-0.2	'	'	'	'	'	'	-0.2
Net income (loss) including noncontrolling interests	283.9	'	'	'	'	228	228	55.9
Ending Balances at Sep. 27, 2013	$4,271.90	$0.90	($588.20)	$3,038	($154.60)	$1,827.40	$4,123.50	$148.40
Ending Balances (in shares) at Sep. 27, 2013	74.8	74.8	'	'	'	'	'	'

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 27, 2013	Sep. 28, 2012
Cash flows from operating activities:	'	'
Net income (loss) including noncontrolling interests	$283.90	$312.40
Adjustments to reconcile net income (loss) to net cash from operating activities:	'	'
Depreciation and amortization	115.7	91.7
Amortization of intangible assets	80.8	73.8
Amortization of debt issuance costs and discount/premium	0.4	2.3
Foreign currency (gains) losses related to foreign currency derivatives and intercompany loans	4.2	-4.1
Normal profit	-0.7	-4.6
Provision for doubtful accounts	1.6	0.9
Loss (gain) on disposal of property and equipment	-22.2	-3.1
Deferred income taxes	36	2.5
Stock-based compensation	35.7	32.5
Excess tax benefits from stock-based compensation	-1.6	'
Equity in income of unconsolidated joint ventures	-59.1	-76.8
Dividends received from unconsolidated joint ventures	74.7	67.9
Changes in operating assets, liabilities and other, net of effects of business acquisitions:	'	'
Accounts receivable and costs and accrued earnings in excess of billings on contracts	19	-129
Inventory	7.8	0.8
Other current assets	9.5	-10
Collections from (advances to) unconsolidated joint ventures	2.9	-0.7
Accounts payable, accrued salaries and employee benefits, and other current liabilities	-118.1	50.4
Billings in excess of costs and accrued earnings on contracts	-58.5	-38.6
Other long-term liabilities	12.5	-9.2
Other long-term assets	-66.2	-60
Total adjustments and changes	74.4	-13.3
Net cash from operating activities	358.3	299.1
Cash flows from investing activities:	'	'
Payments for business acquisitions, net of cash acquired	'	-1,345.70
Proceeds from disposal of property and equipment	32.6	17.2
Payments in settlement of foreign currency forward contract	'	-1,260.60
Receipts in settlement of foreign currency forward contract	'	1,260.30
Investments in unconsolidated joint ventures	-0.1	-5.4
Changes in restricted cash	4.6	3.8
Capital expenditures, less equipment purchased through capital leases and equipment notes	-68.2	-101.8
Net cash from investing activities	-31.1	-1,432.20
Cash flows from financing activities:	'	'
Borrowings from long-term debt	'	998.9
Payments on long-term debt	-3.6	-4.4
Borrowings from revolving line of credit	929.4	560
Payments on revolving line of credit	-987.2	-433.6
Net borrowings (payments) under foreign lines of credit and short-term notes	-21.1	-12.7
Net change in overdrafts	-55.1	4.1
Payments on capital lease obligations	-13.9	-10.1
Payments of debt issuance costs	'	-8.8
Excess tax benefits from stock-based compensation	1.6	'
Proceeds from employee stock purchases and exercises of stock options	14.6	7.7
Distributions to noncontrolling interests	-49.2	-51.9
Contributions and advances from noncontrolling interests	'	2.3
Dividends paid	-46.8	-29.8
Repurchases of common stock	-93.3	-40
Net cash from financing activities	-324.6	981.7
Net change in cash and cash equivalents	2.6	-151.4
Effect of foreign exchange rate changes on cash and cash equivalents	-2.9	4.6
Cash and cash equivalents at beginning of period	314.5	436
Cash and cash equivalents at end of period	314.2	289.2
Supplemental information:	'	'
Interest paid	46.7	26.8
Taxes paid	89.3	93.5
Supplemental schedule of non-cash investing and financing activities:	'	'
Equipment acquired with capital lease obligations and equipment note obligations	36	16.2
Cash dividends declared but not paid	$17.90	$16.20

BUSINESS_BASIS_OF_PRESENTATION

BUSINESS, BASIS OF PRESENTATION, AND ACCOUNTING POLICIES	9 Months Ended
	Sep. 27, 2013
Notes to Financial Statements [Abstract]	'
BUSINESS, BASIS OF PRESENTATION, AND ACCOUNTING POLICIES	'
	NOTE 1. BUSINESS, BASIS OF PRESENTATION, AND ACCOUNTING POLICIES
	Overview
	The terms “we,” “us,” and “our” used in these financial statements refer to URS Corporation and its consolidated subsidiaries unless otherwise indicated. We are a leading international provider of engineering, construction and technical services. We offer a broad range of program management, planning, design, engineering, construction and construction management, operations and maintenance, and decommissioning and closure services to public agencies and private sector clients around the world. We also are a United States (“U.S.”) federal government contractor in the areas of systems engineering and technical assistance, operations and maintenance, and information technology (“IT”) services. Headquartered in San Francisco, we have more than 50,000 employees in a global network of offices in nearly 50 countries. We operate through four reporting segments: the Infrastructure & Environment Division, the Federal Services Division, the Energy & Construction Division, and the Oil & Gas Division. Our Oil & Gas Division is composed of the former operations of Flint Energy Services Ltd. (“Flint”), which we acquired on May 14, 2012.
	The accompanying unaudited condensed consolidated financial statements and related notes have been prepared in accordance with generally accepted accounting principles (“GAAP”) in the U.S. for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements.
	You should read our unaudited condensed consolidated financial statements in conjunction with our Annual Report on Form 10-K for the fiscal year ended December 28, 2012, except that we have restated the consolidated financial statements for the effects of an error in 2011 as described below. The results of operations for the three and nine months ended September 27, 2013 are not indicative of the operating results for the full year or for future years.
	In our opinion, the accompanying unaudited condensed consolidated financial statements reflect all normal and recurring adjustments that are necessary for a fair statement of our financial position, results of operations and cash flows for the interim periods presented, except for the restatement described below.
	The preparation of our unaudited condensed consolidated financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities, and the disclosure of contingent assets and liabilities at the balance sheet dates as well as the reported amounts of revenues and costs during the reporting periods. Actual results could differ from those estimates. On an ongoing basis, we review our estimates based on information that is currently available. Changes in facts and circumstances may cause us to revise our estimates.
	Principles of Consolidation and Basis of Presentation
	Our condensed consolidated financial statements include the financial position, results of operations and cash flows of URS Corporation and our majority-owned subsidiaries and joint ventures that are required to be consolidated.
	The operating results of Flint prior to the acquisition date, May 14, 2012, are not included in our condensed consolidated financial statements. See Note 8, “Acquisition,” for more information regarding this acquisition.
	Investments in unconsolidated joint ventures are accounted for using the equity method and are included as “Investments in and advances to unconsolidated joint ventures” on our Condensed Consolidated Balance Sheets. All significant intercompany transactions and accounts have been eliminated in consolidation.
	Restatement of Previously Reported Consolidated Financial Statements
	We have restated our Consolidated Balance Sheets, Consolidated Statements of Changes in Stockholders' Equity, and the related notes as of and for the years ended December 28, 2012 and December 30, 2011 due to the incorrect application of the requirements of Financial Accounting Standards Board Accounting Standards Codification 350 “Intangibles – Goodwill and Other” (“ASC 350”) during our annual and interim goodwill impairment testing.  This error resulted in an overstatement of our goodwill impairment charge and the related income tax expense impact for the year ended December 30, 2011.  This error in our consolidated statement of operations for the year ended December 30, 2011 resulted in an overstatement of our goodwill impairment charge of $474.5 million, an understatement of income tax expense of $51.6 million, an overstatement of net loss including noncontrolling interests of $422.9 million and an overstatement of net loss attributable to URS of $422.9 million ($5.47 per share). In addition, this error impacted our Consolidated Balance Sheets as of December 28, 2012 and December 30, 2011 by an understatement in goodwill of $474.5 million, understatement of long-term deferred tax liabilities of $51.6 million and an understatement of retained earnings of $422.9 million. We expect to amend and resubmit our restated Form 10-K for the fiscal year ended December 28, 2012, our Form 10-Q for the three months ended March 29, 2013 and our Form 10-Q for the three and six months ended June 28, 2013.
	This error was related to treatment of noncontrolling interests within the fair value calculation of our reporting units. During the course of the interim goodwill impairment analysis performed during the period ended September 27, 2013, we determined that the methodology used previously to calculate the fair values of our reporting units did not comply with the applicable goodwill accounting guidance.  Goodwill impairment reviews involve a two-step process. See Note 9, “Goodwill,” for more disclosure about our test for goodwill impairment.  We calculated the fair values of our reporting units excluding the portion attributable to the noncontrolling interests of our subsidiaries that are not wholly-owned, which was not consistent with the required guidance in ASC 350. The revised fair value calculations resulted in an increase to the fair values of our reporting units that have noncontrolling interests.
	During the quarter ended September 30, 2011, a decline in our stock price and market capitalization triggered an interim impairment test, which resulted in five of our reporting units failing step one of the analysis as their carrying values exceeded our calculated fair values. This ultimately resulted in the recognition of an after-tax goodwill impairment charge of $732.2 million for the fiscal year ended December 30, 2011. Based on our subsequent calculations of the fair values using the appropriate guidance, we concluded that four of those reporting units' calculated fair values actually exceeded their carrying values, thereby passing step one of the goodwill impairment analysis.  Consequently, goodwill related to those reporting units was not impaired.
	This error resulted in the misstatement of our goodwill, deferred tax liabilities and retained earnings balances as follows:
			As Reported		Adjustment		As Restated
		(In millions)
		Consolidated Balance Sheet Data:
		Balance as of December 28, 2012
		Goodwill	$	3,247.10	$	474.5	$	3,721.60
		Total assets	$	8,786.50	$	474.5	$	9,261.00
		Deferred tax liabilities	$	328.3	$	51.6	$	379.9
		Total liabilities	$	5,023.50	$	51.6	$	5,075.10
		Retained earnings	$	1,224.40	$	422.9	$	1,647.30
		Total URS stockholders' equity	$	3,621.10	$	422.9	$	4,044.00
		Total stockholders' equity	$	3,763.00	$	422.9	$	4,185.90
		Total liabilities and stockholders' equity	$	8,786.50	$	474.5	$	9,261.00
		Consolidated Statement of Changes in Stockholders' Equity Data:
		Balance as of December 30, 2011
		Retained earnings	$	975.2	$	422.9	$	1,398.10
		Total URS stockholders' equity	$	3,377.20	$	422.9	$	3,800.10
		Total equity	$	3,484.40	$	422.9	$	3,907.30
		Balance as of September 28, 2012
		Retained earnings	$	1,169.20	$	422.9	$	1,592.10
		Total URS stockholders' equity	$	3,605.10	$	422.9	$	4,028.00
		Total equity	$	3,738.10	$	422.9	$	4,161.00
		Balance as of December 28, 2012
		Retained earnings	$	1,224.40	$	422.9	$	1,647.30
		Total URS stockholders' equity	$	3,621.10	$	422.9	$	4,044.00
		Total equity	$	3,763.00	$	422.9	$	4,185.90
	Reclassifications
	We made reclassifications to the prior year's financial statements to conform them to the current period's presentation. These reclassifications have no effect on our consolidated net cash flows or consolidated net income.
	Cash and Cash Equivalents
	Cash and cash equivalents include all highly liquid investments with maturities of 90 days or less at the date of purchase and include interest-bearing bank deposits and money market funds. At September 27, 2013 and December 28, 2012, our restricted cash balances were $12.5 million and $17.1 million, respectively. These amounts were included in “Other current assets” on our Condensed Consolidated Balance Sheets. For cash held by our consolidated joint ventures, see Note 6, “Joint Ventures.”
	Use of and Changes in Estimates
	Our business activities involve making significant estimates and assumptions in the normal course of business relating to our contracts. We focus on evaluating the performance of contracts individually.  These estimates and assumptions can vary in the normal course of business as contracts progress, when estimated productivity assumptions change based on experience to-date and as uncertainties are resolved. We use the cumulative catch-up method applicable to construction contract accounting to account for revisions in estimates. During the nine months ended September 27, 2013, our results of operations included the recognition of $27.8 million of performance-based incentive fees from our work managing chemical demilitarization programs due to good project performance that occurred during the period.  These changes in estimates resulted in increases of $27.8 million in operating income, $16.7 million in net income and $0.22 in diluted earnings per common share (“diluted EPS”) for the nine months ended September 27, 2013. There were no material changes in estimates for the three months ended September 27, 2013.
	During the nine months ended September 28, 2012, our results of operations included the recognition of a $40.0 million programmatic schedule incentive fee achieved when multiple chemical demilitarization contracts each met their milestones during the period. This change in estimate resulted in increases of $40.0 million in operating income, $24.0 million in net income, and $0.32 in diluted EPS for the nine months ended September 28, 2012.  There were no material changes in estimates for the three months ended September 28, 2012.

ADOPTED_AND_OTHER_RECENTLY_ISS

ADOPTED AND OTHER RECENTLY ISSUED STATEMENTS OF FINANCIAL ACCOUNTING STANDARDS	9 Months Ended
	Sep. 27, 2013
Notes to Financial Statements [Abstract]	'
ADOPTED AND OTHER RECENTLY ISSUED STATEMENTS OF FINANCIAL ACCOUNTING STANDARDS	'
	NOTE 2. ADOPTED AND OTHER RECENTLY ISSUED STATEMENTS OF FINANCIAL ACCOUNTING STANDARDS
	An amendment to the accounting standard related to the presentation of other comprehensive income was issued. It requires public entities to provide information about amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income and, in some cases, cross-references to related footnote disclosures. This portion of the standard was effective for us beginning with our first interim period in fiscal year 2013. See Note 17, “Reclassifications Out of Accumulated Other Comprehensive Income (Loss),” for more information. The adoption of this standard did not have a material impact on our condensed consolidated financial statements.
	An accounting standard update was issued related to new disclosures on offsetting assets and liabilities of financial and derivative instruments. The amendments require the disclosure of gross asset and liability amounts, amounts offset on the balance sheet and amounts subject to the offsetting requirements, but not offset on the balance sheet. This standard does not amend the existing guidance on when it is appropriate to offset. An amendment to this standard was subsequently issued to clarify the intended scope of the disclosures. It applies to derivatives, repurchase agreements, and securities lending transactions that are either offset in accordance with Topic 815, Derivatives and Hedging, or subject to an enforceable master netting arrangement or similar agreement. The amended standard update was effective for us beginning with our first interim period in fiscal year 2013. The adoption of this standard did not have a material impact on our condensed consolidated financial statements.
	An accounting standard update was issued related to obligations stemming from joint and several liability arrangements. It addresses the recognition, measurement and disclosure of obligations when multiple parties incur joint liabilities where the total amount of the obligation is fixed at the financial reporting date. The standard requires the recognition of the total amount of the liability that the parties are obligated to pay under an arrangement, along with any additional amount the company might expect to pay on behalf of other parties to the liability. This standard is effective for periods beginning with our first interim period in fiscal year 2014, with an option for early adoption. We have adopted this standard early, in connection with the filing of our Form 8-K on April 17, 2013, as amended. See Note 18, “Condensed Consolidating Financial Information.”
	An accounting standard was issued related to derivatives and hedging. Prior to this standard, the only interest rates that were permitted to be used as benchmark interest rates in a fair value or cash flow hedge were the interest rates on direct Treasury obligations of the U.S. government (UST) and the London Interbank Offered Rate (“LIBOR”) swap rate. The new standard allows the use of the Fed Funds rate (the interest rate at which depository institutions lend balances to each other overnight) as a benchmark rate. The standard also eliminates the need to designate the same benchmark interest rate for similar hedges. Additionally, it removes language indicating that the use of different benchmark interest rates for similar hedges “shall be rare and shall be justified.” The new standard was effective prospectively for qualifying new or redesignated hedging relationships entered into on or after July 17, 2013. The adoption of this standard did not have a material impact on our condensed consolidated financial statements.
	An accounting standard update was issued related to foreign currency matters. The standard update addresses the accounting for the release of cumulative translation adjustments when a parent either sells a part or all of its investment in a foreign entity or no longer holds a controlling financial interest in a business unit or a group of assets that do not produce a profit within a foreign entity. Under such circumstances, a parent company is required to release any related currency adjustments to earnings. The currency adjustment is released into earnings only if the sale or transfer results in a complete or substantially complete liquidation of the foreign entity in question. The standard update is effective for us for periods beginning with our first interim period in fiscal year 2014. We do not expect that the adoption of this standard will have a material impact on our condensed consolidated financial statements.
	An accounting standard was issued related to the preparation of financial statements when an entity is ceasing operations and selling assets to settle debts with creditors. Financial statements must be prepared using a liquidation basis of accounting to help users understand how much the organization will have available to distribute to investors after disposing of its assets and settling its obligations. The liquidation basis is used when liquidation is “imminent.” Liquidation is considered imminent when there is only a remote likelihood that the organization will return from liquidation, and one of the following conditions is true (a) a plan for liquidation is approved by the relevant organization officials, and the likelihood that the plan will be blocked by other parties is considered remote or (b) a plan for liquidation is being imposed by other forces. The standard is effective for us beginning with our first interim reporting period in fiscal year 2014. We do not expect that the adoption of the standard will have a material impact on our condensed consolidated financial statements.
	An accounting standard was issued related to the standardization of the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. Under these circumstances, the standard requires that the unrecognized tax benefit, or a portion thereof, be presented in the financial statements as a reduction to a deferred tax asset. However, if the taxpayer is unable to recognize a tax benefit at the reporting date because the carryforward is not available in the same jurisdiction or is insufficient to cover the full tax benefit, the net benefit would, instead, be presented as a liability. This standard is effective for us beginning with our first interim reporting period in fiscal year 2014. We do not expect that the adoption of this standard will have a material impact on our condensed consolidated financial statements.

EARNINGS_PER_SHARE

EARNINGS PER SHARE	9 Months Ended
	Sep. 27, 2013
Notes to Financial Statements [Abstract]	'
EARNINGS PER SHARE	'
	NOTE 3. EARNINGS PER SHARE
	In our computation of diluted earnings per share (“EPS”), we exclude the potential shares related to stock options that are issued and unexercised where the exercise price exceeds the average market price of our common stock during the period. We also exclude nonvested time-based and time-and-performance-based restricted stock awards and units that have an anti-dilutive effect on EPS and nonvested time-and-performance-based restricted stock awards and units with performance or performance and market conditions that have not been satisfied at the reporting date.
	The following table summarizes the components of weighted-average shares of common stock outstanding for both basic and diluted EPS:
				Three Months Ended			Nine Months Ended
				September 27,		September 28,	September 27,	September 28,
		(In millions)		2013		2012	2013	2012
		Weighted-average shares of common stock outstanding (1)		73.6		74.5	73.9	74.2
		Effect of dilutive stock options, restricted stock awards and units and employee stock purchase plan shares		0.3		0.1	0.4	0.3
		Weighted-average shares of common stock outstanding – Diluted		73.9		74.6	74.3	74.5
	Weighted-average shares of common stock outstanding is net of treasury stock.
			September 27,		September 28,
		(In millions)	2013		2012
		Anti-dilutive equity awards not included above	—	†	1.1
	†       Represents less than half a million shares.

ACCOUNTS_RECEIVABLE_AND_COSTS_

ACCOUNTS RECEIVABLE AND COSTS AND ACCRUED EARNINGS IN EXCESS OF BILLINGS ON CONTRACTS	9 Months Ended
	Sep. 27, 2013
Notes to Financial Statements [Abstract]	'
ACCOUNTS RECEIVABLE AND COSTS AND ACCRUED EARNINGS IN EXCESS OF BILLINGS ON CONTRACTS	'
	NOTE 4. ACCOUNTS RECEIVABLE AND COSTS AND ACCRUED EARNINGS IN EXCESS OF BILLINGS ON CONTRACTS
	Accounts receivable in the accompanying Condensed Consolidated Balance Sheets are primarily comprised of amounts billed to clients for services already provided, but which have not yet been collected. Occasionally, under the terms of specific contracts, we are permitted to submit invoices in advance of providing our services to our clients and to the extent they have not been collected, these amounts are also included in accounts receivable.
	Costs and accrued earnings in excess of billings on contracts (also referred to as “Unbilled Accounts Receivable”) in the accompanying Condensed Consolidated Balance Sheets represent unbilled amounts earned and reimbursable under contracts. These amounts become billable according to the contract terms, which usually consider the passage of time, achievement of milestones or completion of the project. Generally, such unbilled amounts will be billed and collected over the next twelve months. As of September 27, 2013 and December 28, 2012, $314.8 million and $264.9 million, respectively, of Unbilled Accounts Receivable are not expected to become billable within twelve months of the balance sheet date and, as a result, are included as a component of “Other long-term assets.” As of September 27, 2013, we reclassified $105.0 million of unbilled amounts representing performance-based incentive fees from work managing chemical demilitarization programs from “Other longer-term assets” to Unbilled Accounts Receivable.
	Accounts receivable and Unbilled Accounts Receivable include certain amounts recognized related to unapproved change orders (amounts representing the value of proposed contract modifications, but which are unapproved as to both price and scope) and claims (amounts in excess of agreed contract prices that we seek to collect from our clients or others) that have not been collected and, in the case of balances included in accrued earnings in excess of billings on contracts, may not be billable until an agreement, or in the case of claims, a settlement is reached. Generally, these items have not been material and have been resolved in the ordinary course of business. As of September 27, 2013, we had one project with an accounts receivable balance of $73.5 million relating to an outstanding claim. See Note 16, “Commitments and Contingencies,” for further discussion regarding the Department of Energy (“DOE”) Deactivation, Demolition, and Removal Project.
	Our accounts receivable include retentions associated with long-term contracts, which are generally not billable until near or at the completion of the projects or milestones and/or delivery of services. As such, these amounts will generally be billed for contracts with terms in excess of one year from the service date. Our Unbilled Accounts Receivable includes amounts related to milestone payment clauses, which provide for payments to be received beyond a year from the date service occurs. Based on our historical experience, we generally consider the collection risk related to these amounts to be low. When events or conditions indicate that the amounts outstanding may become uncollectible, an allowance is estimated and recorded. As of September 27, 2013 and December 28, 2012, we had financing receivables with contractual terms in excess of one year of $137.2 million and $121.4 million, respectively.
	The following table summarizes the components of our accounts receivable and Unbilled Accounts Receivable with the U.S. federal government and with other customers as of September 27, 2013 and December 28, 2012:
					September 27,		December 28,
		(In millions)			2013		2012
		Accounts receivable:
			U.S. federal government		$	408	$	376.2
			Others			1,056.80		1,178.60
				Total accounts receivable	$	1,464.80	$	1,554.80
		Unbilled Accounts Receivable:
			U.S. federal government		$	863.8	$	892.7
			Others			910.7		756.5
				Total		1,774.50		1,649.20
				Less: Amounts included in Other long-term assets		-314.8		-264.9
				Unbilled Accounts Receivable	$	1,459.70	$	1,384.30

INVENTORY

INVENTORY	9 Months Ended
	Sep. 27, 2013
Notes to Financial Statements [Abstract]	'
INVENTORY	'
	NOTE 5. INVENTORY
	The table below presents the components of inventory
				September 27,		December 28,
		(In millions)		2013		2012
		Raw materials		$	9.8	$	14.2
		Work in progress			5.8		9.8
		Finished goods			26.9		24.9
		Supplies			11.2		12.6
			Total	$	53.7	$	61.5

JOINT_VENTURES

JOINT VENTURES	9 Months Ended
	Sep. 27, 2013
Notes to Financial Statements [Abstract]	'
JOINT VENTURES	'
	NOTE 6. JOINT VENTURES
	The following are examples of activities currently being performed by our significant consolidated and unconsolidated joint ventures:
	Engineering, procurement and construction of a concrete dam;
	Liquid waste management services, including the decontamination of a former nuclear fuel reprocessing facility and nuclear hazardous waste processing;
	Management of ongoing tank cleanup effort, including retrieving, treating, storing and disposing of nuclear waste that is stored at tank farms;
	Management, operation and cleanup services, including commercial operations, decontamination, decommissioning, and waste management of a nuclear facility in the United Kingdom (“U.K.”); and
	Operations, maintenance, asset management and project management services to the Canadian energy sector.
	In accordance with the current consolidation standard, we analyzed all of our joint ventures and classified them into two groups:
	Joint ventures that must be consolidated because they are either not variable interest entities (“VIEs”) and we hold the majority voting interest, or because they are VIEs of which we are the primary beneficiary; and
	Joint ventures that do not need to be consolidated because they are either not VIEs and we do not hold a majority voting interest, or because they are VIEs of which we are not the primary beneficiary.
	We perform a quarterly review of our joint ventures to determine whether there were any changes in the status of the VIEs or changes to the primary beneficiary designation of each VIE. We determined that no such changes occurred during the nine months ended September 27, 2013.
	In the table below, we have aggregated financial information relating to our VIEs because their nature and risk and reward characteristics are similar. None of our current joint ventures that meets the characteristics of a VIE is individually significant to our consolidated financial statements.
	Consolidated Joint Ventures
	The following table presents the total assets and liabilities of our consolidated joint ventures:
						September 27,		December 28,
		(In millions)				2013		2012
		Cash and cash equivalents				$	88	$	80.1
		Net accounts receivable					275.6		282.2
		Other current assets					2.6		2.9
		Noncurrent assets					120.6		143.3
					Total assets	$	486.8	$	508.5
		Accounts and subcontractors payable				$	119.7	$	185
		Billings in excess of costs and accrued earnings on contracts					26.5		8.7
		Accrued expenses and other					54.5		40
		Noncurrent liabilities					11		22.7
			Total liabilities				211.7		256.4
		Total URS equity					126.7		110.2
		Noncontrolling interests					148.4		141.9
			Total owners’ equity				275.1		252.1
					Total liabilities and owners’ equity	$	486.8	$	508.5
	Total revenues of the consolidated joint ventures were $290.9 million and $369.9 million for the three months ended September 27, 2013 and September 28, 2012, respectively, and $820.3 million and $1.1 billion for the nine months ended September 27, 2013 and September 28, 2012, respectively.
	The assets of our consolidated joint ventures are restricted for use only by the particular joint venture and are not available for our general operations.
	Unconsolidated Joint Ventures
	We use the equity method of accounting for our unconsolidated joint ventures. Under the equity method, we recognize our proportionate share of the net earnings of these joint ventures as a single line item under “Equity in income of unconsolidated joint ventures” in our Condensed Consolidated Statements of Operations.
	The table below presents financial information, derived from the most recent financial statements provided to us, in aggregate, for our unconsolidated joint ventures:
			Unconsolidated
		(In millions)	VIEs
		27-Sep-13
		Current assets	$	681.8
		Noncurrent assets	$	35.3
		Current liabilities	$	463.6
		Noncurrent liabilities	$	10.3
		28-Dec-12
		Current assets	$	594.1
		Noncurrent assets	$	23.8
		Current liabilities	$	372.5
		Noncurrent liabilities	$	7.8
		Three months ended September 27, 2013 (1)
		Revenues	$	480.9
		Cost of revenues	$	-429.8
		Income from continuing operations before tax	$	51.1
		Net income	$	47.4
		Three months ended September 28, 2012 (1)
		Revenues	$	477
		Cost of revenues	$	-412.5
		Income from continuing operations before tax	$	64.5
		Net income	$	62
		Nine months ended September 27, 2013 (1)
		Revenues	$	1,592.80
		Cost of revenues	$	-1,423.50
		Income from continuing operations before tax	$	169.3
		Net income	$	157.1
		Nine months ended September 28, 2012 (1)
	Revenues	$	1,221.70
	Cost of revenues	$	-1,044.60
	Income from continuing operations before tax	$	177.1
	Net income	$	166
Income from unconsolidated U.S. joint ventures is generally not taxable in most tax jurisdictions in the U.S. The tax expenses on our other unconsolidated joint ventures are primarily related to foreign taxes.
We received $22.6 million and $21.4 million, respectively, of distributions from unconsolidated joint ventures for the three months ended September 27, 2013 and September 28, 2012 and $74.7 million and $67.9 million, respectively, for the nine months ended September 27, 2013 and September 28, 2012.
Exposure to Loss
In addition to potential losses arising out of the carrying values of the assets and liabilities of our unconsolidated joint ventures, our maximum exposure to loss also includes performance assurances and guarantees we sometimes provide to clients on behalf of joint ventures that we do not directly control. We enter into these guarantees primarily to support the contractual obligations associated with the joint ventures' projects. The potential payment amount of an outstanding performance guarantee is typically the remaining cost of work to be performed by or on behalf of third parties under engineering and construction contracts.
However, the majority of the unconsolidated joint ventures in which we participate involve cost-reimbursable, level-of-effort projects that are accounted for as service-type projects, not engineering and construction projects that would follow the percentage-of-completion or completed-contract accounting method. Revenues for service-type contracts are recognized in proportion to the number of service activities performed, in proportion to the direct costs of performing the service activities, or evenly across the period of performance, depending upon the nature of the services provided. The services we provide on these cost-reimbursable contracts are management and operations services for government clients and operations and maintenance services for non-government clients. We believe that, due to the continual changes we experience in client funding and scope definitions, reliable estimates of performance guarantees cannot be calculated because they cannot be reliably predicted. In addition, we participate in joint ventures in which the level of our participation is so minimal that we do not have access to those joint ventures' estimates to complete. The joint ventures where we perform engineering and construction contracts and where we have access to the estimates to complete, which are needed to calculate the performance guarantees, are immaterial.

PROPERTY_AND_EQUIPMENT

PROPERTY AND EQUIPMENT	9 Months Ended
	Sep. 27, 2013
Notes to Financial Statements [Abstract]	'
PROPERTY AND EQUIPMENT	'
	NOTE 7. PROPERTY AND EQUIPMENT
	Our property and equipment consisted of the following:
				September 27,		December 28,
		(In millions)		2013		2012
		Construction and mining equipment		$	250.4	$	266.4
		Computer software			242.1		219.5
		Computer hardware			217.1		198.2
		Vehicles and automotive equipment			174.5		172.2
		Leasehold improvements			141.5		130.1
		Land and buildings			102		114.1
		Furniture and fixtures			92.8		97.7
		Other equipment			76.3		72.4
		Construction in progress			5		15.6
					1,301.70		1,286.20
		Accumulated depreciation and amortization			-670.6		-598.7
			Property and equipment, net (1)	$	631.1	$	687.5
	The unamortized computer software costs were $78.4 million and $71.1 million, respectively, as of September 27, 2013 and December 28, 2012.
	We recorded gains of $12.7 million and $22.2 million on disposal of property and equipment for the three and nine months ended September 27, 2013, respectively, mainly resulting from the sale of equipment, land and buildings in Canada. These gains were recorded in “Cost of revenues” on our Condensed Consolidated Statements of Operations.

ACQUISITION

ACQUISITION	9 Months Ended
	Sep. 27, 2013
Notes to Financial Statements [Abstract]	'
ACQUISITION	'
	NOTE 8. ACQUISITION
	Flint Acquisition
	On May 14, 2012, we acquired the outstanding common shares of Flint for C$25.00 per share in cash, or C$1.24 billion (US$1.24 billion based on the exchange rate on the date of the acquisition) and paid $110.3 million of Flint's debt prior to the closing of the transaction in exchange for a promissory note from Flint. In connection with the acquisition of Flint, we recognized $16.1 million for the nine months ended September 28, 2012 in “Acquisition-related expense” on our Condensed Consolidated Statements of Operations. During the quarter ended September 28, 2012, we recorded an adjustment to reduce the amount previously recorded in “Acquisition-related expense” of $0.8 million.
	Investments in and advances to unconsolidated joint ventures.  As a result of the Flint acquisition, we hold a 50% voting and economic interest in a joint venture that provides operations, maintenance, asset management and project management services to the Canadian energy sector. The fair value of our investment in this joint venture at the acquisition date was higher than the underlying equity interest. This difference of $128.5 million includes $38.0 million representing intangible assets, and the remaining amount representing goodwill. The intangible assets are being amortized, as a reduction to earnings against the equity in income of this unconsolidated joint venture, over a period ranging from three to 40 years. For the three months ended September 27, 2013 and September 28, 2012, amortization of these intangible assets was $2.0 million and $2.2 million, respectively. For the nine months ended September 27, 2013 and September 28, 2012, amortization of these intangible assets was $5.8 million and $3.7 million, respectively.
	Pro forma results. The unaudited financial information in the table below summarizes the combined results of the operations of URS Corporation and Flint for the nine months ended September 28, 2012, on a pro forma basis, as though the companies had been combined as of December 31, 2011. The pro forma financial information includes the accounting effects of the business combination, including adjustments to the amortization of intangible assets, depreciation of property, plant and equipment, interest expense, adjustments to conform to U.S. GAAP, new compensation agreements, and foreign currency gains or losses arising from internal financing arrangements. The pro forma financial information is presented for informational purposes only and is not indicative of the results of operations that would have been achieved if the acquisition had taken place at December 31, 2011 nor should it be taken as indicative of our future consolidated results of operations.
				Pro Forma
				Nine Months
		Unaudited		Ended
		(In millions, except per share data)		28-Sep-12
		Revenues		$	8,813.30
		Net income (loss) including noncontrolling interests		$	306.9
		Net income (loss) attributable to URS		$	234
		Earnings (loss) per share:
			Basic EPS	$	3.15
			Diluted EPS	$	3.14
	The table below shows the material pre-tax, nonrecurring adjustment in the pro forma financial information for the nine months ended September 28, 2012:
				Pro Forma
		Pre-tax, nonrecurring adjustment (In millions)		Nine Months Ended
					28-Sep-12
		Acquisition-related expenses		$	27.7

GOODWILL

GOODWILL	9 Months Ended
	Sep. 27, 2013
Notes to Financial Statements [Abstract]	'
GOODWILL	'
	NOTE 9. GOODWILL
	Interim Goodwill Impairment Review
	During the third quarter of 2013, our reporting units experienced declines in their actual and projected performance primarily driven by the government shutdown in October 2013, the continuing effects of sequestration, and uncertainty about the federal budget. In addition, the commercial markets were impacted by atypical wet weather in Western Canada, the continued low price of natural gas, and regulatory uncertainty and stagnant demand for electricity. The lowered revenues and earnings projection prompted us to perform an interim goodwill impairment test as of September 27, 2013.
	We estimated fair value using discounted cash flow analyses, referred to as the income approach. The income approach uses a reporting unit's projection of estimated cash flows and discounts those back to the present using a weighted-average cost of capital that reflects current market conditions. To arrive at our cash flow projections, we consider estimates of economic and market activity over a projection period of ten years, management's expectation of growth rates in revenues, costs, and estimates of future expected changes in operating margins and capital expenditures. Other significant estimates and assumptions include long-term growth rates and changes in future working capital requirements. Based on this analysis, it was determined that there was no impairment.
	We also considered indications obtained from the market approach. We applied market multiples derived from market prices of stocks of companies that are engaged in the same or similar lines of business as our reporting units and that are actively traded on a free and open market, or applied market multiples derived from transactions of significant interests in companies engaged in the same or similar lines of business as our reporting units, to the corresponding measure of financial performance for our reporting units that produces estimates of value at the noncontrolling marketable level.
	In reaching our final estimate of value, we considered the fair values derived from using both the income and market approaches. We gave primary weight to the income approach because it was deemed to be the most applicable.
	Our interim impairment test indicated no impairment for any of our reporting units because the fair value of each reporting unit substantially exceeded its carrying value. Below is a table showing, for each reporting unit, the percentage of the fair value that exceeded the carrying value:
	(in millions)				Goodwill Balance as of September 27, 2013		Reporting Unit Fair Value		Reporting Unit Carrying Value		Percent Above Carrying Value
	Infrastructure & Environment Operating Segment				$	761	$	2,220.00	$	1,509.30		47.10%
	Federal Services Operating Segment					707.3		1,515.00		1,011.60		49.80%
	Within the Energy & Construction Operating Segment:
		Global Management and Operations Services Group				565.4		1,375.00		925.3		48.60%
		Civil Construction & Mining Group				293.9		474		363		30.60%
		Industrial/Process Group				189.3		336		239		40.60%
		Power Group				735.1		923		823.9		12.00%
			Total Energy & Construction Operating Segment			1,783.70		3,108.00		2,351.20		32.20%
	Oil & Gas Operating Segment					451.3		1,619.00		1,366.60		18.50%
				Total	$	3,703.30	$	8,462.00	$	6,238.70		35.60%

INDEBTEDNESS

INDEBTEDNESS	9 Months Ended
	Sep. 27, 2013
Notes to Financial Statements [Abstract]	'
INDEBTEDNESS	'
	NOTE 10. INDEBTEDNESS
	Indebtedness consisted of the following:
				September 27,		December 28,
		(In millions)		2013		2012
		Term loan, net of debt issuance costs		$	652.1	$	666.3
		3.85% Senior Notes (net of discount)			399.6		399.5
		5.00% Senior Notes (net of discount)			599.5		599.5
		7.50% Canadian Notes (including premium)			193.8		203.8
		Revolving line of credit			38.8		100.5
		Other indebtedness			111.4		94.7
			Total indebtedness		1,995.20		2,064.30
		Less:
		Current portion of long-term debt			92.2		71.8
			Long-term debt	$	1,903.00	$	1,992.50
	2011 Credit Facility
	As of September 27, 2013 and December 28, 2012, the outstanding balance of the term loan under our senior credit facility (“2011 Credit Facility”) was $655.0 million and $670.0 million, respectively. As of September 27, 2013 and December 28, 2012, the interest rates applicable to the term loan were 1.68% and 1.71%, respectively. Loans outstanding under our 2011 Credit Facility bear interest, at our option, at the base rate or at LIBOR plus, in each case, an applicable per annum margin. The applicable margin is determined based on the better of our debt ratings or our leverage ratio in accordance with a pricing grid. The interest rate at which we normally borrow is LIBOR plus 150 basis points.
	On May 23, 2013, we amended our 2011 Credit Facility to revise our Eurocurrency rates to include other indices beyond LIBOR.
	We were in compliance with the covenants of our 2011 Credit Facility as of September 27, 2013
	.
	Revolving line of credit. Our revolving line of credit is used to fund daily operating cash needs and to support our standby letters of credit. In the ordinary course of business, the use of our revolving line of credit is a function of collection and disbursement activities. Our daily cash needs generally follow a predictable pattern that parallels our payroll cycles, which dictate, as necessary, our short-term borrowing requirements.
	As of September 27, 2013 and December 28, 2012, we had an outstanding balance of $38.8 million and $100.5 million on our revolving line of credit, respectively. As of September 27, 2013, we had issued $123.1 million of letters of credit, leaving $838.1 million available under our revolving credit facility.
	Senior Notes and Canadian Notes
	On March 15, 2012, we issued, in a private placement, $400.0 million aggregate principal amount of 3.85% Senior Notes due on April 1, 2017 and $600.0 million aggregate principal amount of 5.00% Senior Notes due on April 1, 2022 (collectively, the “Senior Notes”). As of September 27, 2013, the outstanding balance of the Senior Notes was $999.1 million, net of $0.9 million of discount.
	The Senior Notes are our general unsecured senior obligations and rank equally with our other existing and future unsecured senior indebtedness. The Senior Notes are fully and unconditionally guaranteed (the “Guarantees”) by each of our current and future domestic subsidiaries that are guarantors under our 2011 Credit Facility or that are wholly owned domestic obligors or wholly owned domestic guarantors, individually or collectively, under any future indebtedness of our subsidiaries in excess of $100.0 million (the “Guarantors”). The Guarantees are the Guarantors' unsecured senior obligations and rank equally with the Guarantors' other existing and future unsecured senior indebtedness. See Note 18, “Condensed Consolidating Financial Information.”
	In connection with the sale of the Senior Notes, we entered into a registration rights agreement. On April 17, 2013, we filed with the Securities and Exchange Commission (“SEC”), and subsequently amended, a registration statement, under which we are offering to exchange any privately placed Senior Notes with substantially similar notes, except that the newly exchanged notes will be unrestricted and freely tradable securities. The registration statement has not yet been declared effective by the SEC. Until we complete our exchange offer, we will be required to pay additional interest of 50 basis points to the holders of the Senior Notes.
	On May 14, 2012, we guaranteed Flint's senior notes (the “Canadian Notes”) with an outstanding face value of C$175.0 million (US$175.0 million). As of September 27, 2013, the outstanding balance of the Canadian Notes was $193.8 million, including $24.3 million of premium. On October 11, 2013, Flint announced that it will redeem all of the Canadian Notes. The redemption is expected to take place in December 2013.
	We were in compliance with the covenants of our Senior Notes and Canadian Notes as of September 27, 2013.
	Other Indebtedness
	Notes payable, five-year loan notes, and foreign credit lines. As of September 27, 2013 and December 28, 2012, we had outstanding amounts of $58.4 million and $35.5 million, respectively, in notes payable, five-year loan notes, and foreign lines of credit. The weighted-average interest rates of these other forms of indebtedness were approximately 3.62% and 4.68% as of September 27, 2013 and December 28, 2012, respectively. Notes payable primarily include notes used to finance the purchase of vehicles, construction equipment, office equipment, computer equipment and furniture.
	As of September 27, 2013 and December 28, 2012, we maintained several credit lines with an aggregate borrowing capacity of $50.5 million and $50.8 million, respectively, and had remaining borrowing capacity of $44.7 and $47.7 million, respectively.
	Capital Leases. As of September 27, 2013 and December 28, 2012, we had obligations under our capital leases of approximately $53.0 million and $59.2 million, respectively, consisting primarily of leases for office equipment, computer equipment, furniture, vehicles and automotive equipment, and construction equipment.
	Foreign Currency Translation Gains (Losses) Related to Intercompany Loans. We recorded foreign currency translation gains of $1.6 million and losses of $4.2 million on intercompany loans for the three and nine months ended September 27, 2013, respectively. We also recorded foreign currency translation gains of $10.8 million and $4.4 million on intercompany loans for the three and nine months ended September 28, 2012, respectively. These gains and losses are recorded in “Other income (expenses)” on our Condensed Consolidated Statements of Operations.

FAIR_VALUES_OF_DEBT_INSTRUMENT

FAIR VALUES OF DEBT INSTRUMENTS AND DERIVATIVE INSTRUMENTS	9 Months Ended
	Sep. 27, 2013
Notes to Financial Statements [Abstract]	'
FAIR VALUES OF DEBT INSTRUMENTS AND DERIVATIVE INSTRUMENTS	'
	NOTE 11. FAIR VALUE OF DEBT INSTRUMENTS AND DERIVATIVE INSTRUMENTS
	2011 Credit Facility
	As of September 27, 2013 and December 28, 2012, the estimated fair market values of the term loan under our 2011 Credit Facility were approximately $651.7 million and $667.3 million, respectively. The carrying values of this term loan on our Condensed Consolidated Balance Sheets as of September 27, 2013 and December 28, 2012 were $655.0 million and $670.0 million, respectively, excluding unamortized debt issuance costs. The fair value of our term loan was derived by taking the mid-point of the trading prices from an observable market input (Level 2) in the secondary loan market and multiplying it by the outstanding balance of our term loan.
	Senior Notes and Canadian Notes
	As of both September 27, 2013 and December 28, 2012, the estimated fair market value of the Senior Notes and Canadian Notes was approximately $1.2 billion and the carrying value of these notes on our Condensed Consolidated Balance Sheets was $1.2 billion, excluding unamortized discounts and premiums. The fair value of the Senior Notes and Canadian Notes was derived by taking the mid-point of the trading prices from an observable market input (Level 2) in the secondary loan market and multiplying it by the outstanding balance of the notes.
	Derivative Instruments
	We use our derivative instruments as a risk management tool and not for trading or speculative purposes. The fair value of each derivative instrument is based on mark-to-model measurements that are interpolated from observable market data, including spot and forward rates, as of September 27, 2013 and for the duration of each derivative's terms. There were no significant derivative instruments outstanding during the nine months ended September 27, 2013.
	Foreign Currency Exchange Contracts
	We operate our business globally and our foreign subsidiaries conduct businesses in various foreign currencies. Therefore, we are subject to foreign currency risk. From time to time, we may purchase derivative financial instruments in the form of foreign currency exchange contracts to manage specific foreign currency exposures.
	In March 2012, we entered into various foreign currency forward contracts with an aggregate notional amount of C$1.25 billion (equivalent to US$1.25 billion) with maturity windows ranging from March 7, 2012 to May 31, 2012. The primary objective of the contracts was to manage our exposure to foreign currency transaction risk related to the funding of our pending acquisition of Flint in Canadian dollars. These contracts settled during the second quarter of 2012. For the nine months ended September 28, 2012, we recorded a net loss of $0.3 million on our foreign currency forward contracts in “Other income (expense)” on our Condensed Consolidated Statements of Operations.

BILLINGS_IN_EXCESS_OF_COSTS_AN

BILLINGS IN EXCESS OF COSTS AND ACCRUED EARNINGS ON CONTRACTS	9 Months Ended
	Sep. 27, 2013
Notes to Financial Statements [Abstract]	'
BILLINGS IN EXCESS OF COSTS AND ACCRUED EARNINGS ON CONTRACTS	'
	NOTE 12. BILLINGS IN EXCESS OF COSTS AND ACCRUED EARNINGS ON CONTRACTS
	Billings in excess of costs and accrued earnings on contracts in the accompanying Condensed Consolidated Balance Sheets consist of cash collected from clients and billings to clients on contracts in advance of work performed, advance payments negotiated as a contract condition, estimated losses on uncompleted contracts, normal profit liabilities, project-related legal liabilities, and other project-related reserves. The unearned project-related costs will be earned over the next twelve months or over the duration of the contracts.
	The following table summarizes the components of billings in excess of costs and accrued earnings on contracts:
				September 27,		December 28,
		(In millions)		2013		2012
		Billings in excess of costs and accrued earnings on contracts		$	182.1	$	211.7
		Project-related legal liabilities and other project-related reserves			31.7		55.2
		Advance payments negotiated as a contract condition			5.6		9.8
		Normal profit liabilities			0.9		4.8
		Estimated losses on uncompleted contracts			4.8		7.6
			Total	$	225.1	$	289.1

EMPLOYEE_RETIREMENT_AND_POSTRE

EMPLOYEE RETIREMENT AND POST-RETIREMENT BENEFIT PLANS	9 Months Ended
	Sep. 27, 2013
Notes to Financial Statements [Abstract]	'
EMPLOYEE RETIREMENT AND POST-RETIREMENT BENEFIT PLANS	'
	NOTE 13. EMPLOYEE RETIREMENT AND POST-RETIREMENT BENEFIT PLANS
	Defined Benefit Plans
	We sponsor a number of pension and unfunded supplemental executive retirement plans. The components of our net periodic pension costs relating to our defined benefit plans for the three months ended September 27, 2013 and September 28, 2012 were as follows:
				Three Months Ended
				Domestic Plans				Foreign Plans
				September 27,		September 28,		September 27,		September 28,
	(In millions)			2013		2012		2013		2012
	Service cost			$	2.2	$	2	$	0.1	$	0.1
	Interest cost				4.4		4.7		5.7		5.7
	Expected return on plan assets				-4.8		-4.4		-6		-5.6
	Amortization of:
		Prior service costs			-0.1		-0.7		—		—
		Net loss			3.9		2.4		—		—
			Net periodic pension costs	$	5.6	$	4	$	-0.2	$	0.2
				Nine Months Ended
				Domestic Plans				Foreign Plans
				September 27,		September 28,		September 27,		September 28,
	(In millions)			2013		2012		2013		2012
	Service cost			$	6.6	$	6	$	0.3	$	0.3
	Interest cost				13.2		14.1		17.1		16.9
	Expected return on plan assets				-14.4		-13.2		-18		-16.6
	Amortization of:
		Prior service costs			-0.3		-2.1		—		—
		Net loss			11.7		7.2		—		—
			Net periodic pension costs	$	16.8	$	12	$	-0.6	$	0.6
	During the three and nine months ended September 27, 2013, we made cash contributions, including employer-directed benefit payments, of $6.4 million and $20.3 million, respectively, to the domestic and foreign defined benefit plans. We expect to make additional cash contributions, including estimated employer-directed benefit payments, of approximately $10.3 million for the remainder of our 2013 fiscal year.
	Post-retirement Benefit Plans
	We sponsor a number of retiree health and life insurance benefit plans (“post-retirement benefit plans”). The components of our net periodic benefit cost relating to the post-retirement benefit plans for the three and nine months ended September 27, 2013 and September 28, 2012 were as follows:
				Three Months Ended				Nine Months Ended
				September 27,		September 28,		September 27,		September 28,
	(In millions)			2013		2012		2013		2012
	Interest cost			$	0.4	$	0.5	$	1.2	$	1.5
	Expected return on plan assets				-0.1		-0.1		-0.3		-0.3
	Amortization of:
		Net loss			0.1		—		0.3		—
			Net periodic benefit costs	$	0.4	$	0.4	$	1.2	$	1.2
	During the three and nine months ended September 27, 2013, we made cash contributions, including employer-directed benefit payments, of $0.9 million and $2.7 million, respectively, to the post-retirement benefit plans. We expect to make additional cash contributions, including estimated employer-directed benefit payments, of approximately $1.1 million for the remainder of our 2013 fiscal year.

STOCKHOLDERS_EQUITY

STOCKHOLDERS' EQUITY	9 Months Ended
	Sep. 27, 2013
Notes to Financial Statements [Abstract]	'
STOCKHOLDERS' EQUITY	'
	NOTE 14. STOCKHOLDERS' EQUITY
	Dividend Program
	Our Board of Directors declared the following dividends:
	Declaration Date		Dividend Per Share			Record Date			Total Maximum Payment			Payment Date
	(In millions, except per share data)
	24-Feb-12		$	0.2			16-Mar-12		$	15.2			6-Apr-12
	4-May-12		$	0.2			15-Jun-12		$	15.4			6-Jul-12
	3-Aug-12		$	0.2			14-Sep-12		$	15.4			5-Oct-12
	2-Nov-12		$	0.2			14-Dec-12		$	15.4			4-Jan-13
	22-Feb-13		$	0.21			15-Mar-13		$	16			5-Apr-13
	3-May-13		$	0.21			14-Jun-13		$	16			5-Jul-13
	2-Aug-13		$	0.21			13-Sep-13		$	16			4-Oct-13
	1-Nov-13		$	0.21			13-Dec-13			NA			10-Jan-14
	NA =ot available
	Equity Incentive Plan
	On March 28, 2013, the Board adopted, and on May 23, 2013, the stockholders approved, an amendment and restatement of our 2008 Equity Incentive Plan (“2008 Incentive Plan”). Among other provisions, the amendment and restatement increased the aggregate number of shares of common stock authorized for issuance under the plan by 1.5 million shares and the term of the plan was extended until May 23, 2018. As of September 27, 2013, approximately 3.0 million shares had been issued as restricted stock awards and 1.6 million shares were issuable upon the vesting of restricted stock units under our 2008 Incentive Plan. In addition, approximately 1.9 million shares remained reserved for future grants under our 2008 Incentive Plan.
	On March 27, 2013, the Compensation Committee of the Board of Directors approved the adoption of a new long-term incentive program for executive officers and other specified employees. Like the existing program, restricted stock unit awards are both time-based and time-and-performance-based. Under these awards, the performance-based grants will vest at the end of a three-year vesting period based on satisfaction of dual performance criteria: a net income performance condition measured on a cumulative basis over a two-year performance period and a market condition based on meeting or exceeding the total shareholder return of the Russell 3000 Index, measured over a three-year performance period. The time-based grants will vest in equal annual tranches over three years. The grant date fair value was determined using a Monte Carlo simulation model and will be expensed on a straight-line basis over the vesting period.
	Stock Repurchase Program
	The following table summarizes our stock repurchase activities for the three and nine months ended September 27, 2013 and September 28, 2012:
				Three Months Ended						Nine Months Ended
		(In millions, except average price paid		September 27,			September 28,			September 27,			September 28,
		per share)		2013			2012			2013			2012
		Common stock repurchase shares			—			—			2			1
		Average price paid per share		$	—		$	—		$	45.55		$	40
		Cost of common stock repurchased		$	—		$	—		$	93.3		$	40
	Stock-Based Compensation
	We recognize stock-based compensation expense, net of estimated forfeitures, over the vesting periods in “General and administrative expenses” and “Cost of revenues” in our Condensed Consolidated Statements of Operations.
	The following table presents our stock-based compensation expense related to restricted stock awards and units and our employee stock purchase plan for the three and nine months ended September 27, 2013 and September 28, 2012:
							Three Months Ended						Nine Months Ended
							September 27,			September 28,			September 27,		September 28,
	(In millions)						2013			2012			2013		2012
	Stock-based compensation expense:
			Restricted stock awards and units				$	12.8		$	11		$	35.2	$	32.1
			Employee stock purchase plan					0.2			0.1			0.5		0.4
					Stock-based compensation expense		$	13		$	11.1		$	35.7	$	32.5
	Stock-based compensation expense included in:
			Cost of revenues				$	9.7		$	8.6		$	26.6	$	24.8
			General and administrative expenses					3.3			2.5			9.1		7.7
					Stock-based compensation expense		$	13		$	11.1		$	35.7	$	32.5
	Declaration Date		Dividend Per Share			Record Date			Total Maximum Payment			Payment Date
	(In millions, except per share data)
	24-Feb-12		$	0.2			16-Mar-12		$	15.2			6-Apr-12
	4-May-12		$	0.2			15-Jun-12		$	15.4			6-Jul-12
	3-Aug-12		$	0.2			14-Sep-12		$	15.4			5-Oct-12
	2-Nov-12		$	0.2			14-Dec-12		$	15.4			4-Jan-13
	22-Feb-13		$	0.21			15-Mar-13		$	16			5-Apr-13
	3-May-13		$	0.21			14-Jun-13		$	16			5-Jul-13
	2-Aug-13		$	0.21			13-Sep-13		$	16			4-Oct-13
	1-Nov-13		$	0.21			13-Dec-13			NA			10-Jan-14

SEGMENT_AND_RELATED_INFORMATIO

SEGMENT AND RELATED INFORMATION	9 Months Ended
	Sep. 27, 2013
Notes to Financial Statements [Abstract]	'
SEGMENT AND RELATED INFORMATION	'
	NOTE 15. SEGMENT AND RELATED INFORMATION
	We operate our business through the following four segments:
	Infrastructure & Environment Division provides program management, planning, design, engineering, construction and construction management, operations and maintenance, and decommissioning and closure services to the U.S. federal government, state and local government agencies, and private sector clients in the U.S. and internationally.
	Federal Services Division provides services to various U.S. federal government agencies, primarily the Department of Defense. These services include program management, planning, design and engineering, systems engineering and technical assistance, construction and construction management, operations and maintenance, IT services, and decommissioning and closure.
	Energy & Construction Division provides program management, planning, design, engineering, construction and construction management, operations and maintenance, and decommissioning and closure services to the U.S. federal government, state and local government agencies, and private sector clients in the U.S. and internationally.
	Oil & Gas Division provides oilfield services, including rig transportation and fluid hauling services; oil and gas production services, including mechanical, electrical and instrumentation services; facility and pipeline construction; module fabrication; and maintenance services for the oil and gas industry in the U.S. and Canada.
	These four segments operate under separate management groups and produce discrete financial information. Their operating results also are reviewed separately by management. The accounting policies of the reportable segments are the same as those described in the summary of significant accounting policies in our Annual Report on Form 10-K for the fiscal year ended December 28, 2012. The information disclosed in our condensed consolidated financial statements is based on the four segments that compose our current organizational structure.
	The following table presents summarized financial information for our reportable segments. “Inter-segment, eliminations and other” in the following table includes eliminations of inter-segment sales and investments in subsidiaries. The segment balance sheet information presented below is included for informational purposes only. We do not allocate resources based upon the balance sheet amounts of individual segments. Our long-lived assets consist primarily of property and equipment.
						Three Months Ended						Nine Months Ended
						September 27,			September 28,			September 27,			September 28,
	(In millions)					2013			2012			2013			2012
	Revenues
	Infrastructure & Environment					$	922.3		$	920.7		$	2,833.20		$	2,851.10
	Federal Services						538.9			682.8			1,776.30			2,118.10
	Energy & Construction						775.5			781.5			2,168.70			2,285.10
	Oil & Gas (1)						532.6			592.2			1,672.30			869.7
	Inter-segment, eliminations and other						-33.8			-29.6			-120.5			-124.2
			Total revenues			$	2,735.50		$	2,947.60		$	8,330.00		$	7,999.80
	Equity in income (loss) of unconsolidated joint ventures
	Infrastructure & Environment					$	-0.9		$	3.3		$	0.1		$	3.1
	Federal Services						1.4			1.5			4.7			4.8
	Energy & Construction						17.6			24.1			54.2			66
	Oil & Gas (1)						-1			2.2			0.1			2.9
			Total equity in income of unconsolidated joint ventures			$	17.1		$	31.1		$	59.1		$	76.8
	URS operating income (loss) (2)
	Infrastructure & Environment					$	58.5		$	66.5		$	160.7		$	174.1
	Federal Services						57.6			64.8			225.3			217.5
	Energy & Construction						31.5			43.7			65.8			96.2
	Oil & Gas (1)						19.4			29.3			29.5			32.4
	Corporate (3)						-14.3			-21.8			-59.9			-78.1
			Total URS operating income (loss)			$	152.7		$	182.5		$	421.4		$	442.1
	Operating income (loss)
	Infrastructure & Environment					$	59.3		$	67.1		$	162.1		$	175.7
	Federal Services						57.6			64.8			225.3			217.5
	Energy & Construction						57.4			64.6			121.1			167.5
	Oil & Gas (1)						19.3			28.9			28.7			31.9
	Corporate (3)						-14.3			-21.8			-59.9			-78.1
			Total operating income (loss)			$	179.3		$	203.6		$	477.3		$	514.5
	Depreciation and amortization
	Infrastructure & Environment					$	12.4		$	13.1		$	37.3		$	41.8
	Federal Services						8.7			8.5			26.8			27.2
	Energy & Construction						10.6			13			33.9			36.8
	Oil & Gas (1)						29			36.2			92.1			54.9
	Corporate						2.2			1.7			6.4			4.8
			Total depreciation and amortization			$	62.9		$	72.5		$	196.5		$	165.5
	The operating results of Flint have been included in our consolidated results since the acquisition on May 14, 2012.
	We are providing information regarding URS operating income (loss) by segment because management uses this information to assess performance and make decisions about resource allocation. URS operating income is defined as segment operating income after reductions for pre-tax noncontrolling interests.
	Corporate includes expenses related to corporate functions and acquisition-related expenses.
	Reconciliations of URS operating income (loss) by segment to segment operating income (loss) for the three and nine months ended September 27, 2013 and September 28, 2012 are as follows:
						Three Months Ended September 27, 2013
						Infrastructure						Energy			Oil
						&			Federal			&			&
	(In millions)					Environment			Services			Construction			Gas		Corporate		Consolidated
	URS operating income (loss)					$	58.5		$	57.6		$	31.5		$	19.4	$	-14.3	$	152.7
	Noncontrolling interests						0.8			—			25.9			-0.1		—		26.6
				Operating income (loss)		$	59.3		$	57.6		$	57.4		$	19.3	$	-14.3	$	179.3
						Three Months Ended September 28, 2012
						Infrastructure						Energy			Oil
						&			Federal			&			&
	(In millions)					Environment			Services			Construction			Gas		Corporate		Consolidated
	URS operating income (loss)					$	66.5		$	64.8		$	43.7		$	29.3	$	-21.8	$	182.5
	Noncontrolling interests						0.6			—			20.9			-0.4		—		21.1
				Operating income (loss)		$	67.1		$	64.8		$	64.6		$	28.9	$	-21.8	$	203.6
					Nine Months Ended September 27, 2013
					Infrastructure						Energy			Oil
					&			Federal			&			&
(In millions)					Environment			Services			Construction			Gas		Corporate		Consolidated
URS operating income (loss)					$	160.7		$	225.3		$	65.8		$	29.5	$	-59.9	$	421.4
Noncontrolling interests						1.4			—			55.3			-0.8		—		55.9
			Operating income (loss)		$	162.1		$	225.3		$	121.1		$	28.7	$	-59.9	$	477.3
					Nine Months Ended September 28, 2012
					Infrastructure						Energy			Oil
					&			Federal			&			&
(In millions)					Environment			Services			Construction			Gas		Corporate		Consolidated
URS operating income (loss)					$	174.1		$	217.5		$	96.2		$	32.4	$	-78.1	$	442.1
Noncontrolling interests						1.6			—			71.3			-0.5		—		72.4
			Operating income (loss)		$	175.7		$	217.5		$	167.5		$	31.9	$	-78.1	$	514.5
Total investments in and advances to unconsolidated joint ventures and property and equipment, net of accumulated depreciation, are as follows:
						September 27,			December 28,
	(In millions)					2013			2012
	Infrastructure & Environment					$	7.2		$	8.1
	Federal Services						3.4			5.7
	Energy & Construction						112.1			124.5
	Oil & Gas						130.1			140
			Total investments in and advances to unconsolidated joint ventures			$	252.8		$	278.3
	Infrastructure & Environment					$	138.4		$	141
	Federal Services						39			36.6
	Energy & Construction						58.3			60.1
	Oil & Gas						365.9			422.9
	Corporate						29.5			26.9
			Total property and equipment, net of accumulated depreciation			$	631.1		$	687.5
Total assets by segment are as follows:
					September 27,			December 28,
	(In millions)				2013			2012(1)
	Infrastructure & Environment				$	2,174.20		$	2,267.60
	Federal Services					1,552.40			1,642.80
	Energy & Construction					3,272.90			3,253.90
	Oil & Gas					1,783.30			1,904.40
	Corporate					307.5			192.3
			Total assets		$	9,090.30		$	9,261.00
Total assets by segments for the year ended December 28, 2012 were restated to correct an error related to prior year goodwill impairment charges. See Note 1, “Business, Basis of Presentation, and Accounting Policies.”
Major Customers and Other
Our largest clients are from our federal market sector. Within this sector, we have multiple contracts with our two major customers: the U.S. Army and the DOE. For the purpose of analyzing revenues from major customers, we do not consider the combination of all federal departments and agencies as one customer. The different federal agencies manage separate budgets. As such, reductions in spending by one federal agency do not affect the revenues we could earn from another federal agency. In addition, the procurement processes for federal agencies are not centralized, and procurement decisions are made separately by each federal agency. The loss of the federal government, the U.S. Army, or DOE as clients would have a material adverse effect on our business; however, we are not dependent on any single contract on an ongoing basis. We believe that the loss of any single contract would not have a material adverse effect on our business.
Our revenues from the U.S. Army and DOE by division for the three and nine months ended September 27, 2013 and September 28, 2012 are presented below:
				Three Months Ended						Nine Months Ended
				September 27,			September 28,			September 27,			September 28,
(In millions, except percentages)				2013			2012			2013			2012
The U.S. Army (1)
		Infrastructure & Environment		$	28.4		$	7		$	93		$	94.4
		Federal Services			244.4			347			886.6			1,094.50
		Energy & Construction			45.7			36.4			98.9			86.9
Total U.S. Army				$	318.5		$	390.4		$	1,078.50		$	1,275.80
Revenues from the U.S. Army as a percentage of our consolidated revenues					12%			13%			13%			16%
DOE
		Infrastructure & Environment		$	1		$	1		$	3.1		$	4.4
		Federal Services			4.6			4.1			15			17.2
		Energy & Construction			231.4			248.6			643.4			741.8
Total DOE				$	237		$	253.7		$	661.5		$	763.4
Revenues from DOE as a percentage of our consolidated revenues					9%			9%			8%			10%
Revenues from the federal market sector as a percentage of our consolidated revenues					34%			37%			35%			43%
The U.S. Army includes U.S. Army Corps of Engineers.

COMMITMENTS_AND_CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	9 Months Ended
	Sep. 27, 2013
Notes to Financial Statements [Abstract]	'
COMMITMENTS AND CONTINGENCIES	'
	NOTE 16. COMMITMENTS AND CONTINGENCIES
	In the ordinary course of business, we and our affiliates are subject to various disputes, audits, investigations and legal proceedings. Additionally, as a government contractor, we are subject to audits, investigations, and claims with respect to our contract performance, pricing, costs, cost allocations, and procurement practices. The final outcomes of these various matters cannot be predicted or estimated with certainty. We are including information regarding the following matters:
	USAID Egyptian Projects: In March 2003, Washington Group International, Inc., a Delaware company (“WGI Delaware”), our wholly owned subsidiary, was notified by the Department of Justice that the federal government was considering civil litigation against WGI Delaware for potential violations of the U.S. Agency for International Development (“USAID”) source, origin, and nationality regulations in connection with five of WGI Delaware's USAID-financed host-country projects located in Egypt beginning in the early 1990s. In November 2004, the federal government filed an action in the United States District Court for the District of Idaho against WGI Delaware, Contrack International, Inc., and MISR Sons Development S.A.E., an Egyptian construction company, asserting violations under the Federal False Claims Act, the Federal Foreign Assistance Act of 1961, as well as common law theories of payment by mistake and unjust enrichment. The federal government seeks damages and civil penalties (including doubling and trebling of damages) for violations of the statutes as well as a refund of the approximately $373.0 million paid to WGI Delaware under the specified contracts. WGI Delaware has denied any liability in the action and contests the federal government's damage allegations and its entitlement to recovery. All USAID projects under the contracts have been completed and are fully operational.
	In March 2005, WGI Delaware filed motions in Idaho District Court and the United States Bankruptcy Court in Nevada contending that the federal government's Idaho action is barred under the plan of reorganization approved by the Bankruptcy Court in 2002 when WGI Delaware emerged from bankruptcy protection. In 2006, the Idaho action was stayed pending the bankruptcy-related proceedings. On April 24, 2012, the Bankruptcy Court ruled that the bulk of the federal government's claims under the False Claims and the Federal Foreign Assistance Acts are not barred. On November 7, 2012, WGI Delaware appealed the Bankruptcy Court's decision to the Ninth Circuit Bankruptcy Appellate Panel. On August 2, 2013, the Appellate Panel affirmed the Bankruptcy Court's decision. On September 26, 2013, WGI Delaware appealed the Appellate Panel's decision to the United States Ninth Circuit Court of Appeals.
	WGI Delaware intends to continue to defend this matter vigorously; however, WGI Delaware cannot provide assurance that it will be successful in these efforts. The potential range of loss and the resolution of these matters cannot be determined at this time primarily due to the very limited factual record that exists in light of the limited discovery that has been conducted to-date in the Idaho litigation; the fact that the matter involves unique and complex bankruptcy, international, and federal regulatory legal issues; the uncertainty concerning legal theories and their potential resolution by the courts; and the overall age of this matter, as well as a number of additional factors. Accordingly, no amounts have been accrued for the federal government claims in the Idaho action.
	New Orleans Levee Failure Class Action Litigation: From July 1999 through May 2005, Washington Group International, Inc., an Ohio company (“WGI Ohio”), a wholly owned subsidiary acquired by us on November 15, 2007, performed demolition, site preparation, and environmental remediation services for the U.S. Army Corps of Engineers on the east bank of the Inner Harbor Navigation Canal (the “Industrial Canal”) in New Orleans, Louisiana. On August 29, 2005, Hurricane Katrina devastated New Orleans. The storm surge created by the hurricane overtopped the Industrial Canal levee and floodwall, flooding the Lower Ninth Ward and other parts of the city. Fifty-nine personal injury and property damage class action lawsuits were filed in Louisiana State and federal court against several defendants, including WGI Ohio, seeking $200.0 billion in damages plus attorneys' fees and costs. Plaintiffs are residents and property owners who claim to have incurred damages from the breach and failure of the hurricane protection levees and floodwalls in the wake of Hurricane Katrina.
	All 59 lawsuits were pleaded as class actions but none have yet been certified as class actions. Along with WGI Ohio, the U.S. Army Corps of Engineers, the Board for the Orleans Levee District, and its insurer, St. Paul Fire and Marine Insurance Company were also named as defendants. At this time WGI Ohio and the Army Corps of Engineers are the remaining defendants. These 59 lawsuits, along with other hurricane-related cases not involving WGI Ohio, were consolidated in the United States District Court for the Eastern District of Louisiana (“District Court”).
	Plaintiffs allege that defendants were negligent in their design, construction and/or maintenance of the New Orleans levees. Specifically, as to WGI Ohio, plaintiffs allege that work WGI Ohio performed adjacent to the Industrial Canal damaged the levee and floodwall, causing or contributing to breaches and flooding. WGI Ohio did not design, construct, repair or maintain any of the levees or the floodwalls that failed during or after Hurricane Katrina. Rather, WGI Ohio performed work adjacent to the Industrial Canal as a contractor for the federal government.
	WGI Ohio filed a motion for summary judgment, seeking dismissal on grounds that government contractors are immune from liability. On December 15, 2008, the District Court granted WGI Ohio's motion for summary judgment, but several plaintiffs appealed that decision to the United States Fifth Circuit Court of Appeals on April 27, 2009. On September 14, 2010, the Court of Appeals reversed the District Court's summary judgment decision and WGI Ohio's dismissal, and remanded the case back to the District Court for further litigation. On August 1, 2011, the District Court decided that the government contractor immunity defense would not be available to WGI Ohio at trial, but would be an issue for appeal. Five of the cases were tried in District Court from September 12, 2012 through October 3, 2012. On April 12, 2013, the District Court ruled in favor of WGI Ohio and the Army Corps of Engineers, finding that the five plaintiffs failed to prove that WGI Ohio's or the Army Corps of Engineers' actions caused the failure of the Industrial Canal floodwall during Hurricane Katrina. On July 1, 2013, WGI Ohio filed a motion for summary judgment in District Court to dismiss all other related cases as a result of the District Court's April 2013 decision.
	WGI Ohio intends to continue to defend these matters vigorously; however, WGI Ohio cannot provide assurance that it will be successful in these efforts. The potential range of loss and the resolution of these matters cannot be determined at this time primarily due to the likelihood of an appeal, the unknown number of individual plaintiffs who are actually asserting claims against WGI Ohio; the uncertainty regarding the nature and amount of each individual plaintiff's damage claims; uncertainty concerning legal theories and factual bases that plaintiffs may present and their resolution by courts or regulators; and uncertainty about the plaintiffs' claims, if any, that might survive certain key motions of our affiliate, as well as a number of additional factors.
	DOE Deactivation, Demolition, and Removal Project: WGI Ohio executed a cost-reimbursable task order with the DOE in 2007 to provide deactivation, demolition and removal services at a New York State project site that, during 2010, experienced contamination and performance issues. In February 2011, WGI Ohio and the DOE executed a Task Order Modification that changed some cost-reimbursable contract provisions to at-risk. The Task Order Modification, including subsequent amendments, requires the DOE to pay all project costs up to $105.9 million, requires WGI Ohio and the DOE to equally share in all project costs incurred from $105.9 million to $145.9 million, and requires WGI Ohio to pay all project costs exceeding $145.9 million. In addition, in September 2011, WGI Ohio voluntarily paid a civil penalty related to the contamination incident. Through September 27, 2013, WGI Ohio has incurred total project costs of $252.3 million.
	Due to unanticipated requirements and permitting delays by federal and state agencies, as well as delays and related ground stabilization activities caused by Hurricane Irene, WGI Ohio has been required to perform work outside the scope of the Task Order Modification. Based on the changes and delays, requests for equitable adjustment (“REA”) amounting to $47.1 million and proposals related to the hurricane-caused impacts and other directed changes in the amount of $118.0 million were initially submitted to the DOE for approval. Through September 27, 2013, the DOE has approved one of the REAs for $0.9 million and has authorized $31.4 million of additional funding primarily related to the hurricane-caused impacts. Because WGI Ohio and the DOE were unsuccessful in settling the REAs and proposals, during 2013, WGI Ohio submitted several certified claims against the DOE pursuant to the Contracts Disputes Acts seeking recovery of $112.5 million of the above unfunded REA and proposal costs incurred through April 2013 and $5.0 million in fees on the expanded work scope. As of September 27, 2013, WGI Ohio has recorded $73.5 million in accounts receivable for project costs incurred to date in excess of the DOE contracted amount that may not be collected until the claims are resolved. The final project completion costs are not currently estimable due to continuing delays in permitting, other delays, and approval of a final project plan. WGI Ohio can provide no certainty that it will recover the $112.5 million in submitted DOE claims for costs incurred through April 2013 related to REAs, hurricane-caused work or other directed changes, as well as any other project costs after April 2013 that WGI Ohio is obligated to incur to finalize and complete this project including the accounts receivable, any of which could negatively impact URS' future results of operations.
	Bolivian Mine Services Agreement: In 2009, a mine service agreement performed by our wholly owned subsidiary, Washington Group Bolivia, was unilaterally terminated for convenience by the mine owner. The mine owner disputed the fair market value of mining equipment it was required to repurchase under the terms of the mine services agreement. Subsequently, on November 16, 2010, Washington Group Bolivia received a formal claim asserting breaches of contractual obligations and warranties, including the failure to adhere to the requisite professional standard of care while performing the mine services agreement. On June 17, 2011, Washington Group Bolivia received a formal demand for arbitration pursuant to the Rules of Arbitration of the International Chamber of Commerce (“ICC”) asserting claims up to $52.6 million. Washington Group Bolivia brought a $50 million counterclaim on August 3, 2012 against the mine owner asserting claims of wrongful termination and lost productivity. Arbitration on the mine owner's claims and Washington Group Bolivia's counterclaims commenced before the ICC. In the course of the arbitration proceedings, the mine owner has reduced its claims to approximately $32.2 million, while Washington Group Bolivia has refined its counterclaim amount to not more than $62.9 million. On August 9, 2013, a $10.5 million ICC arbitration tribunal award was issued against Washington Group Bolivia and, on September 5, 2013, the mine owner petitioned the United States District Court of Colorado to confirm the ICC arbitration award. On October 1, 2013, Washington Group Bolivia filed a cross motion to partially vacate the arbitration award in the District Court of Colorado.
	Washington Group Bolivia intends to continue to contest this matter vigorously; however, we cannot provide assurance that it will be successful in these efforts. We have accrued an estimated probable loss of $10.5 million related to this matter; however, we believe the loss may be recoverable under our insurance program.
	Canadian Pipeline Contract: In January 2010, a pipeline owner filed an action in the Court of Queen's Bench of Alberta, Canada against Flint, a company we acquired in May 2012, as well as against a number of other defendants, alleging that the defendants negligently provided pipe coating and insulation system services, engineering, design services, construction services, and other work, causing damage to and abandonment of the line. The pipeline owner alleges it has suffered approximately C$85.0 million in damages in connection with the abandonment and replacement of the pipeline. Flint was the construction contractor on the pipeline project. Other defendants were responsible for engineering and design-services and for specifying and providing the actual pipe, insulation and coating materials used in the line. In January 2011, the pipeline owner served a Statement of Claim on Flint and, in September 2011, Flint filed a Statement of Defense denying that the damages to the coating system of the pipeline were caused by any negligence or breach of contract of Flint. Flint believes the damages were caused or contributed to by the negligence of one or more of the co-defendants and/or by the negligent operation of the pipeline owner.
	Flint intends to continue to defend this matter vigorously; however, it cannot provide assurance that it will be successful, in whole or in part, in these efforts. The potential range of loss and the resolution of this matter cannot be determined at this time primarily due to the early stage of the discovery; the substantial uncertainty regarding the actual cause of the damage to or loss of the line; the nature and amount of each individual damage claim against the various defendants; and the uncertainty concerning legal theories and factual bases that the customer may present against all or some of the defendants.
	U.K. Joint Venture: On April 12, 2010, one of our U.K. joint ventures sent several bags of low level non-exempt radioactive waste to a waste disposal facility that was not licensed to handle such waste. On November 15, 2012, the U.K. Environment Agency and the U.K. Department for Transport initiated environmental regulatory proceedings against our U.K. joint venture in the Workington Magistrates' Court under the U.K. Environmental Permitting Regulations 2010, the Radioactive Substances Act 1993, the Carriage of Dangerous Goods and the use of Transportable Pressure Equipment Regulations 2009. On February 7, 2013, our U.K. joint venture entered a plea of guilty before the Magistrates' Court and the matter was referred to the Carlisle Crown Court (the “Crown Court”) for sentencing. On June 14, 2013, the Crown Court issued a fine equivalent to approximately $1.2 million. On July 9, 2013, our U.K. joint venture appealed the Crown Court's decision to the Court of Appeal Criminal Division.
	The resolution of outstanding claims and legal proceedings is subject to inherent uncertainty, and it is reasonably possible that any resolution of these claims and legal proceedings could have a material adverse effect on us, including a substantial charge to our earnings and operating results for that period; however, an estimate of all the reasonably possible losses cannot be determined at this time.
	Insurance
	Generally, our insurance program covers workers' compensation and employer's liability, general liability, automobile liability, professional errors and omissions liability, property, marine property and liability, and contractor's pollution liability (in addition to other policies for specific projects). We have also elected to retain a portion of the losses that occur through the use of various deductibles, limits, and self-insured retentions under our insurance programs. In addition, our insurance policies contain exclusions and sublimits that insurance providers may use to deny or restrict coverage. Excess liability, contractor's pollution liability, and professional liability insurance policies provide for coverages on a “claims-made” basis, covering only claims actually made and reported during the policy period currently in effect. Thus, if we do not continue to maintain these policies, we will have no coverage for claims made after the termination date even for claims based on events that occurred during the term of coverage. While we intend to maintain these policies, we may be unable to maintain existing coverage levels.
	Guarantee Obligations and Commitments
	As of September 27, 2013, we had the following guarantee obligations and commitments:
	We have agreed to indemnify one of our joint venture partners up to $25.0 million for any potential losses, damages, and liabilities associated with lawsuits in relation to general and administrative services we provide to the joint venture.
	As of September 27, 2013, we had $34.3 million in bank guarantees outstanding under foreign credit facilities and other banking arrangements.
	We also maintain a variety of commercial commitments that are generally made to support provisions of our contracts. In addition, in the ordinary course of business, we provide letters of credit to clients and others against advance payments and to support other business arrangements. We are required to reimburse the issuers of letters of credit for any payments they make under the letters of credit.
	In the ordinary course of business, we may provide performance assurances and guarantees related to our services. For example, these guarantees may include surety bonds, arrangements among our client, a surety, and us to ensure we perform our contractual obligations pursuant to our client agreement. If our services under a guaranteed project are later determined to have resulted in a material defect or other material deficiency, then we may be responsible for monetary damages or other legal remedies. When sufficient information about claims on guaranteed projects is available and monetary damages or other costs or losses are determined to be probable, we recognize such guarantee losses.

RECLASSIFICATIONS_OUT_OF_ACCUM

RECLASSIFICATIONS OUT OF ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	9 Months Ended
	Sep. 27, 2013
Notes to Financial Statements [Abstract]	'
RECLASSIFICATIONS OUT OF ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	'
	NOTE 17. RECLASSIFICATIONS OUT OF ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
	The accumulated balances and reporting period activities for the three and nine months ended September 27, 2013 and September 28, 2012 related to reclassifications out of accumulated other comprehensive income (loss) are summarized as follows:
	(In millions)			Pension and Post-retirement Related Adjustments		Foreign Currency Translation Adjustments		Loss on Derivative Instruments		Accumulated Other Comprehensive Income (Loss)
	Balances at June 29, 2012			$	-106.7	$	-14.6	$	-0.7	$	-122
		Other comprehensive income before reclassification			—		59.1		—		59.1
		Amounts reclassified from accumulated other comprehensive income:
			Prior service costs, net of tax (1)		-0.5		—		—		-0.5
			Actuarial (gains) losses, net of tax (1)		1.6		—		—		1.6
			Translation adjustment realized upon liquidation of foreign subsidiaries, net of tax (2)		—		0.1		—		0.1
		Net current-period other comprehensive income			1.1		59.2		—		60.3
	Balances at September 28, 2012			$	-105.6	$	44.6	$	-0.7	$	-61.7
	(In millions)			Pension and Post-retirement Related Adjustments		Foreign Currency Translation Adjustments		Loss on Derivative Instruments		Accumulated Other Comprehensive Income (Loss)
	Balances at June 28, 2013			$	-129.3	$	-52.7	$	-0.6	$	-182.6
		Other comprehensive income before reclassification			-1.1		26.6		—		25.5
		Amounts reclassified from accumulated other comprehensive income:
			Reclassification adjustment of prior derivative settlement, net of tax		—		—		0.1		0.1
			Prior service costs, net of tax (1)		-0.1		—		—		-0.1
			Actuarial (gains) losses, net of tax (1)		2.4		—		—		2.4
			Translation adjustment realized upon liquidation of foreign subsidiaries, net of tax (2)		—		0.1		—		0.1
		Net current-period other comprehensive income			1.2		26.7		0.1		28
	Balances at September 27, 2013			$	-128.1	$	-26	$	-0.5	$	-154.6
	(In millions)			Pension and Post-retirement Related Adjustments		Foreign Currency Translation Adjustments		Loss on Derivative Instruments		Accumulated Other Comprehensive Income (Loss)
	Balances at December 30, 2011			$	-108.8	$	-2	$	—	$	-110.8
		Other comprehensive income before reclassification			0.1		46.2		-0.7		45.6
		Amounts reclassified from accumulated other comprehensive income:
			Prior service costs, net of tax (1)		-1.3		—		—		-1.3
			Actuarial (gains) losses, net of tax (1)		4.4		—		—		4.4
			Translation adjustment realized upon liquidation of foreign subsidiaries, net of tax (2)		—		0.4		—		0.4
		Net current-period other comprehensive income			3.2		46.6		-0.7		49.1
	Balances at September 28, 2012			$	-105.6	$	44.6	$	-0.7	$	-61.7
	(In millions)			Pension and Post-retirement Related Adjustments		Foreign Currency Translation Adjustments		Loss on Derivative Instruments		Accumulated Other Comprehensive Income (Loss)
	Balances at December 28, 2012			$	-135.4	$	22.8	$	-0.6	$	-113.2
		Other comprehensive income before reclassification			0.3		-48.4		—		-48.1
		Amounts reclassified from accumulated other comprehensive income:
			Reclassification adjustment of prior derivative settlement, net of tax		—		—		0.1		0.1
			Prior service costs, net of tax (1)		-0.2		—		—		-0.2
			Actuarial (gains) losses, net of tax (1)		7.2		—		—		7.2
			Translation adjustment realized upon liquidation of foreign subsidiaries, net of tax (2)		—		-0.4		—		-0.4
		Net current-period other comprehensive income			7.3		-48.8		0.1		-41.4
	Balances at September 27, 2013			$	-128.1	$	-26	$	-0.5	$	-154.6
	These accumulated other comprehensive income components are included in the computation of net periodic pension costs, which were recorded in “Cost of revenues” and “General and administrative expenses” in our Condensed Consolidated Statements of Operations. See Note 13, “Employee Retirement and Post-Retirement Benefit Plans,” for more information.
	This accumulated other comprehensive income component is reclassified into “Cost of revenues” in our Condensed Consolidated Statements of Operations.

CONDENSED_CONSOLIDATING_FINANC

CONDENSED CONSOLIDATING FINANCIAL INFORMATION	9 Months Ended
	Sep. 27, 2013
Notes to Financial Statements [Abstract]	'
CONDENSED CONSOLIDATING FINANCIAL INFORMATION	'
	NOTE 18. CONDENSED CONSOLIDATING FINANCIAL INFORMATION
	On March 15, 2012, URS Corporation, the parent company (“Parent”), and URS Fox US LP (“Fox LP”), a 100% owned subsidiary of the Parent, issued the Senior Notes. See Note 10, “Indebtedness,” for more information. The Senior Notes are our general unsecured senior obligations and rank equally with our other existing and future unsecured senior indebtedness.  The Senior Notes are fully and unconditionally guaranteed (the “Guarantees”) on a joint-and-several basis by each of the Parent's current and future domestic subsidiaries that are guarantors under our 2011 Credit Facility or that are 100% owned domestic obligors or 100% owned domestic guarantors, individually or collectively, under any future indebtedness of our subsidiaries in excess of $100.0 million (the “Guarantors”).  The Guarantees are the Guarantors' unsecured senior obligations and rank equally with the Guarantors' other existing and future unsecured senior indebtedness.
	The Guarantee of a Guarantor will, so long as no event of default shall have occurred and be continuing with respect to the Senior Notes, be automatically and unconditionally released and discharged without any action on the part of the trustee or the holders of the Senior Notes:
	with respect to a Guarantor which, individually or together with the Parent's other domestic subsidiaries, no longer has any indebtedness of borrowed money in excess of $100.0 million outstanding and no longer guarantees, individually or together with the Parent's other domestic subsidiaries, any indebtedness in excess of $100.0 million incurred by the Parent or any of the Parent's other 100% owned domestic subsidiaries;
	unless the Guarantor is the surviving entity (i) upon the sale, lease or exchange of all or substantially all of the Guarantor's assets to any person or entity not an affiliate of the Parent or (ii) upon any sale, exchange or transfer, to any person or entity not an affiliate of the Parent, of all of the Parent's direct and indirect interest in such Guarantor;
	upon the full and final payment and performance of all obligations under the indenture and the Senior Notes;
	upon liquidation and dissolution of a Guarantor in a transaction that is not prohibited by the indenture; or
	upon legal defeasance, covenant defeasance or satisfaction and discharge of the indenture.
	In addition, the Guarantee of any domestic subsidiary that is a Guarantor will be automatically and unconditionally released and discharged, without any further action required by such Guarantor, the trustee, or the holders of the Senior Notes, if at any time such domestic subsidiary of the Parent that is a Guarantor is no longer a domestic subsidiary of the Parent.
	We have early adopted Accounting Standards Update (ASU) 2013-04 – Obligations Resulting from Joint and Several Liability Arrangements For Which the Total Amount of the Obligation Is Fixed at the Reporting Date. The update requires companies to measure obligations resulting from joint and several liability arrangements for which the total amount of the obligation is fixed at the reporting date. The total amount of the obligation is the sum of the amount the reporting entity agreed to pay on the basis of its arrangement among its co-obligors and any additional amount the reporting entity expects to pay on behalf of its co-obligor.
	Consistent with the arrangement between Parent and Fox LP, $300.4 million and $699.6 million of the Senior Notes are included in the liabilities of Parent and Fox LP, respectively, as of both September 27, 2013 and December 28, 2012.
	Restatement and Revisions of Previously Issued Condensed Consolidating Financial Information
	Subsequent to initially filing the condensed consolidating financial information, immaterial errors described below were discovered, which impacted the previously presented condensed consolidating financial information. These immaterial errors are referred to in the table below as Revision Adjustments. The Revision Adjustments impacting the Condensed Consolidating Balance Sheet as of December 28, 2012 included:
	An adjustment relating to intercompany receivables and intercompany payables.
	Misclassifications of intercompany receivable/payable activities and misclassification of intercompany notes between short-term and long-term.
	A misclassification of an elimination entry that should have been recorded within the non-guarantor column instead of the cross-elimination column.
	We assessed the materiality of all of these errors in accordance with the SEC's Staff Accounting Bulletin 99 and concluded that the previously issued consolidated financial statements were not materially misstated. In accordance with the SEC's Staff Accounting Bulletin 108, we have corrected these immaterial errors by revising the previously issued condensed consolidating financial information included in this footnote.
	In connection with the restatement described in Note 1, “Business, Basis of Presentation, and Accounting Policies,” above, we have restated the Condensed Consolidating Balance Sheet as of December 28, 2012. The effect of these restatements, referred to below as Restatement Adjustments, was an increase to goodwill, deferred tax liabilities and URS stockholders' equity.
	The following table presents the effects of the Restatement Adjustments and Revision Adjustments on the Condensed Consolidating Balance Sheet as of December 28, 2012.
									As of December 28, 2012
	(in millions)								Issuer Parent		Issuer Fox LP		Guarantors		Non- Guarantors		Eliminations		Consolidated
	Condensed Consolidating Balance Sheet Data:
	As Reported
	ASSETS
	Current assets:
		Cash and cash equivalents							$	14.4	$	—	$	16.3	$	285.4	$	-1.6	$	314.5
		Accounts receivable, including retentions								—		—		771.2		811.8		-28.2		1,554.80
		Costs and accrued earnings in excess of billings on contracts								—		—		876.9		515.7		-8.3		1,384.30
		Less receivable allowances								—		—		-29.1		-40.6		—		-69.7
			Net accounts receivable							—		—		1,619.00		1,286.90		-36.5		2,869.40
		Intercompany accounts receivable								1,765.80		22.4		4,248.90		1,530.60		-7,567.70		—
		Deferred tax assets								6.8		—		60.3		0.5		—		67.6
		Inventory								—		—		5.5		56		—		61.5
		Other current assets								38.2		—		65.5		111.3		-10.8		204.2
					Total current assets					1,825.20		22.4		6,015.50		3,270.70		-7,616.60		3,517.20
	Investments in and advances to subsidiaries and unconsolidated joint ventures									5,400.50		20.7		1,812.00		258.9		-7,213.80		278.3
	Property and equipment at cost, net									26.9		—		159.7		500.9		—		687.5
	Intangible assets, net									0.2		—		223.5		468.5		—		692.2
	Goodwill									—		—		1,778.70		1,468.40		—		3,247.10
	Other long-term assets									22.4		—		231.3		115.3		-4.8		364.2
								Total assets	$	7,275.20	$	43.1	$	10,220.70	$	6,082.70	$	-14,835.20	$	8,786.50
	LIABILITIES AND EQUITY
	Current liabilities:
		Current portion of long-term debt							$	18.9	$	—	$	10	$	42.9	$	—	$	71.8
		Accounts payable and subcontractors payable, including retentions								4.1		—		382.8		454.8		-38.2		803.5
		Accrued salaries and employee benefits								41.1		—		362.6		155.1		—		558.8
		Billings in excess of costs and accrued earnings on contracts								—		—		146.4		143		-0.3		289.1
		Intercompany accounts payable								3,138.30		14.7		3,109.10		1,305.60		-7,567.70		—
		Short-term intercompany notes payable								14.3		—		20		599.2		-633.5		—
		Other current liabilities								59.4		8.6		146.3		74		-10.5		277.8
					Total current liabilities					3,276.10		23.3		4,177.20		2,774.60		-8,250.20		2,001.00
	Long-term debt									952.2		699.6		16.9		323.8		—		1,992.50
	Deferred tax liabilities									—		—		247.6		85.5		-4.8		328.3
	Self-insurance reserves									—		—		18.3		111.5		—		129.8
	Pension and post-retirement benefit obligations									—		—		185.4		115.5		—		300.9
	Long-term intercompany notes payable									—		—		561.7		687.8		-1,249.50		—
	Other long-term liabilities									2.9		—		197		71.1		—		271
							Total liabilities			4,231.20		722.9		5,404.10		4,169.80		-9,504.50		5,023.50
	URS stockholders' equity									3,621.10		8		5,400.40		1,805.30		-7,213.70		3,621.10
	Intercompany notes receivable									-577.1		-687.8		-583.8		-34.3		1,883.00		—
					Total URS stockholders' equity					3,044.00		-679.8		4,816.60		1,771.00		-5,330.70		3,621.10
	Noncontrolling interests									—		—		—		141.9		—		141.9
							Total stockholders' equity			3,044.00		-679.8		4,816.60		1,912.90		-5,330.70		3,763.00
							Total liabilities and stockholders' equity	$	7,275.20	$	43.1	$	10,220.70	$	6,082.70	$	-14,835.20	$	8,786.50
								As of December 28, 2012
(in millions)								Issuer Parent		Issuer Fox LP		Guarantors		Non- Guarantors		Eliminations		Consolidated
Restatement Adjustments
ASSETS
Investments in and advances to subsidiaries and unconsolidated joint ventures								$	422.9	$	—	$	224.1	$	—	$	-647	$	—
Goodwill								$	—	$	—	$	250.4	$	224.1	$	—	$	474.5
Total assets								$	422.9	$	—	$	474.5	$	224.1	$	-647	$	474.5
LIABILITIES AND EQUITY
Deferred tax liabilities								$	—	$	—	$	51.6	$	—	$	—	$	51.6
Total liabilities								$	—	$	—	$	51.6	$	—	$	—	$	51.6
URS stockholders' equity								$	422.9	$	—	$	422.9	$	224.1	$	-647	$	422.9
Total URS stockholders' equity								$	422.9	$	—	$	422.9	$	224.1	$	-647	$	422.9
Total stockholders' equity								$	422.9	$	—	$	422.9	$	224.1	$	-647	$	422.9
Total liabilities and stockholders' equity								$	422.9	$	—	$	474.5	$	224.1	$	-647	$	474.5
								As of December 28, 2012
(in millions)								Issuer Parent		Issuer Fox LP		Guarantors		Non- Guarantors		Eliminations		Consolidated
Revision Adjustments
ASSETS
Current assets:
	Accounts receivable, including retentions								—		—		0.1		—		-0.1		—
		Net accounts receivable							—		—		0.1		—		-0.1		—
	Intercompany accounts receivable								27.4		—		-315.8		-261.6		550		—
				Total current assets					27.4		—		-315.7		-261.6		549.9		—
Investments in and advances to subsidiaries and unconsolidated joint ventures									0.1		—		0.2		-16.7		16.4		—
Intangible assets, net									—		—		-0.2		0.2		—		—
Other long-term assets									-0.1		—		—		-0.2		0.3		—
							Total assets	$	27.4	$	—	$	-315.7	$	-278.3	$	566.6	$	—
LIABILITIES AND EQUITY
Current liabilities:
	Accounts payable and subcontractors payable, including retentions								0.1		—		-0.1		—		—		—
	Accrued salaries and employee benefits								-0.1		—		0.1		—		—		—
	Billings in excess of costs and accrued earnings on contracts								—		—		-0.1		—		0.1		—
	Intercompany accounts payable								27.4		—		-315.7		-261.7		550		—
	Short-term intercompany notes payable								—		—		—		-577.6		577.6		—
	Other current liabilities								0.1		—		-0.1		4		-4		—
				Total current liabilities					27.5		—		-315.9		-835.3		1,123.70		—
Deferred tax liabilities									—		—		-0.1		0.1		—		—
Long-term intercompany notes payable									—		—		—		577.6		-577.6		—
Other long-term liabilities									-0.1		—		0.1		—		—		—
						Total liabilities			27.4		—		-315.9		-257.6		546.1		—
URS stockholders' equity									0		—		0.2		-20.7		20.5		—
				Total URS stockholders' equity					—		—		0.2		-20.7		20.5		—
						Total stockholders' equity			—		—		0.2		-20.7		20.5		—
							Total liabilities and stockholders' equity	$	27.4	$	—	$	-315.7	$	-278.3	$	566.6	$	—
								As of December 28, 2012
(in millions)								Issuer Parent		Issuer Fox LP		Guarantors		Non- Guarantors		Eliminations		Consolidated
As Restated
ASSETS
Current assets:
	Cash and cash equivalents							$	14.4	$	—	$	16.3	$	285.4	$	-1.6	$	314.5
	Accounts receivable, including retentions								—		—		771.3		811.8		-28.3		1,554.80
	Costs and accrued earnings in excess of billings on contracts								—		—		876.9		515.7		-8.3		1,384.30
	Less receivable allowances								—		—		-29.1		-40.6		—		-69.7
		Net accounts receivable							—		—		1,619.10		1,286.90		-36.6		2,869.40
	Intercompany accounts receivable								1,793.20		22.4		3,933.10		1,269.00		-7,017.70		—
	Deferred tax assets								6.8		—		60.3		0.5		—		67.6
	Inventory								—		—		5.5		56		—		61.5
	Other current assets								38.2		—		65.5		111.3		-10.8		204.2
				Total current assets					1,852.60		22.4		5,699.80		3,009.10		-7,066.70		3,517.20
Investments in and advances to subsidiaries and unconsolidated joint ventures									5,823.50		20.7		2,036.30		242.2		-7,844.40		278.3
Property and equipment at cost, net									26.9		—		159.7		500.9		—		687.5
Intangible assets, net									0.2		—		223.3		468.7		—		692.2
Goodwill									—		—		2,029.10		1,692.50		—		3,721.60
Other long-term assets									22.3		—		231.3		115.1		-4.5		364.2
							Total assets	$	7,725.50	$	43.1	$	10,379.50	$	6,028.50	$	-14,915.60	$	9,261.00
LIABILITIES AND EQUITY
Current liabilities:
	Current portion of long-term debt							$	18.9	$	—	$	10	$	42.9	$	—	$	71.8
	Accounts payable and subcontractors payable, including retentions								4.2		—		382.7		454.8		-38.2		803.5
	Accrued salaries and employee benefits								41		—		362.7		155.1		—		558.8
	Billings in excess of costs and accrued earnings on contracts								—		—		146.3		143		-0.2		289.1
	Intercompany accounts payable								3,165.70		14.7		2,793.40		1,043.90		-7,017.70		—
	Short-term intercompany notes payable								14.3		—		20		21.6		-55.9		—
	Other current liabilities								59.5		8.6		146.2		78		-14.5		277.8
				Total current liabilities					3,303.60		23.3		3,861.30		1,939.30		-7,126.50		2,001.00
Long-term debt									952.2		699.6		16.9		323.8		—		1,992.50
Deferred tax liabilities									—		—		299.1		85.6		-4.8		379.9
Self-insurance reserves									—		—		18.3		111.5		—		129.8
Pension and post-retirement benefit obligations									—		—		185.4		115.5		—		300.9
Long-term intercompany notes payable									—		—		561.7		1,265.40		-1,827.10		—
Other long-term liabilities									2.8		—		197.1		71.1		—		271
						Total liabilities			4,258.60		722.9		5,139.80		3,912.20		-8,958.40		5,075.10
URS stockholders' equity									4,044.00		8		5,823.50		2,008.70		-7,840.20		4,044.00
Intercompany notes receivable									-577.1		-687.8		-583.8		-34.3		1,883.00		—
				Total URS stockholders' equity					3,466.90		-679.8		5,239.70		1,974.40		-5,957.20		4,044.00
Noncontrolling interests									—		—		—		141.9		—		141.9
						Total stockholders' equity			3,466.90		-679.8		5,239.70		2,116.30		-5,957.20		4,185.90
							Total liabilities and stockholders' equity	$	7,725.50	$	43.1	$	10,379.50	$	6,028.50	$	-14,915.60	$	9,261.00
The following is our condensed consolidating financial information, segregating the issuers, guarantor subsidiaries and non-guarantor subsidiaries, as of September 27, 2013 and December 28, 2012, and for the three and nine months ended September 27, 2013 and September 28, 2012.
								CONDENSED CONSOLIDATING BALANCE SHEET – UNAUDITED
								As of September 27, 2013
(in millions)								Issuer Parent		Issuer Fox LP		Guarantors		Non- Guarantors		Eliminations		Consolidated
ASSETS
Current assets:
	Cash and cash equivalents							$	115.1	$	—	$	20.1	$	220.3	$	-41.3	$	314.2
	Accounts receivable, including retentions								—		—		819.9		659.7		-14.8		1,464.80
	Costs and accrued earnings in excess of billings on contracts								—		—		823.6		644.1		-8		1,459.70
	Less receivable allowances								—		—		-29.2		-33.9		—		-63.1
		Net accounts receivable							—		—		1,614.30		1,269.90		-22.8		2,861.40
	Intercompany accounts receivable								783.2		16.7		2,822.80		588.4		-4,211.10		—
	Deferred tax assets								6.7		—		44.6		—		-4.8		46.5
	Inventory								—		—		0.5		53.2		—		53.7
	Other current assets								45.7		—		71.4		111.6		-1.5		227.2
				Total current assets					950.7		16.7		4,573.70		2,243.40		-4,281.50		3,503.00
Investments in and advances to subsidiaries and unconsolidated joint ventures									5,996.20		43.9		1,965.50		205		-7,957.80		252.8
Property and equipment at cost, net									29.5		—		158.9		442.7		—		631.1
Intangible assets, net									0.2		—		196.6		407.3		—		604.1
Goodwill									—		—		2,029.10		1,673.90		0.3		3,703.30
Other long-term assets									22.7		—		296.9		83.9		-7.5		396
							Total assets	$	6,999.30	$	60.6	$	9,220.70	$	5,056.20	$	-12,246.50	$	9,090.30
LIABILITIES AND EQUITY
Current liabilities:
	Current portion of long-term debt							$	44	$	—	$	9.6	$	38.6	$	—	$	92.2
	Accounts payable and subcontractors payable, including retentions								3.7		—		403.5		358.5		-68.2		697.5
	Accrued salaries and employee benefits								32.4		—		355.7		168		—		556.1
	Billings in excess of costs and accrued earnings on contracts								—		—		118.8		106.3		—		225.1
	Intercompany accounts payable								2,370.70		—		1,480.70		359.7		-4,211.10		0
	Short-term intercompany notes payable								14.3		—		20.5		21.6		-56.4		—
	Other current liabilities								68.5		17.9		124		61.8		-14.9		257.3
				Total current liabilities					2,533.60		17.9		2,512.80		1,114.50		-4,350.60		1,828.20
Long-term debt									915.5		699.6		17.1		270.8		—		1,903.00
Deferred tax liabilities									—		—		329.5		76.8		-7		399.3
Self-insurance reserves									—		—		9.4		122.6		—		132
Pension and post-retirement benefit obligations									—		—		169		109.5		—		278.5
Long-term intercompany notes payable									—		—		561.1		1,269.80		-1,830.90		—
Other long-term liabilities									3.2		—		228.2		46		—		277.4
						Total liabilities			3,452.30		717.5		3,827.10		3,010.00		-6,188.50		4,818.40
URS stockholders' equity									4,123.50		16.5		5,996.20		1,932.60		-7,945.30		4,123.50
Intercompany notes receivable									-576.5		-673.4		-602.6		-34.8		1,887.30		—
				Total URS stockholders' equity					3,547.00		-656.9		5,393.60		1,897.80		-6,058.00		4,123.50
Noncontrolling interests									—		—		—		148.4		—		148.4
						Total stockholders' equity			3,547.00		-656.9		5,393.60		2,046.20		-6,058.00		4,271.90
							Total liabilities and stockholders' equity	$	6,999.30	$	60.6	$	9,220.70	$	5,056.20	$	-12,246.50	$	9,090.30
								CONDENSED CONSOLIDATING BALANCE SHEET - As Revised and Restated
								As of December 28, 2012
(in millions)								Issuer Parent		Issuer Fox LP		Guarantors		Non- Guarantors		Eliminations		Consolidated
ASSETS
Current assets:
	Cash and cash equivalents							$	14.4	$	—	$	16.3	$	285.4	$	-1.6	$	314.5
	Accounts receivable, including retentions								—		—		771.3		811.8		-28.3		1,554.80
	Costs and accrued earnings in excess of billings on contracts								—		—		876.9		515.7		-8.3		1,384.30
	Less receivable allowances								—		—		-29.1		-40.6		—		-69.7
		Net accounts receivable							—		—		1,619.10		1,286.90		-36.6		2,869.40
	Intercompany accounts receivable								1,793.20		22.4		3,933.10		1,269.00		-7,017.70		—
	Deferred tax assets								6.8		—		60.3		0.5		—		67.6
	Inventory								—		—		5.5		56		—		61.5
	Other current assets								38.2		—		65.5		111.3		-10.8		204.2
				Total current assets					1,852.60		22.4		5,699.80		3,009.10		-7,066.70		3,517.20
Investments in and advances to subsidiaries and unconsolidated joint ventures									5,823.50		20.7		2,036.30		242.2		-7,844.40		278.3
Property and equipment at cost, net									26.9		—		159.7		500.9		—		687.5
Intangible assets, net									0.2		—		223.3		468.7		—		692.2
Goodwill									—		—		2,029.10		1,692.50		—		3,721.60
Other long-term assets									22.3		—		231.3		115.1		-4.5		364.2
							Total assets	$	7,725.50	$	43.1	$	10,379.50	$	6,028.50	$	-14,915.60	$	9,261.00
LIABILITIES AND EQUITY
Current liabilities:
	Current portion of long-term debt							$	18.9	$	—	$	10	$	42.9	$	—	$	71.8
	Accounts payable and subcontractors payable, including retentions								4.2		—		382.7		454.8		-38.2		803.5
	Accrued salaries and employee benefits								41		—		362.7		155.1		—		558.8
	Billings in excess of costs and accrued earnings on contracts								—		—		146.3		143		-0.2		289.1
	Intercompany accounts payable								3,165.70		14.7		2,793.40		1,043.90		-7,017.70		—
	Short-term intercompany notes payable								14.3		—		20		21.6		-55.9		—
	Other current liabilities								59.5		8.6		146.2		78		-14.5		277.8
				Total current liabilities					3,303.60		23.3		3,861.30		1,939.30		-7,126.50		2,001.00
Long-term debt									952.2		699.6		16.9		323.8		—		1,992.50
Deferred tax liabilities									—		—		299.1		85.6		-4.8		379.9
Self-insurance reserves									—		—		18.3		111.5		—		129.8
Pension and post-retirement benefit obligations									—		—		185.4		115.5		—		300.9
Long-term intercompany notes payable									—		—		561.7		1,265.40		-1,827.10		—
Other long-term liabilities									2.8		—		197.1		71.1		—		271
						Total liabilities			4,258.60		722.9		5,139.80		3,912.20		-8,958.40		5,075.10
URS stockholders' equity									4,044.00		8		5,823.50		2,008.70		-7,840.20		4,044.00
Intercompany notes receivable									-577.1		-687.8		-583.8		-34.3		1,883.00		—
				Total URS stockholders' equity					3,466.90		-679.8		5,239.70		1,974.40		-5,957.20		4,044.00
Noncontrolling interests									—		—		—		141.9		—		141.9
						Total stockholders' equity			3,466.90		-679.8		5,239.70		2,116.30		-5,957.20		4,185.90
							Total liabilities and stockholders' equity	$	7,725.50	$	43.1	$	10,379.50	$	6,028.50	$	-14,915.60	$	9,261.00
								CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS – UNAUDITED
								For the Three Months Ended September 27, 2013
(in millions)								Issuer Parent		Issuer Fox LP		Guarantors		Non- Guarantors		Eliminations		Consolidated
Revenues								$	—	$	—	$	1,634.80	$	1,185.10	$	-84.4	$	2,735.50
Cost of revenues									—		—		-1,532.10		-1,111.30		84.4		-2,559.00
General and administrative expenses									-15.4		—		—		1.1		—		-14.3
Equity in income (loss) in subsidiaries									77.5		7.7		46.2		-5.5		-125.9		—
Equity in income of unconsolidated joint ventures									—		—		0.8		16.3		—		17.1
Intercompany royalty and general and administrative charges									39.3		—		-35.1		-4.2		—		—
			Operating income (loss)						101.4		7.7		114.6		81.5		-125.9		179.3
Interest expense									-8.5		-9.7		-0.2		-4.8		—		-23.2
Intercompany interest income									2.5		1		9.2		0.4		-13.1		—
Intercompany interest expense									-0.3		—		-2.7		-10.1		13.1		—
Other income (expenses)									—		—		—		1.6		—		1.6
			Income (loss) before income taxes						95.1		-1		120.9		68.6		-125.9		157.7
Income tax benefit (expense)									-6.3		3.2		-43.4		4.2		—		-42.3
			Net income (loss) including noncontrolling interests						88.8		2.2		77.5		72.8		-125.9		115.4
Noncontrolling interests in income of consolidated subsidiaries									—		—		—		-26.6		—		-26.6
					Net income (loss) attributable to URS			$	88.8	$	2.2	$	77.5	$	46.2	$	-125.9	$	88.8
					Comprehensive income (loss) attributable to URS			$	116.8	$	2.2	$	107.1	$	71.9	$	-181.2	$	116.8
								CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS – UNAUDITED
								For the Three Months Ended September 28, 2012
(in millions)								Issuer Parent		Issuer Fox LP		Guarantors		Non- Guarantors		Eliminations		Consolidated
Revenues								$	—	$	—	$	1,680.80	$	1,354.70	$	-87.9	$	2,947.60
Cost of revenues									—		—		-1,561.40		-1,279.80		87.9		-2,753.30
General and administrative expenses									-22.8		—		—		0.2		—		-22.6
Acquisition-related expenses									0.8		—		—		—		—		0.8
Equity in income (loss) in subsidiaries									109.2		8.5		72.3		3.6		-193.6		—
Equity in income of unconsolidated joint ventures									—		—		10.6		20.5		—		31.1
Intercompany royalty and general and administrative charges									35.4		—		-32.9		-2.5		—		—
			Operating income (loss)						122.6		8.5		169.4		96.7		-193.6		203.6
Interest expense									-21.7		4.7		0.1		-3.6		—		-20.5
Intercompany interest income									2.5		1.1		8.4		-0.2		-11.8		—
Intercompany interest expense									-0.3		—		-2.2		-9.3		11.8		—
Other income (expenses)									—		—		—		10.8		—		10.8
			Income (loss) before income taxes						103.1		14.3		175.7		94.4		-193.6		193.9
Income tax benefit (expense)									3.6		-2.2		-66.5		-1		—		-66.1
			Net income (loss) including noncontrolling interests						106.7		12.1		109.2		93.4		-193.6		127.8
Noncontrolling interests in income of consolidated subsidiaries									—		—		—		-21.1		—		-21.1
					Net income (loss) attributable to URS			$	106.7	$	12.1	$	109.2	$	72.3	$	-193.6	$	106.7
					Comprehensive income (loss) attributable to URS			$	167	$	12.1	$	171.8	$	141.4	$	-325.3	$	167
								CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS – UNAUDITED
								For the Nine Months Ended September 27, 2013
(In millions)								Issuer Parent		Issuer Fox LP		Guarantors		Non- Guarantors		Eliminations		Consolidated
Revenues								$	—	$	—	$	4,961.80	$	3,620.20	$	-252	$	8,330.00
Cost of revenues									—		—		-4,616.90		-3,487.00		252		-7,851.90
General and administrative expense									-61.4		—		—		1.5		—		-59.9
Equity in income (loss) in subsidiaries									209.7		23.1		55.2		-14.8		-273.2		—
Equity in income of unconsolidated joint ventures									—		—		5.5		53.6		—		59.1
Intercompany royalty and general and administrative charges									108		—		-93.8		-14.2		—		—
			Operating income (loss)						256.3		23.1		311.8		159.3		-273.2		477.3
Interest expense									-24.4		-26.4		-0.6		-14.4		—		-65.8
Intercompany interest income									7.4		2.8		27.1		1.1		-38.4		—
Intercompany interest expense									-0.8		—		-7.7		-29.9		38.4		—
Other income (expense)									—		—		—		-4.2		—		-4.2
			Income (loss) before income taxes						238.5		-0.5		330.6		111.9		-273.2		407.3
Income tax benefit (expense)									-10.5		8.8		-120.9		-0.8		—		-123.4
			Net income (loss) including noncontrolling interests						228		8.3		209.7		111.1		-273.2		283.9
Noncontrolling interests in income of consolidated subsidiaries									—		—		—		-55.9		—		-55.9
					Net income (loss) attributable to URS			$	228	$	8.3	$	209.7	$	55.2	$	-273.2	$	228
					Comprehensive income (loss) attributable to URS			$	186.6	$	8.3	$	173.7	$	5.2	$	-187.2	$	186.6
								CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS – UNAUDITED
								For the Nine Months Ended September 28, 2012
(In millions)								Issuer Parent		Issuer Fox LP		Guarantors		Non- Guarantors		Eliminations		Consolidated
Revenues								$	—	$	—	$	5,124.00	$	3,170.70	$	-294.9	$	7,999.80
Cost of revenues									—		—		-4,770.90		-3,008.00		294.9		-7,484.00
General and administrative expense									-61.3		—		—		-0.7		—		-62
Acquisition-related expense									-7.4		—		—		-8.7		—		-16.1
Equity in income (loss) in subsidiaries									240.4		12.9		103.4		1		-357.7		—
Equity in income of unconsolidated joint ventures									—		—		17		59.8		—		76.8
Intercompany royalty and general and administrative charges									108.5		—		-98.9		-9.6		—		—
			Operating income (loss)						280.2		12.9		374.6		204.5		-357.7		514.5
Interest expense									-44.1		—		-0.4		-6.5		—		-51
Intercompany interest income									5.1		1.6		12.9		1.6		-21.2		—
Intercompany interest expense									-1.1		—		-4.6		-15.5		21.2		—
Other income (expense)									-0.3		—		—		4.4		—		4.1
			Income (loss) before income taxes						239.8		14.5		382.5		188.5		-357.7		467.6
Income tax benefit (expense)									0.2		-0.6		-142.1		-12.7		—		-155.2
			Net income (loss) including noncontrolling interests						240		13.9		240.4		175.8		-357.7		312.4
Noncontrolling interests in income of consolidated subsidiaries									—		—		—		-72.4		—		-72.4
					Net income (loss) attributable to URS			$	240	$	13.9	$	240.4	$	103.4	$	-357.7	$	240
					Comprehensive income (loss) attributable to URS			$	289.1	$	13.9	$	294.4	$	163.9	$	-472.2	$	289.1
								CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS – UNAUDITED
								For the Nine Months Ended September 27, 2013
(in millions)								Issuer Parent		Issuer Fox LP		Guarantors		Non- Guarantors		Eliminations		Consolidated
Net cash from operating activities								$	-75.6	$	-6.3	$	379.7	$	101.8	$	-41.3	$	358.3
Cash flows from investing activities:
	Proceeds from disposal of property and equipment								—		—		1.4		31.2		—		32.6
	Investments in unconsolidated joint ventures								—		—		-0.1		—		—		-0.1
	Changes in restricted cash								—		—		—		4.6		—		4.6
	Capital expenditures, less equipment purchased through capital leases and equipment notes								-6.2		—		-23.3		-38.7		—		-68.2
	Receipts from intercompany notes receivable								—		15.3		—		—		-15.3		—
	Other intercompany investing activities								549.4		-9		676.7		369.6		-1,586.70		—
Net cash from investing activities									543.2		6.3		654.7		366.7		-1,602.00		-31.1
Cash flows from financing activities:
	Payments on long-term debt								—		—		-3.3		-0.3		—		-3.6
	Borrowings from revolving line of credit								871		—		—		58.4		—		929.4
	Payments on revolving line of credit								-871		—		—		-116.2		—		-987.2
	Net borrowings (payments) under foreign lines of credit and short-term notes								-16.1		—		-0.1		-4.9		—		-21.1
	Net change in overdrafts								—		—		-50.7		-6		1.6		-55.1
	Payments on capital lease obligations								-0.6		—		-3.5		-9.8		—		-13.9
	Excess tax benefits from stock-based compensation								1.6		—		—		—		—		1.6
	Proceeds from employee stock purchases and exercises of stock options								14.6		—		—		—		—		14.6
	Distributions to noncontrolling interests								—		—		—		-49.2		—		-49.2
	Dividends paid								-46.8		—		—		—		—		-46.8
	Repurchases of common stock								-93.3		—		—		—		—		-93.3
	Intercompany notes repayments								—		—		—		-15.3		15.3		—
	Other intercompany financing activities								-226.3		—		-973		-387.4		1,586.70		—
Net cash from financing activities									-366.9		—		-1,030.60		-530.7		1,603.60		-324.6
Net change in cash and cash equivalents									100.7		—		3.8		-62.2		-39.7		2.6
Effect of foreign exchange rate changes on cash and cash equivalents									—		—		—		-2.9		—		-2.9
Cash and cash equivalents at beginning of period									14.4		—		16.3		285.4		-1.6		314.5
Cash and cash equivalents at end of period								$	115.1	$	—	$	20.1	$	220.3	$	-41.3	$	314.2
								CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS – UNAUDITED
								For the Nine Months Ended September 28, 2012
(in millions)								Issuer Parent		Issuer Fox LP		Guarantors		Non- Guarantors		Eliminations		Consolidated
Net cash from operating activities								$	51.7	$	-0.6	$	55.4	$	165.1	$	27.5	$	299.1
Cash flows from investing activities:
	Payments for business acquisitions, net of cash acquired								—		—		—		-1,345.70		—		-1,345.70
	Proceeds from disposal of property and equipment								—		—		1.4		15.8		—		17.2
	Payments in settlement of foreign currency forward contracts								-1,260.60		—		—		—		—		-1,260.60
	Receipts in settlement of foreign currency forward contracts								1,260.30		—		—		—		—		1,260.30
	Investments in unconsolidated joint ventures								—		—		-4.3		-1.1		—		-5.4
	Changes in restricted cash								—		—		—		3.8		—		3.8
	Capital expenditures, less equipment purchased through capital leases and equipment notes								-8.4		—		-30		-63.4		—		-101.8
	Dividends received								—		—		0.1		—		-0.1		—
	Investments in intercompany notes receivable								-555		-800		-555		—		1,910.00		—
	Receipts from intercompany notes receivable								97.8		—		—		30		-127.8		—
	Other intercompany investing activities								-670.3		0.6		73		171.3		425.4		—
Net cash from investing activities									-1,136.20		-799.4		-514.8		-1,189.30		2,207.50		-1,432.20
Cash flows from financing activities:
	Borrowings from long-term debt								198.9		800		—		—		—		998.9
	Payments on long-term debt								—		—		-4.3		-0.1		—		-4.4
	Borrowings from revolving line of credit								560		—		—		—		—		560
	Payments on revolving line of credit								-433.6		—		—		—		—		-433.6
	Net payments under foreign lines of credit and short-term notes								-0.6		—		-0.1		-12		—		-12.7
	Net change in overdrafts								75.7		—		-0.7		4.8		-75.7		4.1
	Payments on capital lease obligations								-0.6		—		-3.7		-5.8		—		-10.1
	Payments of debt issuance costs								-8.8		—		—		—		—		-8.8
	Proceeds from employee stock purchases and exercises of stock options								7.7		—		—		—		—		7.7
	Distributions to noncontrolling interests								—		—		—		-51.9		—		-51.9
	Contributions and advances from noncontrolling interests								—		—		0.1		2.2		—		2.3
	Dividends paid								-29.8		—		—		-0.1		0.1		-29.8
	Repurchases of common stock								-40		—		—		—		—		-40
	Intercompany notes borrowings								—		—		555		1,355.00		-1,910.00		—
	Intercompany notes repayments								-30		—		—		-97.8		127.8		—
	Other intercompany financing activities								743.4		—		-95.1		-222.9		-425.4		—
Net cash from financing activities									1,042.30		800		451.2		971.4		-2,283.20		981.7
Net change in cash and cash equivalents									-42.2		0		-8.2		-52.8		-48.2		-151.4
Effect of foreign exchange rate changes on cash and cash equivalents									—		—		—		4.6		—		4.6
Cash and cash equivalents at beginning of period									193.8		—		24.4		294.5		-76.7		436
Cash and cash equivalents at end of period								$	151.6	$	0	$	16.2	$	246.3	$	-124.9	$	289.2

INCOME_TAXES

INCOME TAXES	9 Months Ended
	Sep. 27, 2013
Notes to Financial Statements [Abstract]	'
INCOME TAXES	'
	NOTE ##NTAX. INCOME TAXES
	The increase in the effective income tax rate for the three and nine months ended September 27, 2013 compared with the comparable periods in 2012 is primarily due to the non-deductibility of the goodwill impairment charge taken in 2012.

BUSINESS_BASIS_OF_PRESENTATION1

BUSINESS, BASIS OF PRESENTATION, AND ACCOUNTING POLICIES (POLICIES)	9 Months Ended
	Sep. 27, 2013
Accounting Policies [Abstract]	'
Reclassifications	'
	Reclassifications
	We made reclassifications to the prior year's financial statements to conform them to the current period's presentation. These reclassifications have no effect on our consolidated net cash flows or consolidated net income.
Cash and Cash Equivalents	'
	Cash and Cash Equivalents
	Cash and cash equivalents include all highly liquid investments with maturities of 90 days or less at the date of purchase and include interest-bearing bank deposits and money market funds. At September 27, 2013 and December 28, 2012, our restricted cash balances were $12.5 million and $17.1 million, respectively. These amounts were included in “Other current assets” on our Condensed Consolidated Balance Sheets. For cash held by our consolidated joint ventures, see Note 6, “Joint Ventures.”
Use of and Changes in Estimates	'
	Use of and Changes in Estimates
	Our business activities involve making significant estimates and assumptions in the normal course of business relating to our contracts. We focus on evaluating the performance of contracts individually.  These estimates and assumptions can vary in the normal course of business as contracts progress, when estimated productivity assumptions change based on experience to-date and as uncertainties are resolved. We use the cumulative catch-up method applicable to construction contract accounting to account for revisions in estimates. During the nine months ended September 27, 2013, our results of operations included the recognition of $27.8 million of performance-based incentive fees from our work managing chemical demilitarization programs due to good project performance that occurred during the period.  These changes in estimates resulted in increases of $27.8 million in operating income, $16.7 million in net income and $0.22 in diluted earnings per common share (“diluted EPS”) for the nine months ended September 27, 2013. There were no material changes in estimates for the three months ended September 27, 2013.
	During the nine months ended September 28, 2012, our results of operations included the recognition of a $40.0 million programmatic schedule incentive fee achieved when multiple chemical demilitarization contracts each met their milestones during the period. This change in estimate resulted in increases of $40.0 million in operating income, $24.0 million in net income, and $0.32 in diluted EPS for the nine months ended September 28, 2012.  There were no material changes in estimates for the three months ended September 28, 2012.

BUSINESS_BASIS_OF_PRESENTATION2

BUSINESS, BASIS OF PRESENTATION AND ACCOUNTING POLICIES (TABLES)	9 Months Ended
	Sep. 27, 2013
Revision of Previously Issued Financial Statements [Abstract]	'
Revision of Previously Issued Financial Statements [Table Text Block]	'
						As Reported			Adjustment			As Restated
		(In millions)
		Consolidated Balance Sheet Data:
		Balance as of December 28, 2012
		Goodwill				$	3,247.10		$	474.5		$	3,721.60
		Total assets				$	8,786.50		$	474.5		$	9,261.00
		Deferred tax liabilities				$	328.3		$	51.6		$	379.9
		Total liabilities				$	5,023.50		$	51.6		$	5,075.10
		Retained earnings				$	1,224.40		$	422.9		$	1,647.30
		Total URS stockholders' equity				$	3,621.10		$	422.9		$	4,044.00
		Total stockholders' equity				$	3,763.00		$	422.9		$	4,185.90
		Total liabilities and stockholders' equity				$	8,786.50		$	474.5		$	9,261.00
		Consolidated Statement of Changes in Stockholders' Equity Data:
		Balance as of December 30, 2011
		Retained earnings				$	975.2		$	422.9		$	1,398.10
		Total URS stockholders' equity				$	3,377.20		$	422.9		$	3,800.10
		Total equity				$	3,484.40		$	422.9		$	3,907.30
		Balance as of September 28, 2012
		Retained earnings				$	1,169.20		$	422.9		$	1,592.10
		Total URS stockholders' equity				$	3,605.10		$	422.9		$	4,028.00
		Total equity				$	3,738.10		$	422.9		$	4,161.00
		Balance as of December 28, 2012
		Retained earnings				$	1,224.40		$	422.9		$	1,647.30
		Total URS stockholders' equity				$	3,621.10		$	422.9		$	4,044.00
		Total equity				$	3,763.00		$	422.9		$	4,185.90
								As of December 28, 2012
	(in millions)							Issuer Parent			Issuer Fox LP			Guarantors		Non- Guarantors		Eliminations		Consolidated
	Condensed Consolidating Balance Sheet Data:
	As Reported
	ASSETS
	Current assets:
		Cash and cash equivalents						$	14.4		$	—		$	16.3	$	285.4	$	-1.6	$	314.5
		Accounts receivable, including retentions							—			—			771.2		811.8		-28.2		1,554.80
		Costs and accrued earnings in excess of billings on contracts							—			—			876.9		515.7		-8.3		1,384.30
		Less receivable allowances							—			—			-29.1		-40.6		—		-69.7
			Net accounts receivable						—			—			1,619.00		1,286.90		-36.5		2,869.40
		Intercompany accounts receivable							1,765.80			22.4			4,248.90		1,530.60		-7,567.70		—
		Deferred tax assets							6.8			—			60.3		0.5		—		67.6
		Inventory							—			—			5.5		56		—		61.5
		Other current assets							38.2			—			65.5		111.3		-10.8		204.2
				Total current assets					1,825.20			22.4			6,015.50		3,270.70		-7,616.60		3,517.20
	Investments in and advances to subsidiaries and unconsolidated joint ventures								5,400.50			20.7			1,812.00		258.9		-7,213.80		278.3
	Property and equipment at cost, net								26.9			—			159.7		500.9		—		687.5
	Intangible assets, net								0.2			—			223.5		468.5		—		692.2
	Goodwill								—			—			1,778.70		1,468.40		—		3,247.10
	Other long-term assets								22.4			—			231.3		115.3		-4.8		364.2
						Total assets		$	7,275.20		$	43.1		$	10,220.70	$	6,082.70	$	-14,835.20	$	8,786.50
	LIABILITIES AND EQUITY
	Current liabilities:
		Current portion of long-term debt						$	18.9		$	—		$	10	$	42.9	$	—	$	71.8
		Accounts payable and subcontractors payable, including retentions							4.1			—			382.8		454.8		-38.2		803.5
		Accrued salaries and employee benefits							41.1			—			362.6		155.1		—		558.8
		Billings in excess of costs and accrued earnings on contracts							—			—			146.4		143		-0.3		289.1
		Intercompany accounts payable							3,138.30			14.7			3,109.10		1,305.60		-7,567.70		—
		Short-term intercompany notes payable							14.3			—			20		599.2		-633.5		—
		Other current liabilities							59.4			8.6			146.3		74		-10.5		277.8
				Total current liabilities					3,276.10			23.3			4,177.20		2,774.60		-8,250.20		2,001.00
	Long-term debt								952.2			699.6			16.9		323.8		—		1,992.50
	Deferred tax liabilities								—			—			247.6		85.5		-4.8		328.3
	Self-insurance reserves								—			—			18.3		111.5		—		129.8
	Pension and post-retirement benefit obligations								—			—			185.4		115.5		—		300.9
	Long-term intercompany notes payable								—			—			561.7		687.8		-1,249.50		—
	Other long-term liabilities								2.9			—			197		71.1		—		271
				Total liabilities				4,231.20			722.9			5,404.10		4,169.80		-9,504.50		5,023.50
URS stockholders' equity								3,621.10			8			5,400.40		1,805.30		-7,213.70		3,621.10
Intercompany notes receivable								-577.1			-687.8			-583.8		-34.3		1,883.00		—
			Total URS stockholders' equity					3,044.00			-679.8			4,816.60		1,771.00		-5,330.70		3,621.10
Noncontrolling interests								—			—			—		141.9		—		141.9
				Total stockholders' equity				3,044.00			-679.8			4,816.60		1,912.90		-5,330.70		3,763.00
					Total liabilities and stockholders' equity		$	7,275.20		$	43.1		$	10,220.70	$	6,082.70	$	-14,835.20	$	8,786.50
							As of December 28, 2012
(in millions)							Issuer Parent			Issuer Fox LP			Guarantors		Non- Guarantors		Eliminations		Consolidated
Restatement Adjustments
ASSETS
Investments in and advances to subsidiaries and unconsolidated joint ventures							$	422.9		$	—		$	224.1	$	—	$	-647	$	—
Goodwill							$	—		$	—		$	250.4	$	224.1	$	—	$	474.5
Total assets							$	422.9		$	—		$	474.5	$	224.1	$	-647	$	474.5
LIABILITIES AND EQUITY
Deferred tax liabilities							$	—		$	—		$	51.6	$	—	$	—	$	51.6
Total liabilities							$	—		$	—		$	51.6	$	—	$	—	$	51.6
URS stockholders' equity							$	422.9		$	—		$	422.9	$	224.1	$	-647	$	422.9
Total URS stockholders' equity							$	422.9		$	—		$	422.9	$	224.1	$	-647	$	422.9
Total stockholders' equity							$	422.9		$	—		$	422.9	$	224.1	$	-647	$	422.9
Total liabilities and stockholders' equity							$	422.9		$	—		$	474.5	$	224.1	$	-647	$	474.5
							As of December 28, 2012
(in millions)							Issuer Parent			Issuer Fox LP			Guarantors		Non- Guarantors		Eliminations		Consolidated
Revision Adjustments
ASSETS
Current assets:
	Accounts receivable, including retentions							—			—			0.1		—		-0.1		—
		Net accounts receivable						—			—			0.1		—		-0.1		—
	Intercompany accounts receivable							27.4			—			-315.8		-261.6		550		—
			Total current assets					27.4			—			-315.7		-261.6		549.9		—
Investments in and advances to subsidiaries and unconsolidated joint ventures								0.1			—			0.2		-16.7		16.4		—
Intangible assets, net								—			—			-0.2		0.2		—		—
Other long-term assets								-0.1			—			—		-0.2		0.3		—
					Total assets		$	27.4		$	—		$	-315.7	$	-278.3	$	566.6	$	—
LIABILITIES AND EQUITY
Current liabilities:
	Accounts payable and subcontractors payable, including retentions							0.1			—			-0.1		—		—		—
	Accrued salaries and employee benefits							-0.1			—			0.1		—		—		—
	Billings in excess of costs and accrued earnings on contracts							—			—			-0.1		—		0.1		—
	Intercompany accounts payable							27.4			—			-315.7		-261.7		550		—
	Short-term intercompany notes payable							—			—			—		-577.6		577.6		—
	Other current liabilities							0.1			—			-0.1		4		-4		—
			Total current liabilities					27.5			—			-315.9		-835.3		1,123.70		—
Deferred tax liabilities								—			—			-0.1		0.1		—		—
Long-term intercompany notes payable								—			—			—		577.6		-577.6		—
Other long-term liabilities								-0.1			—			0.1		—		—		—
				Total liabilities				27.4			—			-315.9		-257.6		546.1		—
URS stockholders' equity								0			—			0.2		-20.7		20.5		—
			Total URS stockholders' equity					—			—			0.2		-20.7		20.5		—
				Total stockholders' equity				—			—			0.2		-20.7		20.5		—
					Total liabilities and stockholders' equity		$	27.4		$	—		$	-315.7	$	-278.3	$	566.6	$	—
							As of December 28, 2012
(in millions)							Issuer Parent			Issuer Fox LP			Guarantors		Non- Guarantors		Eliminations		Consolidated
As Restated
ASSETS
Current assets:
	Cash and cash equivalents						$	14.4		$	—		$	16.3	$	285.4	$	-1.6	$	314.5
	Accounts receivable, including retentions							—			—			771.3		811.8		-28.3		1,554.80
	Costs and accrued earnings in excess of billings on contracts							—			—			876.9		515.7		-8.3		1,384.30
	Less receivable allowances							—			—			-29.1		-40.6		—		-69.7
		Net accounts receivable						—			—			1,619.10		1,286.90		-36.6		2,869.40
	Intercompany accounts receivable							1,793.20			22.4			3,933.10		1,269.00		-7,017.70		—
	Deferred tax assets							6.8			—			60.3		0.5		—		67.6
	Inventory							—			—			5.5		56		—		61.5
	Other current assets							38.2			—			65.5		111.3		-10.8		204.2
			Total current assets					1,852.60			22.4			5,699.80		3,009.10		-7,066.70		3,517.20
Investments in and advances to subsidiaries and unconsolidated joint ventures								5,823.50			20.7			2,036.30		242.2		-7,844.40		278.3
Property and equipment at cost, net								26.9			—			159.7		500.9		—		687.5
Intangible assets, net								0.2			—			223.3		468.7		—		692.2
Goodwill								—			—			2,029.10		1,692.50		—		3,721.60
Other long-term assets								22.3			—			231.3		115.1		-4.5		364.2
					Total assets		$	7,725.50		$	43.1		$	10,379.50	$	6,028.50	$	-14,915.60	$	9,261.00
LIABILITIES AND EQUITY
Current liabilities:
	Current portion of long-term debt						$	18.9		$	—		$	10	$	42.9	$	—	$	71.8
	Accounts payable and subcontractors payable, including retentions							4.2			—			382.7		454.8		-38.2		803.5
	Accrued salaries and employee benefits							41			—			362.7		155.1		—		558.8
	Billings in excess of costs and accrued earnings on contracts							—			—			146.3		143		-0.2		289.1
	Intercompany accounts payable							3,165.70			14.7			2,793.40		1,043.90		-7,017.70		—
	Short-term intercompany notes payable							14.3			—			20		21.6		-55.9		—
	Other current liabilities							59.5			8.6			146.2		78		-14.5		277.8
			Total current liabilities					3,303.60			23.3			3,861.30		1,939.30		-7,126.50		2,001.00
Long-term debt								952.2			699.6			16.9		323.8		—		1,992.50
Deferred tax liabilities								—			—			299.1		85.6		-4.8		379.9
Self-insurance reserves								—			—			18.3		111.5		—		129.8
Pension and post-retirement benefit obligations								—			—			185.4		115.5		—		300.9
Long-term intercompany notes payable								—			—			561.7		1,265.40		-1,827.10		—
Other long-term liabilities								2.8			—			197.1		71.1		—		271
				Total liabilities				4,258.60			722.9			5,139.80		3,912.20		-8,958.40		5,075.10
URS stockholders' equity								4,044.00			8			5,823.50		2,008.70		-7,840.20		4,044.00
Intercompany notes receivable								-577.1			-687.8			-583.8		-34.3		1,883.00		—
			Total URS stockholders' equity					3,466.90			-679.8			5,239.70		1,974.40		-5,957.20		4,044.00
Noncontrolling interests								—			—			—		141.9		—		141.9
				Total stockholders' equity				3,466.90			-679.8			5,239.70		2,116.30		-5,957.20		4,185.90
					Total liabilities and stockholders' equity		$	7,725.50		$	43.1		$	10,379.50	$	6,028.50	$	-14,915.60	$	9,261.00

EARNINGS_PER_SHARE_TABLES

EARNINGS PER SHARE (TABLES)	9 Months Ended
	Sep. 27, 2013
Earnings per share reconciliation [Abstract]	'
Earnings per share [Table Text Block]	'
				Three Months Ended			Nine Months Ended
				September 27,		September 28,	September 27,	September 28,
		(In millions)		2013		2012	2013	2012
		Weighted-average shares of common stock outstanding (1)		73.6		74.5	73.9	74.2
		Effect of dilutive stock options, restricted stock awards and units and employee stock purchase plan shares		0.3		0.1	0.4	0.3
		Weighted-average shares of common stock outstanding – Diluted		73.9		74.6	74.3	74.5
	Weighted-average shares of common stock outstanding is net of treasury stock.
Earnings per share, anti-dilutive awards [Table Text Block]	'
			September 27,		September 28,
		(In millions)	2013		2012
		Anti-dilutive equity awards not included above	—	†	1.1
	†       Represents less than half a million shares.

ACCOUNTS_RECEIVABLE_AND_COSTS_1

ACCOUNTS RECEIVABLE AND COSTS AND ACCRUED EARNINGS IN EXCESS OF BILLINGS ON CONTRACTS (TABLES)	9 Months Ended
	Sep. 27, 2013
Accounts receivable and costs and accrued earnings in excess of billings on contracts [Abstract]	'
Accounts receivable and costs and accrued earnings in excess of billings on contracts [Table Text Block]	'
					September 27,		December 28,
		(In millions)			2013		2012
		Accounts receivable:
			U.S. federal government		$	408	$	376.2
			Others			1,056.80		1,178.60
				Total accounts receivable	$	1,464.80	$	1,554.80
		Unbilled Accounts Receivable:
			U.S. federal government		$	863.8	$	892.7
			Others			910.7		756.5
				Total		1,774.50		1,649.20
				Less: Amounts included in Other long-term assets		-314.8		-264.9
				Unbilled Accounts Receivable	$	1,459.70	$	1,384.30

INVENTORY_TABLES

INVENTORY (TABLES)	9 Months Ended
	Sep. 27, 2013
Inventory [Abstract]	'
Inventory [Table Text Block]	'
				September 27,		December 28,
		(In millions)		2013		2012
		Raw materials		$	9.8	$	14.2
		Work in progress			5.8		9.8
		Finished goods			26.9		24.9
		Supplies			11.2		12.6
			Total	$	53.7	$	61.5

JOINT_VENTURES_TABLES

JOINT VENTURES (TABLES)	9 Months Ended
	Sep. 27, 2013
Consolidated Joint Ventures [Abstract]	'
Schedule of consolidated joint ventures [Table Text Block]	'
						September 27,		December 28,
		(In millions)				2013		2012
		Cash and cash equivalents				$	88	$	80.1
		Net accounts receivable					275.6		282.2
		Other current assets					2.6		2.9
		Noncurrent assets					120.6		143.3
					Total assets	$	486.8	$	508.5
		Accounts and subcontractors payable				$	119.7	$	185
		Billings in excess of costs and accrued earnings on contracts					26.5		8.7
		Accrued expenses and other					54.5		40
		Noncurrent liabilities					11		22.7
			Total liabilities				211.7		256.4
		Total URS equity					126.7		110.2
		Noncontrolling interests					148.4		141.9
			Total owners’ equity				275.1		252.1
					Total liabilities and owners’ equity	$	486.8	$	508.5
Unconsolidated Joint Ventures [Abstract]	'
Schedule of unconsolidated joint ventures [Table Text Block]	'
			Unconsolidated
		(In millions)	VIEs
		27-Sep-13
		Current assets	$	681.8
		Noncurrent assets	$	35.3
		Current liabilities	$	463.6
		Noncurrent liabilities	$	10.3
		28-Dec-12
		Current assets	$	594.1
		Noncurrent assets	$	23.8
		Current liabilities	$	372.5
		Noncurrent liabilities	$	7.8
		Three months ended September 27, 2013 (1)
		Revenues	$	480.9
		Cost of revenues	$	-429.8
		Income from continuing operations before tax	$	51.1
		Net income	$	47.4
		Three months ended September 28, 2012 (1)
		Revenues	$	477
		Cost of revenues	$	-412.5
		Income from continuing operations before tax	$	64.5
		Net income	$	62
		Nine months ended September 27, 2013 (1)
		Revenues	$	1,592.80
		Cost of revenues	$	-1,423.50
		Income from continuing operations before tax	$	169.3
		Net income	$	157.1
		Nine months ended September 28, 2012 (1)
		Revenues	$	1,221.70
		Cost of revenues	$	-1,044.60
		Income from continuing operations before tax	$	177.1
		Net income	$	166
	Income from unconsolidated U.S. joint ventures is generally not taxable in most tax jurisdictions in the U.S. The tax expenses on our other unconsolidated joint ventures are primarily related to foreign taxes.

PROPERTY_AND_EQUIPMENT_TABLES

PROPERTY AND EQUIPMENT (TABLES)	9 Months Ended
	Sep. 27, 2013
Property plant and equipment [Abstract]	'
Property and equipment [Table Text Block]	'
				September 27,		December 28,
		(In millions)		2013		2012
		Construction and mining equipment		$	250.4	$	266.4
		Computer software			242.1		219.5
		Computer hardware			217.1		198.2
		Vehicles and automotive equipment			174.5		172.2
		Leasehold improvements			141.5		130.1
		Land and buildings			102		114.1
		Furniture and fixtures			92.8		97.7
		Other equipment			76.3		72.4
		Construction in progress			5		15.6
					1,301.70		1,286.20
		Accumulated depreciation and amortization			-670.6		-598.7
			Property and equipment, net (1)	$	631.1	$	687.5
	The unamortized computer software costs were $78.4 million and $71.1 million, respectively, as of September 27, 2013 and December 28, 2012.

ACQUISITION_TABLES

ACQUISITION (TABLES)	9 Months Ended
	Sep. 27, 2013
Business acquisition, pro forma information [Abstract]	'
Business acquisition, pro forma information [Table Text Block]	'
				Pro Forma
				Nine Months
		Unaudited		Ended
		(In millions, except per share data)		28-Sep-12
		Revenues		$	8,813.30
		Net income (loss) including noncontrolling interests		$	306.9
		Net income (loss) attributable to URS		$	234
		Earnings (loss) per share:
			Basic EPS	$	3.15
			Diluted EPS	$	3.14
Business acquisition, pro forma nonrecurring adjustments [Table Text Block]	'
				Pro Forma
		Pre-tax, nonrecurring adjustment (In millions)		Nine Months Ended
					28-Sep-12
		Acquisition-related expenses		$	27.7

GOODWILL_TABLES

GOODWILL (TABLES)	9 Months Ended
	Sep. 27, 2013
Goodwill and intangible assets disclosure [Abstract]	'
Changes in goodwill allocated to reportable segments [Table Text Block]	'
	(in millions)				Goodwill Balance as of September 27, 2013		Reporting Unit Fair Value		Reporting Unit Carrying Value		Percent Above Carrying Value
	Infrastructure & Environment Operating Segment				$	761	$	2,220.00	$	1,509.30		47.10%
	Federal Services Operating Segment					707.3		1,515.00		1,011.60		49.80%
	Within the Energy & Construction Operating Segment:
		Global Management and Operations Services Group				565.4		1,375.00		925.3		48.60%
		Civil Construction & Mining Group				293.9		474		363		30.60%
		Industrial/Process Group				189.3		336		239		40.60%
		Power Group				735.1		923		823.9		12.00%
			Total Energy & Construction Operating Segment			1,783.70		3,108.00		2,351.20		32.20%
	Oil & Gas Operating Segment					451.3		1,619.00		1,366.60		18.50%
				Total	$	3,703.30	$	8,462.00	$	6,238.70		35.60%

INDEBTEDNESS_TABLES

INDEBTEDNESS (TABLES)	9 Months Ended
	Sep. 27, 2013
Debt disclosure [Abstract]	'
Schedule of debt [Table Text Block]	'
				September 27,		December 28,
		(In millions)		2013		2012
		Term loan, net of debt issuance costs		$	652.1	$	666.3
		3.85% Senior Notes (net of discount)			399.6		399.5
		5.00% Senior Notes (net of discount)			599.5		599.5
		7.50% Canadian Notes (including premium)			193.8		203.8
		Revolving line of credit			38.8		100.5
		Other indebtedness			111.4		94.7
			Total indebtedness		1,995.20		2,064.30
		Less:
		Current portion of long-term debt			92.2		71.8
			Long-term debt	$	1,903.00	$	1,992.50

BILLINGS_IN_EXCESS_OF_COSTS_AN1

BILLINGS IN EXCESS OF COSTS AND ACCRUED EARNINGS ON CONTRACTS (TABLES)	9 Months Ended
	Sep. 27, 2013
Components Of Billings In Excess Of Cost And Accrued Earnings On Contracts [Abstract]	'
Billings in excess of costs and accrued earnings on contracts [Table Text Block]	'
				September 27,		December 28,
		(In millions)		2013		2012
		Billings in excess of costs and accrued earnings on contracts		$	182.1	$	211.7
		Project-related legal liabilities and other project-related reserves			31.7		55.2
		Advance payments negotiated as a contract condition			5.6		9.8
		Normal profit liabilities			0.9		4.8
		Estimated losses on uncompleted contracts			4.8		7.6
			Total	$	225.1	$	289.1

EMPLOYEE_RETIREMENT_AND_POSTRE1

EMPLOYEE RETIREMENT AND POST-RETIREMENT BENEFIT PLANS (TABLES)	9 Months Ended
	Sep. 27, 2013
Defined benefit pension plans, defined contribution plans, and defined benefit postretirement plans disclosure [Abstract]	'
Schedule of net periodic pension costs and other comprehensive income [Table Text Block]	'
				Three Months Ended
				Domestic Plans				Foreign Plans
				September 27,		September 28,		September 27,		September 28,
	(In millions)			2013		2012		2013		2012
	Service cost			$	2.2	$	2	$	0.1	$	0.1
	Interest cost				4.4		4.7		5.7		5.7
	Expected return on plan assets				-4.8		-4.4		-6		-5.6
	Amortization of:
		Prior service costs			-0.1		-0.7		—		—
		Net loss			3.9		2.4		—		—
			Net periodic pension costs	$	5.6	$	4	$	-0.2	$	0.2
				Nine Months Ended
				Domestic Plans				Foreign Plans
				September 27,		September 28,		September 27,		September 28,
	(In millions)			2013		2012		2013		2012
	Service cost			$	6.6	$	6	$	0.3	$	0.3
	Interest cost				13.2		14.1		17.1		16.9
	Expected return on plan assets				-14.4		-13.2		-18		-16.6
	Amortization of:
		Prior service costs			-0.3		-2.1		—		—
		Net loss			11.7		7.2		—		—
			Net periodic pension costs	$	16.8	$	12	$	-0.6	$	0.6
Schedule of post-retirement benefit plans disclosures [Table Text Block]	'
				Three Months Ended				Nine Months Ended
				September 27,		September 28,		September 27,		September 28,
	(In millions)			2013		2012		2013		2012
	Interest cost			$	0.4	$	0.5	$	1.2	$	1.5
	Expected return on plan assets				-0.1		-0.1		-0.3		-0.3
	Amortization of:
		Net loss			0.1		—		0.3		—
			Net periodic benefit costs	$	0.4	$	0.4	$	1.2	$	1.2

STOCKHOLDERS_EQUITY_TABLES

STOCKHOLDERS' EQUITY (TABLES)	9 Months Ended
	Sep. 27, 2013
Stockholders' equity (Tables) [Abstract]	'
Dividends [Table Text Block]	'
	Declaration Date		Dividend Per Share			Record Date			Total Maximum Payment			Payment Date
	(In millions, except per share data)
	24-Feb-12		$	0.2			16-Mar-12		$	15.2			6-Apr-12
	4-May-12		$	0.2			15-Jun-12		$	15.4			6-Jul-12
	3-Aug-12		$	0.2			14-Sep-12		$	15.4			5-Oct-12
	2-Nov-12		$	0.2			14-Dec-12		$	15.4			4-Jan-13
	22-Feb-13		$	0.21			15-Mar-13		$	16			5-Apr-13
	3-May-13		$	0.21			14-Jun-13		$	16			5-Jul-13
	2-Aug-13		$	0.21			13-Sep-13		$	16			4-Oct-13
	1-Nov-13		$	0.21			13-Dec-13			NA			10-Jan-14
	NA =ot available
	Declaration Date		Dividend Per Share			Record Date			Total Maximum Payment			Payment Date
	(In millions, except per share data)
	24-Feb-12		$	0.2			16-Mar-12		$	15.2			6-Apr-12
	4-May-12		$	0.2			15-Jun-12		$	15.4			6-Jul-12
	3-Aug-12		$	0.2			14-Sep-12		$	15.4			5-Oct-12
	2-Nov-12		$	0.2			14-Dec-12		$	15.4			4-Jan-13
	22-Feb-13		$	0.21			15-Mar-13		$	16			5-Apr-13
	3-May-13		$	0.21			14-Jun-13		$	16			5-Jul-13
	2-Aug-13		$	0.21			13-Sep-13		$	16			4-Oct-13
	1-Nov-13		$	0.21			13-Dec-13			NA			10-Jan-14
Schedule of treasury stock by class [Table Text Block]	'
				Three Months Ended						Nine Months Ended
		(In millions, except average price paid		September 27,			September 28,			September 27,			September 28,
		per share)		2013			2012			2013			2012
		Common stock repurchase shares			—			—			2			1
		Average price paid per share		$	—		$	—		$	45.55		$	40
		Cost of common stock repurchased		$	—		$	—		$	93.3		$	40
Stock-based compensation expenses [Table Text Block]	'
							Three Months Ended						Nine Months Ended
							September 27,			September 28,			September 27,		September 28,
	(In millions)						2013			2012			2013		2012
	Stock-based compensation expense:
			Restricted stock awards and units				$	12.8		$	11		$	35.2	$	32.1
			Employee stock purchase plan					0.2			0.1			0.5		0.4
					Stock-based compensation expense		$	13		$	11.1		$	35.7	$	32.5
	Stock-based compensation expense included in:
			Cost of revenues				$	9.7		$	8.6		$	26.6	$	24.8
			General and administrative expenses					3.3			2.5			9.1		7.7
					Stock-based compensation expense		$	13		$	11.1		$	35.7	$	32.5

SEGMENT_AND_RELATED_INFORMATIO1

SEGMENT AND RELATED INFORMATION (TABLES)	9 Months Ended
	Sep. 27, 2013
Segment reporting [Abstract]	'
Segment reporting, disclosure of entity's reportable segments [Table Text Block]	'
						Three Months Ended						Nine Months Ended
						September 27,			September 28,			September 27,			September 28,
	(In millions)					2013			2012			2013			2012
	Revenues
	Infrastructure & Environment					$	922.3		$	920.7		$	2,833.20		$	2,851.10
	Federal Services						538.9			682.8			1,776.30			2,118.10
	Energy & Construction						775.5			781.5			2,168.70			2,285.10
	Oil & Gas (1)						532.6			592.2			1,672.30			869.7
	Inter-segment, eliminations and other						-33.8			-29.6			-120.5			-124.2
			Total revenues			$	2,735.50		$	2,947.60		$	8,330.00		$	7,999.80
	Equity in income (loss) of unconsolidated joint ventures
	Infrastructure & Environment					$	-0.9		$	3.3		$	0.1		$	3.1
	Federal Services						1.4			1.5			4.7			4.8
	Energy & Construction						17.6			24.1			54.2			66
	Oil & Gas (1)						-1			2.2			0.1			2.9
			Total equity in income of unconsolidated joint ventures			$	17.1		$	31.1		$	59.1		$	76.8
	URS operating income (loss) (2)
	Infrastructure & Environment					$	58.5		$	66.5		$	160.7		$	174.1
	Federal Services						57.6			64.8			225.3			217.5
	Energy & Construction						31.5			43.7			65.8			96.2
	Oil & Gas (1)						19.4			29.3			29.5			32.4
	Corporate (3)						-14.3			-21.8			-59.9			-78.1
			Total URS operating income (loss)			$	152.7		$	182.5		$	421.4		$	442.1
	Operating income (loss)
	Infrastructure & Environment					$	59.3		$	67.1		$	162.1		$	175.7
	Federal Services						57.6			64.8			225.3			217.5
	Energy & Construction						57.4			64.6			121.1			167.5
	Oil & Gas (1)						19.3			28.9			28.7			31.9
	Corporate (3)						-14.3			-21.8			-59.9			-78.1
			Total operating income (loss)			$	179.3		$	203.6		$	477.3		$	514.5
	Depreciation and amortization
	Infrastructure & Environment					$	12.4		$	13.1		$	37.3		$	41.8
	Federal Services						8.7			8.5			26.8			27.2
	Energy & Construction						10.6			13			33.9			36.8
	Oil & Gas (1)						29			36.2			92.1			54.9
	Corporate						2.2			1.7			6.4			4.8
			Total depreciation and amortization			$	62.9		$	72.5		$	196.5		$	165.5
	The operating results of Flint have been included in our consolidated results since the acquisition on May 14, 2012.
	We are providing information regarding URS operating income (loss) by segment because management uses this information to assess performance and make decisions about resource allocation. URS operating income is defined as segment operating income after reductions for pre-tax noncontrolling interests.
	Corporate includes expenses related to corporate functions and acquisition-related expenses.
Reconciliation of other significant reconciling items from segments to consolidated [Table Text Block]	'
						Three Months Ended September 27, 2013
						Infrastructure						Energy			Oil
						&			Federal			&			&
	(In millions)					Environment			Services			Construction			Gas		Corporate		Consolidated
	URS operating income (loss)					$	58.5		$	57.6		$	31.5		$	19.4	$	-14.3	$	152.7
	Noncontrolling interests						0.8			—			25.9			-0.1		—		26.6
				Operating income (loss)		$	59.3		$	57.6		$	57.4		$	19.3	$	-14.3	$	179.3
						Three Months Ended September 28, 2012
						Infrastructure						Energy			Oil
						&			Federal			&			&
	(In millions)					Environment			Services			Construction			Gas		Corporate		Consolidated
	URS operating income (loss)					$	66.5		$	64.8		$	43.7		$	29.3	$	-21.8	$	182.5
	Noncontrolling interests						0.6			—			20.9			-0.4		—		21.1
				Operating income (loss)		$	67.1		$	64.8		$	64.6		$	28.9	$	-21.8	$	203.6
						Nine Months Ended September 27, 2013
						Infrastructure						Energy			Oil
						&			Federal			&			&
	(In millions)					Environment			Services			Construction			Gas		Corporate		Consolidated
	URS operating income (loss)					$	160.7		$	225.3		$	65.8		$	29.5	$	-59.9	$	421.4
	Noncontrolling interests						1.4			—			55.3			-0.8		—		55.9
				Operating income (loss)		$	162.1		$	225.3		$	121.1		$	28.7	$	-59.9	$	477.3
						Nine Months Ended September 28, 2012
						Infrastructure						Energy			Oil
						&			Federal			&			&
	(In millions)					Environment			Services			Construction			Gas		Corporate		Consolidated
	URS operating income (loss)					$	174.1		$	217.5		$	96.2		$	32.4	$	-78.1	$	442.1
	Noncontrolling interests						1.6			—			71.3			-0.5		—		72.4
				Operating income (loss)		$	175.7		$	217.5		$	167.5		$	31.9	$	-78.1	$	514.5
Schedule of investments in and advances to unconsolidated joint ventures and property and equipment, net of accumulated depreciation by segment [Table Text Block]	'
							September 27,			December 28,
		(In millions)					2013			2012
		Infrastructure & Environment					$	7.2		$	8.1
		Federal Services						3.4			5.7
		Energy & Construction						112.1			124.5
		Oil & Gas						130.1			140
				Total investments in and advances to unconsolidated joint ventures			$	252.8		$	278.3
		Infrastructure & Environment					$	138.4		$	141
		Federal Services						39			36.6
		Energy & Construction						58.3			60.1
		Oil & Gas						365.9			422.9
		Corporate						29.5			26.9
				Total property and equipment, net of accumulated depreciation			$	631.1		$	687.5
Reconciliation of assets from segment to consolidated [Table Text Block]	'
						September 27,			December 28,
		(In millions)				2013			2012(1)
		Infrastructure & Environment				$	2,174.20		$	2,267.60
		Federal Services					1,552.40			1,642.80
		Energy & Construction					3,272.90			3,253.90
		Oil & Gas					1,783.30			1,904.40
		Corporate					307.5			192.3
				Total assets		$	9,090.30		$	9,261.00
	Total assets by segments for the year ended December 28, 2012 were restated to correct an error related to prior year goodwill impairment charges. See Note 1, “Business, Basis of Presentation, and Accounting Policies.”
Revenues from major customers [Table Text Block]	'
					Three Months Ended						Nine Months Ended
					September 27,			September 28,			September 27,			September 28,
	(In millions, except percentages)				2013			2012			2013			2012
	The U.S. Army (1)
			Infrastructure & Environment		$	28.4		$	7		$	93		$	94.4
			Federal Services			244.4			347			886.6			1,094.50
			Energy & Construction			45.7			36.4			98.9			86.9
	Total U.S. Army				$	318.5		$	390.4		$	1,078.50		$	1,275.80
	Revenues from the U.S. Army as a percentage of our consolidated revenues					12%			13%			13%			16%
	DOE
			Infrastructure & Environment		$	1		$	1		$	3.1		$	4.4
			Federal Services			4.6			4.1			15			17.2
			Energy & Construction			231.4			248.6			643.4			741.8
	Total DOE				$	237		$	253.7		$	661.5		$	763.4
	Revenues from DOE as a percentage of our consolidated revenues					9%			9%			8%			10%
	Revenues from the federal market sector as a percentage of our consolidated revenues					34%			37%			35%			43%
	The U.S. Army includes U.S. Army Corps of Engineers.

RECLASSIFICATIONS_OUT_OF_ACCUM1

RECLASSIFICATIONS OUT OF ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (TABLES)	9 Months Ended
	Sep. 27, 2013
Reclassifications Out Of Accumulated Other Comprehensive Income (Loss) [Abstract]	'
Reclassifications out of accumulated other comprehensive income (loss) [Table Text Block]	'
	(In millions)			Pension and Post-retirement Related Adjustments		Foreign Currency Translation Adjustments		Loss on Derivative Instruments		Accumulated Other Comprehensive Income (Loss)
	Balances at June 29, 2012			$	-106.7	$	-14.6	$	-0.7	$	-122
		Other comprehensive income before reclassification			—		59.1		—		59.1
		Amounts reclassified from accumulated other comprehensive income:
			Prior service costs, net of tax (1)		-0.5		—		—		-0.5
			Actuarial (gains) losses, net of tax (1)		1.6		—		—		1.6
			Translation adjustment realized upon liquidation of foreign subsidiaries, net of tax (2)		—		0.1		—		0.1
		Net current-period other comprehensive income			1.1		59.2		—		60.3
	Balances at September 28, 2012			$	-105.6	$	44.6	$	-0.7	$	-61.7
	(In millions)			Pension and Post-retirement Related Adjustments		Foreign Currency Translation Adjustments		Loss on Derivative Instruments		Accumulated Other Comprehensive Income (Loss)
	Balances at June 28, 2013			$	-129.3	$	-52.7	$	-0.6	$	-182.6
		Other comprehensive income before reclassification			-1.1		26.6		—		25.5
		Amounts reclassified from accumulated other comprehensive income:
			Reclassification adjustment of prior derivative settlement, net of tax		—		—		0.1		0.1
			Prior service costs, net of tax (1)		-0.1		—		—		-0.1
			Actuarial (gains) losses, net of tax (1)		2.4		—		—		2.4
			Translation adjustment realized upon liquidation of foreign subsidiaries, net of tax (2)		—		0.1		—		0.1
		Net current-period other comprehensive income			1.2		26.7		0.1		28
	Balances at September 27, 2013			$	-128.1	$	-26	$	-0.5	$	-154.6
	(In millions)			Pension and Post-retirement Related Adjustments		Foreign Currency Translation Adjustments		Loss on Derivative Instruments		Accumulated Other Comprehensive Income (Loss)
	Balances at December 30, 2011			$	-108.8	$	-2	$	—	$	-110.8
		Other comprehensive income before reclassification			0.1		46.2		-0.7		45.6
		Amounts reclassified from accumulated other comprehensive income:
			Prior service costs, net of tax (1)		-1.3		—		—		-1.3
			Actuarial (gains) losses, net of tax (1)		4.4		—		—		4.4
			Translation adjustment realized upon liquidation of foreign subsidiaries, net of tax (2)		—		0.4		—		0.4
		Net current-period other comprehensive income			3.2		46.6		-0.7		49.1
	Balances at September 28, 2012			$	-105.6	$	44.6	$	-0.7	$	-61.7
	(In millions)			Pension and Post-retirement Related Adjustments		Foreign Currency Translation Adjustments		Loss on Derivative Instruments		Accumulated Other Comprehensive Income (Loss)
	Balances at December 28, 2012			$	-135.4	$	22.8	$	-0.6	$	-113.2
		Other comprehensive income before reclassification			0.3		-48.4		—		-48.1
		Amounts reclassified from accumulated other comprehensive income:
			Reclassification adjustment of prior derivative settlement, net of tax		—		—		0.1		0.1
			Prior service costs, net of tax (1)		-0.2		—		—		-0.2
			Actuarial (gains) losses, net of tax (1)		7.2		—		—		7.2
			Translation adjustment realized upon liquidation of foreign subsidiaries, net of tax (2)		—		-0.4		—		-0.4
		Net current-period other comprehensive income			7.3		-48.8		0.1		-41.4
	Balances at September 27, 2013			$	-128.1	$	-26	$	-0.5	$	-154.6
	These accumulated other comprehensive income components are included in the computation of net periodic pension costs, which were recorded in “Cost of revenues” and “General and administrative expenses” in our Condensed Consolidated Statements of Operations. See Note 13, “Employee Retirement and Post-Retirement Benefit Plans,” for more information.
	This accumulated other comprehensive income component is reclassified into “Cost of revenues” in our Condensed Consolidated Statements of Operations.

CONDENSED_CONSOLIDATING_FINANC1

CONDENSED CONSOLIDATING FINANCIAL INFORMATION (TABLES)	9 Months Ended
	Sep. 27, 2013
Condensed financial information of parent company only disclosure [Abstract]	'
Schedule of condensed balance sheet [Table Text Block]	'
										CONDENSED CONSOLIDATING BALANCE SHEET – UNAUDITED
										As of September 27, 2013
	(in millions)									Issuer Parent			Issuer Fox LP			Guarantors		Non- Guarantors		Eliminations		Consolidated
	ASSETS
	Current assets:
		Cash and cash equivalents								$	115.1		$	—		$	20.1	$	220.3	$	-41.3	$	314.2
		Accounts receivable, including retentions									—			—			819.9		659.7		-14.8		1,464.80
		Costs and accrued earnings in excess of billings on contracts									—			—			823.6		644.1		-8		1,459.70
		Less receivable allowances									—			—			-29.2		-33.9		—		-63.1
			Net accounts receivable								—			—			1,614.30		1,269.90		-22.8		2,861.40
		Intercompany accounts receivable									783.2			16.7			2,822.80		588.4		-4,211.10		—
		Deferred tax assets									6.7			—			44.6		—		-4.8		46.5
		Inventory									—			—			0.5		53.2		—		53.7
		Other current assets									45.7			—			71.4		111.6		-1.5		227.2
					Total current assets						950.7			16.7			4,573.70		2,243.40		-4,281.50		3,503.00
	Investments in and advances to subsidiaries and unconsolidated joint ventures										5,996.20			43.9			1,965.50		205		-7,957.80		252.8
	Property and equipment at cost, net										29.5			—			158.9		442.7		—		631.1
	Intangible assets, net										0.2			—			196.6		407.3		—		604.1
	Goodwill										—			—			2,029.10		1,673.90		0.3		3,703.30
	Other long-term assets										22.7			—			296.9		83.9		-7.5		396
								Total assets		$	6,999.30		$	60.6		$	9,220.70	$	5,056.20	$	-12,246.50	$	9,090.30
	LIABILITIES AND EQUITY
	Current liabilities:
		Current portion of long-term debt								$	44		$	—		$	9.6	$	38.6	$	—	$	92.2
		Accounts payable and subcontractors payable, including retentions									3.7			—			403.5		358.5		-68.2		697.5
		Accrued salaries and employee benefits									32.4			—			355.7		168		—		556.1
		Billings in excess of costs and accrued earnings on contracts									—			—			118.8		106.3		—		225.1
		Intercompany accounts payable									2,370.70			—			1,480.70		359.7		-4,211.10		0
		Short-term intercompany notes payable									14.3			—			20.5		21.6		-56.4		—
		Other current liabilities									68.5			17.9			124		61.8		-14.9		257.3
					Total current liabilities						2,533.60			17.9			2,512.80		1,114.50		-4,350.60		1,828.20
	Long-term debt										915.5			699.6			17.1		270.8		—		1,903.00
	Deferred tax liabilities										—			—			329.5		76.8		-7		399.3
	Self-insurance reserves										—			—			9.4		122.6		—		132
	Pension and post-retirement benefit obligations										—			—			169		109.5		—		278.5
	Long-term intercompany notes payable										—			—			561.1		1,269.80		-1,830.90		—
	Other long-term liabilities										3.2			—			228.2		46		—		277.4
							Total liabilities				3,452.30			717.5			3,827.10		3,010.00		-6,188.50		4,818.40
	URS stockholders' equity										4,123.50			16.5			5,996.20		1,932.60		-7,945.30		4,123.50
	Intercompany notes receivable										-576.5			-673.4			-602.6		-34.8		1,887.30		—
					Total URS stockholders' equity						3,547.00			-656.9			5,393.60		1,897.80		-6,058.00		4,123.50
	Noncontrolling interests										—			—			—		148.4		—		148.4
							Total stockholders' equity				3,547.00			-656.9			5,393.60		2,046.20		-6,058.00		4,271.90
								Total liabilities and stockholders' equity		$	6,999.30		$	60.6		$	9,220.70	$	5,056.20	$	-12,246.50	$	9,090.30
										CONDENSED CONSOLIDATING BALANCE SHEET - As Revised and Restated
										As of December 28, 2012
	(in millions)									Issuer Parent			Issuer Fox LP			Guarantors		Non- Guarantors		Eliminations		Consolidated
	ASSETS
	Current assets:
		Cash and cash equivalents								$	14.4		$	—		$	16.3	$	285.4	$	-1.6	$	314.5
		Accounts receivable, including retentions									—			—			771.3		811.8		-28.3		1,554.80
		Costs and accrued earnings in excess of billings on contracts									—			—			876.9		515.7		-8.3		1,384.30
		Less receivable allowances									—			—			-29.1		-40.6		—		-69.7
			Net accounts receivable								—			—			1,619.10		1,286.90		-36.6		2,869.40
		Intercompany accounts receivable									1,793.20			22.4			3,933.10		1,269.00		-7,017.70		—
		Deferred tax assets									6.8			—			60.3		0.5		—		67.6
		Inventory									—			—			5.5		56		—		61.5
		Other current assets									38.2			—			65.5		111.3		-10.8		204.2
					Total current assets						1,852.60			22.4			5,699.80		3,009.10		-7,066.70		3,517.20
	Investments in and advances to subsidiaries and unconsolidated joint ventures										5,823.50			20.7			2,036.30		242.2		-7,844.40		278.3
	Property and equipment at cost, net										26.9			—			159.7		500.9		—		687.5
	Intangible assets, net										0.2			—			223.3		468.7		—		692.2
	Goodwill										—			—			2,029.10		1,692.50		—		3,721.60
Other long-term assets										22.3			—			231.3		115.1		-4.5		364.2
							Total assets		$	7,725.50		$	43.1		$	10,379.50	$	6,028.50	$	-14,915.60	$	9,261.00
LIABILITIES AND EQUITY
Current liabilities:
	Current portion of long-term debt								$	18.9		$	—		$	10	$	42.9	$	—	$	71.8
	Accounts payable and subcontractors payable, including retentions									4.2			—			382.7		454.8		-38.2		803.5
	Accrued salaries and employee benefits									41			—			362.7		155.1		—		558.8
	Billings in excess of costs and accrued earnings on contracts									—			—			146.3		143		-0.2		289.1
	Intercompany accounts payable									3,165.70			14.7			2,793.40		1,043.90		-7,017.70		—
	Short-term intercompany notes payable									14.3			—			20		21.6		-55.9		—
	Other current liabilities									59.5			8.6			146.2		78		-14.5		277.8
				Total current liabilities						3,303.60			23.3			3,861.30		1,939.30		-7,126.50		2,001.00
Long-term debt										952.2			699.6			16.9		323.8		—		1,992.50
Deferred tax liabilities										—			—			299.1		85.6		-4.8		379.9
Self-insurance reserves										—			—			18.3		111.5		—		129.8
Pension and post-retirement benefit obligations										—			—			185.4		115.5		—		300.9
Long-term intercompany notes payable										—			—			561.7		1,265.40		-1,827.10		—
Other long-term liabilities										2.8			—			197.1		71.1		—		271
						Total liabilities				4,258.60			722.9			5,139.80		3,912.20		-8,958.40		5,075.10
URS stockholders' equity										4,044.00			8			5,823.50		2,008.70		-7,840.20		4,044.00
Intercompany notes receivable										-577.1			-687.8			-583.8		-34.3		1,883.00		—
				Total URS stockholders' equity						3,466.90			-679.8			5,239.70		1,974.40		-5,957.20		4,044.00
Noncontrolling interests										—			—			—		141.9		—		141.9
						Total stockholders' equity				3,466.90			-679.8			5,239.70		2,116.30		-5,957.20		4,185.90
							Total liabilities and stockholders' equity		$	7,725.50		$	43.1		$	10,379.50	$	6,028.50	$	-14,915.60	$	9,261.00
Schedule of condensed income statement [Table Text Block]	'
										CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS – UNAUDITED
										For the Three Months Ended September 27, 2013
	(in millions)									Issuer Parent			Issuer Fox LP			Guarantors		Non- Guarantors		Eliminations		Consolidated
	Revenues									$	—		$	—		$	1,634.80	$	1,185.10	$	-84.4	$	2,735.50
	Cost of revenues										—			—			-1,532.10		-1,111.30		84.4		-2,559.00
	General and administrative expenses										-15.4			—			—		1.1		—		-14.3
	Equity in income (loss) in subsidiaries										77.5			7.7			46.2		-5.5		-125.9		—
	Equity in income of unconsolidated joint ventures										—			—			0.8		16.3		—		17.1
	Intercompany royalty and general and administrative charges										39.3			—			-35.1		-4.2		—		—
				Operating income (loss)							101.4			7.7			114.6		81.5		-125.9		179.3
	Interest expense										-8.5			-9.7			-0.2		-4.8		—		-23.2
	Intercompany interest income										2.5			1			9.2		0.4		-13.1		—
	Intercompany interest expense										-0.3			—			-2.7		-10.1		13.1		—
	Other income (expenses)										—			—			—		1.6		—		1.6
				Income (loss) before income taxes							95.1			-1			120.9		68.6		-125.9		157.7
	Income tax benefit (expense)										-6.3			3.2			-43.4		4.2		—		-42.3
				Net income (loss) including noncontrolling interests							88.8			2.2			77.5		72.8		-125.9		115.4
	Noncontrolling interests in income of consolidated subsidiaries										—			—			—		-26.6		—		-26.6
						Net income (loss) attributable to URS				$	88.8		$	2.2		$	77.5	$	46.2	$	-125.9	$	88.8
						Comprehensive income (loss) attributable to URS				$	116.8		$	2.2		$	107.1	$	71.9	$	-181.2	$	116.8
										CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS – UNAUDITED
										For the Three Months Ended September 28, 2012
	(in millions)									Issuer Parent			Issuer Fox LP			Guarantors		Non- Guarantors		Eliminations		Consolidated
	Revenues									$	—		$	—		$	1,680.80	$	1,354.70	$	-87.9	$	2,947.60
	Cost of revenues										—			—			-1,561.40		-1,279.80		87.9		-2,753.30
	General and administrative expenses										-22.8			—			—		0.2		—		-22.6
	Acquisition-related expenses										0.8			—			—		—		—		0.8
	Equity in income (loss) in subsidiaries										109.2			8.5			72.3		3.6		-193.6		—
	Equity in income of unconsolidated joint ventures										—			—			10.6		20.5		—		31.1
	Intercompany royalty and general and administrative charges										35.4			—			-32.9		-2.5		—		—
				Operating income (loss)							122.6			8.5			169.4		96.7		-193.6		203.6
	Interest expense										-21.7			4.7			0.1		-3.6		—		-20.5
	Intercompany interest income										2.5			1.1			8.4		-0.2		-11.8		—
	Intercompany interest expense										-0.3			—			-2.2		-9.3		11.8		—
	Other income (expenses)										—			—			—		10.8		—		10.8
				Income (loss) before income taxes							103.1			14.3			175.7		94.4		-193.6		193.9
	Income tax benefit (expense)										3.6			-2.2			-66.5		-1		—		-66.1
				Net income (loss) including noncontrolling interests							106.7			12.1			109.2		93.4		-193.6		127.8
	Noncontrolling interests in income of consolidated subsidiaries										—			—			—		-21.1		—		-21.1
						Net income (loss) attributable to URS				$	106.7		$	12.1		$	109.2	$	72.3	$	-193.6	$	106.7
						Comprehensive income (loss) attributable to URS				$	167		$	12.1		$	171.8	$	141.4	$	-325.3	$	167
										CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS – UNAUDITED
										For the Nine Months Ended September 27, 2013
	(In millions)									Issuer Parent			Issuer Fox LP			Guarantors		Non- Guarantors		Eliminations		Consolidated
	Revenues									$	—		$	—		$	4,961.80	$	3,620.20	$	-252	$	8,330.00
	Cost of revenues										—			—			-4,616.90		-3,487.00		252		-7,851.90
	General and administrative expense										-61.4			—			—		1.5		—		-59.9
	Equity in income (loss) in subsidiaries										209.7			23.1			55.2		-14.8		-273.2		—
	Equity in income of unconsolidated joint ventures										—			—			5.5		53.6		—		59.1
	Intercompany royalty and general and administrative charges										108			—			-93.8		-14.2		—		—
				Operating income (loss)							256.3			23.1			311.8		159.3		-273.2		477.3
	Interest expense										-24.4			-26.4			-0.6		-14.4		—		-65.8
	Intercompany interest income										7.4			2.8			27.1		1.1		-38.4		—
	Intercompany interest expense										-0.8			—			-7.7		-29.9		38.4		—
	Other income (expense)										—			—			—		-4.2		—		-4.2
				Income (loss) before income taxes							238.5			-0.5			330.6		111.9		-273.2		407.3
	Income tax benefit (expense)										-10.5			8.8			-120.9		-0.8		—		-123.4
				Net income (loss) including noncontrolling interests							228			8.3			209.7		111.1		-273.2		283.9
	Noncontrolling interests in income of consolidated subsidiaries										—			—			—		-55.9		—		-55.9
						Net income (loss) attributable to URS				$	228		$	8.3		$	209.7	$	55.2	$	-273.2	$	228
						Comprehensive income (loss) attributable to URS				$	186.6		$	8.3		$	173.7	$	5.2	$	-187.2	$	186.6
										CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS – UNAUDITED
										For the Nine Months Ended September 28, 2012
(In millions)									Issuer Parent			Issuer Fox LP			Guarantors		Non- Guarantors		Eliminations		Consolidated
Revenues									$	—		$	—		$	5,124.00	$	3,170.70	$	-294.9	$	7,999.80
Cost of revenues										—			—			-4,770.90		-3,008.00		294.9		-7,484.00
General and administrative expense										-61.3			—			—		-0.7		—		-62
Acquisition-related expense										-7.4			—			—		-8.7		—		-16.1
Equity in income (loss) in subsidiaries										240.4			12.9			103.4		1		-357.7		—
Equity in income of unconsolidated joint ventures										—			—			17		59.8		—		76.8
Intercompany royalty and general and administrative charges										108.5			—			-98.9		-9.6		—		—
			Operating income (loss)							280.2			12.9			374.6		204.5		-357.7		514.5
Interest expense										-44.1			—			-0.4		-6.5		—		-51
Intercompany interest income										5.1			1.6			12.9		1.6		-21.2		—
Intercompany interest expense										-1.1			—			-4.6		-15.5		21.2		—
Other income (expense)										-0.3			—			—		4.4		—		4.1
			Income (loss) before income taxes							239.8			14.5			382.5		188.5		-357.7		467.6
Income tax benefit (expense)										0.2			-0.6			-142.1		-12.7		—		-155.2
			Net income (loss) including noncontrolling interests							240			13.9			240.4		175.8		-357.7		312.4
Noncontrolling interests in income of consolidated subsidiaries										—			—			—		-72.4		—		-72.4
					Net income (loss) attributable to URS				$	240		$	13.9		$	240.4	$	103.4	$	-357.7	$	240
					Comprehensive income (loss) attributable to URS				$	289.1		$	13.9		$	294.4	$	163.9	$	-472.2	$	289.1
Schedule of condensed cash flow statement [Table Text Block]	'
										CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS – UNAUDITED
										For the Nine Months Ended September 27, 2013
	(in millions)									Issuer Parent			Issuer Fox LP			Guarantors		Non- Guarantors		Eliminations		Consolidated
	Net cash from operating activities									$	-75.6		$	-6.3		$	379.7	$	101.8	$	-41.3	$	358.3
	Cash flows from investing activities:
		Proceeds from disposal of property and equipment									—			—			1.4		31.2		—		32.6
		Investments in unconsolidated joint ventures									—			—			-0.1		—		—		-0.1
		Changes in restricted cash									—			—			—		4.6		—		4.6
		Capital expenditures, less equipment purchased through capital leases and equipment notes									-6.2			—			-23.3		-38.7		—		-68.2
		Receipts from intercompany notes receivable									—			15.3			—		—		-15.3		—
		Other intercompany investing activities									549.4			-9			676.7		369.6		-1,586.70		—
	Net cash from investing activities										543.2			6.3			654.7		366.7		-1,602.00		-31.1
	Cash flows from financing activities:
		Payments on long-term debt									—			—			-3.3		-0.3		—		-3.6
		Borrowings from revolving line of credit									871			—			—		58.4		—		929.4
		Payments on revolving line of credit									-871			—			—		-116.2		—		-987.2
		Net borrowings (payments) under foreign lines of credit and short-term notes									-16.1			—			-0.1		-4.9		—		-21.1
		Net change in overdrafts									—			—			-50.7		-6		1.6		-55.1
		Payments on capital lease obligations									-0.6			—			-3.5		-9.8		—		-13.9
		Excess tax benefits from stock-based compensation									1.6			—			—		—		—		1.6
		Proceeds from employee stock purchases and exercises of stock options									14.6			—			—		—		—		14.6
		Distributions to noncontrolling interests									—			—			—		-49.2		—		-49.2
		Dividends paid									-46.8			—			—		—		—		-46.8
		Repurchases of common stock									-93.3			—			—		—		—		-93.3
		Intercompany notes repayments									—			—			—		-15.3		15.3		—
		Other intercompany financing activities									-226.3			—			-973		-387.4		1,586.70		—
	Net cash from financing activities										-366.9			—			-1,030.60		-530.7		1,603.60		-324.6
	Net change in cash and cash equivalents										100.7			—			3.8		-62.2		-39.7		2.6
	Effect of foreign exchange rate changes on cash and cash equivalents										—			—			—		-2.9		—		-2.9
	Cash and cash equivalents at beginning of period										14.4			—			16.3		285.4		-1.6		314.5
	Cash and cash equivalents at end of period									$	115.1		$	—		$	20.1	$	220.3	$	-41.3	$	314.2
										CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS – UNAUDITED
										For the Nine Months Ended September 28, 2012
	(in millions)									Issuer Parent			Issuer Fox LP			Guarantors		Non- Guarantors		Eliminations		Consolidated
	Net cash from operating activities									$	51.7		$	-0.6		$	55.4	$	165.1	$	27.5	$	299.1
	Cash flows from investing activities:
		Payments for business acquisitions, net of cash acquired									—			—			—		-1,345.70		—		-1,345.70
		Proceeds from disposal of property and equipment									—			—			1.4		15.8		—		17.2
		Payments in settlement of foreign currency forward contracts									-1,260.60			—			—		—		—		-1,260.60
		Receipts in settlement of foreign currency forward contracts									1,260.30			—			—		—		—		1,260.30
		Investments in unconsolidated joint ventures									—			—			-4.3		-1.1		—		-5.4
		Changes in restricted cash									—			—			—		3.8		—		3.8
		Capital expenditures, less equipment purchased through capital leases and equipment notes									-8.4			—			-30		-63.4		—		-101.8
		Dividends received									—			—			0.1		—		-0.1		—
		Investments in intercompany notes receivable									-555			-800			-555		—		1,910.00		—
		Receipts from intercompany notes receivable									97.8			—			—		30		-127.8		—
		Other intercompany investing activities									-670.3			0.6			73		171.3		425.4		—
	Net cash from investing activities										-1,136.20			-799.4			-514.8		-1,189.30		2,207.50		-1,432.20
	Cash flows from financing activities:
		Borrowings from long-term debt									198.9			800			—		—		—		998.9
		Payments on long-term debt									—			—			-4.3		-0.1		—		-4.4
		Borrowings from revolving line of credit									560			—			—		—		—		560
		Payments on revolving line of credit									-433.6			—			—		—		—		-433.6
		Net payments under foreign lines of credit and short-term notes									-0.6			—			-0.1		-12		—		-12.7
		Net change in overdrafts									75.7			—			-0.7		4.8		-75.7		4.1
		Payments on capital lease obligations									-0.6			—			-3.7		-5.8		—		-10.1
		Payments of debt issuance costs									-8.8			—			—		—		—		-8.8
		Proceeds from employee stock purchases and exercises of stock options									7.7			—			—		—		—		7.7
		Distributions to noncontrolling interests									—			—			—		-51.9		—		-51.9
		Contributions and advances from noncontrolling interests									—			—			0.1		2.2		—		2.3
		Dividends paid									-29.8			—			—		-0.1		0.1		-29.8
		Repurchases of common stock									-40			—			—		—		—		-40
		Intercompany notes borrowings									—			—			555		1,355.00		-1,910.00		—
	Intercompany notes repayments									-30			—			—		-97.8		127.8		—
	Other intercompany financing activities									743.4			—			-95.1		-222.9		-425.4		—
Net cash from financing activities										1,042.30			800			451.2		971.4		-2,283.20		981.7
Net change in cash and cash equivalents										-42.2			0			-8.2		-52.8		-48.2		-151.4
Effect of foreign exchange rate changes on cash and cash equivalents										—			—			—		4.6		—		4.6
Cash and cash equivalents at beginning of period										193.8			—			24.4		294.5		-76.7		436
Cash and cash equivalents at end of period									$	151.6		$	0		$	16.2	$	246.3	$	-124.9	$	289.2
Revision of Previously Issued Financial Statements [Abstract]	'
Revision of Previously Issued Financial Statements [Table Text Block]	'
								As Reported			Adjustment			As Restated
		(In millions)
		Consolidated Balance Sheet Data:
		Balance as of December 28, 2012
		Goodwill						$	3,247.10		$	474.5		$	3,721.60
		Total assets						$	8,786.50		$	474.5		$	9,261.00
		Deferred tax liabilities						$	328.3		$	51.6		$	379.9
		Total liabilities						$	5,023.50		$	51.6		$	5,075.10
		Retained earnings						$	1,224.40		$	422.9		$	1,647.30
		Total URS stockholders' equity						$	3,621.10		$	422.9		$	4,044.00
		Total stockholders' equity						$	3,763.00		$	422.9		$	4,185.90
		Total liabilities and stockholders' equity						$	8,786.50		$	474.5		$	9,261.00
		Consolidated Statement of Changes in Stockholders' Equity Data:
		Balance as of December 30, 2011
		Retained earnings						$	975.2		$	422.9		$	1,398.10
		Total URS stockholders' equity						$	3,377.20		$	422.9		$	3,800.10
		Total equity						$	3,484.40		$	422.9		$	3,907.30
		Balance as of September 28, 2012
		Retained earnings						$	1,169.20		$	422.9		$	1,592.10
		Total URS stockholders' equity						$	3,605.10		$	422.9		$	4,028.00
		Total equity						$	3,738.10		$	422.9		$	4,161.00
		Balance as of December 28, 2012
		Retained earnings						$	1,224.40		$	422.9		$	1,647.30
		Total URS stockholders' equity						$	3,621.10		$	422.9		$	4,044.00
		Total equity						$	3,763.00		$	422.9		$	4,185.90
										As of December 28, 2012
	(in millions)									Issuer Parent			Issuer Fox LP			Guarantors		Non- Guarantors		Eliminations		Consolidated
	Condensed Consolidating Balance Sheet Data:
	As Reported
	ASSETS
	Current assets:
		Cash and cash equivalents								$	14.4		$	—		$	16.3	$	285.4	$	-1.6	$	314.5
		Accounts receivable, including retentions									—			—			771.2		811.8		-28.2		1,554.80
		Costs and accrued earnings in excess of billings on contracts									—			—			876.9		515.7		-8.3		1,384.30
		Less receivable allowances									—			—			-29.1		-40.6		—		-69.7
			Net accounts receivable								—			—			1,619.00		1,286.90		-36.5		2,869.40
		Intercompany accounts receivable									1,765.80			22.4			4,248.90		1,530.60		-7,567.70		—
		Deferred tax assets									6.8			—			60.3		0.5		—		67.6
		Inventory									—			—			5.5		56		—		61.5
		Other current assets									38.2			—			65.5		111.3		-10.8		204.2
					Total current assets						1,825.20			22.4			6,015.50		3,270.70		-7,616.60		3,517.20
	Investments in and advances to subsidiaries and unconsolidated joint ventures										5,400.50			20.7			1,812.00		258.9		-7,213.80		278.3
	Property and equipment at cost, net										26.9			—			159.7		500.9		—		687.5
	Intangible assets, net										0.2			—			223.5		468.5		—		692.2
	Goodwill										—			—			1,778.70		1,468.40		—		3,247.10
	Other long-term assets										22.4			—			231.3		115.3		-4.8		364.2
								Total assets		$	7,275.20		$	43.1		$	10,220.70	$	6,082.70	$	-14,835.20	$	8,786.50
	LIABILITIES AND EQUITY
	Current liabilities:
		Current portion of long-term debt								$	18.9		$	—		$	10	$	42.9	$	—	$	71.8
		Accounts payable and subcontractors payable, including retentions									4.1			—			382.8		454.8		-38.2		803.5
		Accrued salaries and employee benefits									41.1			—			362.6		155.1		—		558.8
		Billings in excess of costs and accrued earnings on contracts									—			—			146.4		143		-0.3		289.1
		Intercompany accounts payable									3,138.30			14.7			3,109.10		1,305.60		-7,567.70		—
		Short-term intercompany notes payable									14.3			—			20		599.2		-633.5		—
		Other current liabilities									59.4			8.6			146.3		74		-10.5		277.8
					Total current liabilities						3,276.10			23.3			4,177.20		2,774.60		-8,250.20		2,001.00
	Long-term debt										952.2			699.6			16.9		323.8		—		1,992.50
	Deferred tax liabilities										—			—			247.6		85.5		-4.8		328.3
	Self-insurance reserves										—			—			18.3		111.5		—		129.8
	Pension and post-retirement benefit obligations										—			—			185.4		115.5		—		300.9
	Long-term intercompany notes payable										—			—			561.7		687.8		-1,249.50		—
	Other long-term liabilities										2.9			—			197		71.1		—		271
						Total liabilities				4,231.20			722.9			5,404.10		4,169.80		-9,504.50		5,023.50
URS stockholders' equity										3,621.10			8			5,400.40		1,805.30		-7,213.70		3,621.10
Intercompany notes receivable										-577.1			-687.8			-583.8		-34.3		1,883.00		—
				Total URS stockholders' equity						3,044.00			-679.8			4,816.60		1,771.00		-5,330.70		3,621.10
Noncontrolling interests										—			—			—		141.9		—		141.9
						Total stockholders' equity				3,044.00			-679.8			4,816.60		1,912.90		-5,330.70		3,763.00
							Total liabilities and stockholders' equity		$	7,275.20		$	43.1		$	10,220.70	$	6,082.70	$	-14,835.20	$	8,786.50
									As of December 28, 2012
(in millions)									Issuer Parent			Issuer Fox LP			Guarantors		Non- Guarantors		Eliminations		Consolidated
Restatement Adjustments
ASSETS
Investments in and advances to subsidiaries and unconsolidated joint ventures									$	422.9		$	—		$	224.1	$	—	$	-647	$	—
Goodwill									$	—		$	—		$	250.4	$	224.1	$	—	$	474.5
Total assets									$	422.9		$	—		$	474.5	$	224.1	$	-647	$	474.5
LIABILITIES AND EQUITY
Deferred tax liabilities									$	—		$	—		$	51.6	$	—	$	—	$	51.6
Total liabilities									$	—		$	—		$	51.6	$	—	$	—	$	51.6
URS stockholders' equity									$	422.9		$	—		$	422.9	$	224.1	$	-647	$	422.9
Total URS stockholders' equity									$	422.9		$	—		$	422.9	$	224.1	$	-647	$	422.9
Total stockholders' equity									$	422.9		$	—		$	422.9	$	224.1	$	-647	$	422.9
Total liabilities and stockholders' equity									$	422.9		$	—		$	474.5	$	224.1	$	-647	$	474.5
									As of December 28, 2012
(in millions)									Issuer Parent			Issuer Fox LP			Guarantors		Non- Guarantors		Eliminations		Consolidated
Revision Adjustments
ASSETS
Current assets:
	Accounts receivable, including retentions									—			—			0.1		—		-0.1		—
		Net accounts receivable								—			—			0.1		—		-0.1		—
	Intercompany accounts receivable									27.4			—			-315.8		-261.6		550		—
				Total current assets						27.4			—			-315.7		-261.6		549.9		—
Investments in and advances to subsidiaries and unconsolidated joint ventures										0.1			—			0.2		-16.7		16.4		—
Intangible assets, net										—			—			-0.2		0.2		—		—
Other long-term assets										-0.1			—			—		-0.2		0.3		—
							Total assets		$	27.4		$	—		$	-315.7	$	-278.3	$	566.6	$	—
LIABILITIES AND EQUITY
Current liabilities:
	Accounts payable and subcontractors payable, including retentions									0.1			—			-0.1		—		—		—
	Accrued salaries and employee benefits									-0.1			—			0.1		—		—		—
	Billings in excess of costs and accrued earnings on contracts									—			—			-0.1		—		0.1		—
	Intercompany accounts payable									27.4			—			-315.7		-261.7		550		—
	Short-term intercompany notes payable									—			—			—		-577.6		577.6		—
	Other current liabilities									0.1			—			-0.1		4		-4		—
				Total current liabilities						27.5			—			-315.9		-835.3		1,123.70		—
Deferred tax liabilities										—			—			-0.1		0.1		—		—
Long-term intercompany notes payable										—			—			—		577.6		-577.6		—
Other long-term liabilities										-0.1			—			0.1		—		—		—
						Total liabilities				27.4			—			-315.9		-257.6		546.1		—
URS stockholders' equity										0			—			0.2		-20.7		20.5		—
				Total URS stockholders' equity						—			—			0.2		-20.7		20.5		—
						Total stockholders' equity				—			—			0.2		-20.7		20.5		—
							Total liabilities and stockholders' equity		$	27.4		$	—		$	-315.7	$	-278.3	$	566.6	$	—
									As of December 28, 2012
(in millions)									Issuer Parent			Issuer Fox LP			Guarantors		Non- Guarantors		Eliminations		Consolidated
As Restated
ASSETS
Current assets:
	Cash and cash equivalents								$	14.4		$	—		$	16.3	$	285.4	$	-1.6	$	314.5
	Accounts receivable, including retentions									—			—			771.3		811.8		-28.3		1,554.80
	Costs and accrued earnings in excess of billings on contracts									—			—			876.9		515.7		-8.3		1,384.30
	Less receivable allowances									—			—			-29.1		-40.6		—		-69.7
		Net accounts receivable								—			—			1,619.10		1,286.90		-36.6		2,869.40
	Intercompany accounts receivable									1,793.20			22.4			3,933.10		1,269.00		-7,017.70		—
	Deferred tax assets									6.8			—			60.3		0.5		—		67.6
	Inventory									—			—			5.5		56		—		61.5
	Other current assets									38.2			—			65.5		111.3		-10.8		204.2
				Total current assets						1,852.60			22.4			5,699.80		3,009.10		-7,066.70		3,517.20
Investments in and advances to subsidiaries and unconsolidated joint ventures										5,823.50			20.7			2,036.30		242.2		-7,844.40		278.3
Property and equipment at cost, net										26.9			—			159.7		500.9		—		687.5
Intangible assets, net										0.2			—			223.3		468.7		—		692.2
Goodwill										—			—			2,029.10		1,692.50		—		3,721.60
Other long-term assets										22.3			—			231.3		115.1		-4.5		364.2
							Total assets		$	7,725.50		$	43.1		$	10,379.50	$	6,028.50	$	-14,915.60	$	9,261.00
LIABILITIES AND EQUITY
Current liabilities:
	Current portion of long-term debt								$	18.9		$	—		$	10	$	42.9	$	—	$	71.8
	Accounts payable and subcontractors payable, including retentions									4.2			—			382.7		454.8		-38.2		803.5
	Accrued salaries and employee benefits									41			—			362.7		155.1		—		558.8
	Billings in excess of costs and accrued earnings on contracts									—			—			146.3		143		-0.2		289.1
	Intercompany accounts payable									3,165.70			14.7			2,793.40		1,043.90		-7,017.70		—
	Short-term intercompany notes payable									14.3			—			20		21.6		-55.9		—
	Other current liabilities									59.5			8.6			146.2		78		-14.5		277.8
				Total current liabilities						3,303.60			23.3			3,861.30		1,939.30		-7,126.50		2,001.00
Long-term debt										952.2			699.6			16.9		323.8		—		1,992.50
Deferred tax liabilities										—			—			299.1		85.6		-4.8		379.9
Self-insurance reserves										—			—			18.3		111.5		—		129.8
Pension and post-retirement benefit obligations										—			—			185.4		115.5		—		300.9
Long-term intercompany notes payable										—			—			561.7		1,265.40		-1,827.10		—
Other long-term liabilities										2.8			—			197.1		71.1		—		271
						Total liabilities				4,258.60			722.9			5,139.80		3,912.20		-8,958.40		5,075.10
URS stockholders' equity										4,044.00			8			5,823.50		2,008.70		-7,840.20		4,044.00
Intercompany notes receivable										-577.1			-687.8			-583.8		-34.3		1,883.00		—
				Total URS stockholders' equity						3,466.90			-679.8			5,239.70		1,974.40		-5,957.20		4,044.00
Noncontrolling interests										—			—			—		141.9		—		141.9
						Total stockholders' equity				3,466.90			-679.8			5,239.70		2,116.30		-5,957.20		4,185.90
							Total liabilities and stockholders' equity		$	7,725.50		$	43.1		$	10,379.50	$	6,028.50	$	-14,915.60	$	9,261.00

BUSINESS_BASIS_OF_PRESENTATION3

BUSINESS, BASIS OF PRESENTATION, AND ACCOUNTING POLICIES (DETAILS) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 27, 2013	Sep. 28, 2012	Sep. 27, 2013	Sep. 28, 2012	Dec. 30, 2011	Dec. 28, 2012		Sep. 30, 2011
	countries		reportingunits					reportingunits
	employees		countries
			employees
Cash and cash equivalents (Textuals) [Abstract]	'	'	'	'	'	'		'
Restricted cash and cash equivalents	$12.50	'	$12.50	'	'	$17.10		'
Change in accounting estimate [Line Items]	'	'	'	'	'	'		'
Revenues	2,735.50	2,947.60	8,330	7,999.80	'	'		'
Organization, consolidation and presentation of financial statements, as shown (Textuals) [Abstract]	'	'	'	'	'	'		'
Entity number of employees	50,000	'	50,000	'	'	'		'
Number of countries in which entity operates	50	'	50	'	'	'		'
Number of operating segments	'	'	4	'	'	'		'
Consolidated Balance Sheet Data [Abstract]	'	'	'	'	'	'		'
Goodwill	3,703.30	'	3,703.30	'	'	3,721.60		'
Total assets	9,090.30	'	9,090.30	'	'	9,261	[1]	'
Deferred tax liabilities	399.3	'	399.3	'	'	379.9		'
Total liabilities	4,818.40	'	4,818.40	'	'	5,075.10		'
Retained earnings	1,827.40	'	1,827.40	'	'	1,647.30		'
Total URS stockholders' equity	4,123.50	'	4,123.50	'	'	4,044		'
Total stockholders' equity	4,271.90	4,161	4,271.90	4,161	3,907.30	4,185.90		'
Total liabilities and stockholders' equity	9,090.30	'	9,090.30	'	'	9,261		'
Consolidated Statements of Operations Data [Abstract]	'	'	'	'	'	'		'
Income (loss) before income taxes	157.7	193.9	407.3	467.6	'	'		'
Income tax benefit (expense)	-42.3	-66.1	-123.4	-155.2	'	'		'
Net income (loss) including noncontrolling interests	115.4	127.8	283.9	312.4	'	'		'
Noncontrolling interests in income of consolidated subsidiaries	-26.6	-21.1	-55.9	-72.4	'	'		'
Net income (loss) attributable to URS	88.8	106.7	228	240	'	'		'
Consolidated Statements of Changes in Stockholders Equity Data [Abstract]	'	'	'	'	'	'		'
Ending Balances	4,271.90	4,161	4,271.90	4,161	3,907.30	4,185.90		'
Consolidated Statements of Cash Flows Data [Abstract]	'	'	'	'	'	'		'
Accounts payable, accrued salaries and employee benefits, and other current liabilities	'	'	-118.1	50.4	'	'		'
Other long-term liabilities	'	'	12.5	-9.2	'	'		'
Goodwill impairment loss after tax	32.9	'	'	'	'	'		'
Number of reporting units whose book value exceeds its fair value	'	'	'	'	'	'		5
Restatement of prior year income, net of tax [Abstract]	'	'	'	'	'	'		'
Impact of restatement on earnings per share, diluted	'	'	'	'	$5.47	'		'
Retained Earnings	'	'	'	'	'	'		'
Consolidated Balance Sheet Data [Abstract]	'	'	'	'	'	'		'
Total stockholders' equity	1,827.40	1,592.10	1,827.40	1,592.10	1,398.10	1,647.30		'
Consolidated Statements of Operations Data [Abstract]	'	'	'	'	'	'		'
Net income (loss) including noncontrolling interests	'	'	228	240	'	'		'
Consolidated Statements of Changes in Stockholders Equity Data [Abstract]	'	'	'	'	'	'		'
Ending Balances	1,827.40	1,592.10	1,827.40	1,592.10	1,398.10	1,647.30		'
Total URS Stockholders' Equity	'	'	'	'	'	'		'
Consolidated Balance Sheet Data [Abstract]	'	'	'	'	'	'		'
Total stockholders' equity	4,123.50	4,028	4,123.50	4,028	3,800.10	4,044		'
Consolidated Statements of Operations Data [Abstract]	'	'	'	'	'	'		'
Net income (loss) including noncontrolling interests	'	'	228	240	'	'		'
Consolidated Statements of Changes in Stockholders Equity Data [Abstract]	'	'	'	'	'	'		'
Ending Balances	4,123.50	4,028	4,123.50	4,028	3,800.10	4,044		'
As Reported [Member]	'	'	'	'	'	'		'
Consolidated Balance Sheet Data [Abstract]	'	'	'	'	'	'		'
Goodwill	'	'	'	'	'	3,247.10		'
Total assets	'	'	'	'	'	8,786.50		'
Deferred tax liabilities	'	'	'	'	'	328.3		'
Total liabilities	'	'	'	'	'	5,023.50		'
Retained earnings	'	'	'	'	'	1,224.40		'
Total URS stockholders' equity	'	'	'	'	'	3,621.10		'
Total stockholders' equity	'	3,738.10	'	3,738.10	3,484.40	3,763		'
Total liabilities and stockholders' equity	'	'	'	'	'	8,786.50		'
Consolidated Statements of Changes in Stockholders Equity Data [Abstract]	'	'	'	'	'	'		'
Ending Balances	'	3,738.10	'	3,738.10	3,484.40	3,763		'
Consolidated Statements of Cash Flows Data [Abstract]	'	'	'	'	'	'		'
Goodwill impairment loss after tax	'	'	'	'	732.2	'		'
As Reported [Member] | Retained Earnings	'	'	'	'	'	'		'
Consolidated Balance Sheet Data [Abstract]	'	'	'	'	'	'		'
Total stockholders' equity	'	1,169.20	'	1,169.20	975.2	1,224.40		'
Consolidated Statements of Changes in Stockholders Equity Data [Abstract]	'	'	'	'	'	'		'
Ending Balances	'	1,169.20	'	1,169.20	975.2	1,224.40		'
As Reported [Member] | Total URS Stockholders' Equity	'	'	'	'	'	'		'
Consolidated Balance Sheet Data [Abstract]	'	'	'	'	'	'		'
Total stockholders' equity	'	3,605.10	'	3,605.10	3,377.20	3,621.10		'
Consolidated Statements of Changes in Stockholders Equity Data [Abstract]	'	'	'	'	'	'		'
Ending Balances	'	3,605.10	'	3,605.10	3,377.20	3,621.10		'
Restatement Adjustments [Member]	'	'	'	'	'	'		'
Consolidated Balance Sheet Data [Abstract]	'	'	'	'	'	'		'
Goodwill	'	'	'	'	474.5	474.5		'
Total assets	'	'	'	'	'	474.5		'
Deferred tax liabilities	'	'	'	'	-51.6	51.6		'
Total liabilities	'	'	'	'	'	51.6		'
Retained earnings	'	'	'	'	422.9	422.9		'
Total URS stockholders' equity	'	'	'	'	'	422.9		'
Total stockholders' equity	'	422.9	'	422.9	422.9	422.9		'
Total liabilities and stockholders' equity	'	'	'	'	'	474.5		'
Consolidated Statements of Operations Data [Abstract]	'	'	'	'	'	'		'
Goodwill impairment	'	'	'	'	474.5	'		'
Income tax benefit (expense)	'	'	'	'	51.6	'		'
Net income (loss) including noncontrolling interests	'	'	'	'	422.9	'		'
Net income (loss) attributable to URS	'	'	'	'	422.9	'		'
Consolidated Statements of Changes in Stockholders Equity Data [Abstract]	'	'	'	'	'	'		'
Ending Balances	'	422.9	'	422.9	422.9	422.9		'
Restatement Adjustments [Member] | Retained Earnings	'	'	'	'	'	'		'
Consolidated Balance Sheet Data [Abstract]	'	'	'	'	'	'		'
Total stockholders' equity	'	422.9	'	422.9	422.9	422.9		'
Consolidated Statements of Changes in Stockholders Equity Data [Abstract]	'	'	'	'	'	'		'
Ending Balances	'	422.9	'	422.9	422.9	422.9		'
Restatement Adjustments [Member] | Total URS Stockholders' Equity	'	'	'	'	'	'		'
Consolidated Balance Sheet Data [Abstract]	'	'	'	'	'	'		'
Total stockholders' equity	'	422.9	'	422.9	422.9	422.9		'
Consolidated Statements of Changes in Stockholders Equity Data [Abstract]	'	'	'	'	'	'		'
Ending Balances	'	422.9	'	422.9	422.9	422.9		'
Performance-based Incentive Fees [Member]	'	'	'	'	'	'		'
Change in accounting estimate [Line Items]	'	'	'	'	'	'		'
Revenues	27.8	'	27.8	'	'	'		'
Impact on operating income	'	'	27.8	'	'	'		'
Impact on net income	'	'	16.7	'	'	'		'
Impact on EPS	'	'	$0.22	'	'	'		'
Programmatic Schedule Incentive Fees [Member]	'	'	'	'	'	'		'
Change in accounting estimate [Line Items]	'	'	'	'	'	'		'
Revenues	'	'	'	40	'	'		'
Impact on operating income	'	'	'	40	'	'		'
Impact on net income	'	'	'	$24	'	'		'
Impact on EPS	'	'	'	$0.32	'	'		'
Number of projects meeting milestone date	'	4	'	4	'	'		'
[1]	Total assets by segments for the year ended December 28, 2012 were restated to correct an error related to prior year goodwill impairment charges. See Note 1, bBusiness, Basis of Presentation, and Accounting Policies.b

EARNINGS_PER_SHARE_DETAILS

EARNINGS PER SHARE (DETAILS)	3 Months Ended				9 Months Ended
In Millions, unless otherwise specified	Sep. 27, 2013		Sep. 28, 2012		Sep. 27, 2013		Sep. 28, 2012
Weighted-average shares of common stock outstanding:	'		'		'		'
Weighted-average shares of common stock outstanding	73.6	[1]	74.5	[1]	73.9	[1]	74.2	[1]
Effect of dilutive stock options, restricted stock awards and units and employee stock purchase plan shares	0.3		0.1		0.4		0.3
Weighted-average shares of common stock outstanding - Diluted	73.9		74.6		74.3		74.5
Anti-dilutive equity awards not included in components of weighted-average shares of common stock outstanding	'		'		0	[2]	1.1
[1]	Weighted-average shares of common stock outstanding is net of treasury stock.
[2]	Represents less than half a million shares.

ACCOUNTS_RECEIVABLE_AND_COSTS_2

ACCOUNTS RECEIVABLE AND COSTS AND ACCRUED EARNINGS IN EXCESS OF BILLINGS ON CONTRACTS (DETAILS) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 27, 2013	Dec. 28, 2012
Accounts receivable and costs and accrued earnings in excess of billings on contracts (Textuals) [Abstract]	'	'
Receivables with contractual terms in excess of one year	$137.20	$121.40
Accounts receivable	73.5	'
Reclassification from Other long-term assets to Unbilled Accounts Receivable	105	'
Schedule of accounts receivable and costs and accrued earnings in excess of billings on contracts [Line Items]	'	'
Total accounts receivable	1,464.80	1,554.80
Unbilled Accounts Receivable	1,774.50	1,649.20
Less: Amounts included in Other long-term assets	-314.8	-264.9
Costs and accrued earnings in excess of billings on contracts	1,459.70	1,384.30
US Federal Government [Member]	'	'
Schedule of accounts receivable and costs and accrued earnings in excess of billings on contracts [Line Items]	'	'
Total accounts receivable	408	376.2
Unbilled Accounts Receivable	863.8	892.7
Others [Member]	'	'
Schedule of accounts receivable and costs and accrued earnings in excess of billings on contracts [Line Items]	'	'
Total accounts receivable	1,056.80	1,178.60
Unbilled Accounts Receivable	$910.70	$756.50

INVENTORY_DETAILS

INVENTORY (DETAILS) (USD $)	Sep. 27, 2013	Dec. 28, 2012
In Millions, unless otherwise specified
Inventory [Abstract]	'	'
Raw materials	$9.80	$14.20
Work in process	5.8	9.8
Finished goods	26.9	24.9
Supplies	11.2	12.6
Inventory	$53.70	$61.50

JOINT_VENTURES_DETAILS

JOINT VENTURES (DETAILS) (USD $)	3 Months Ended				9 Months Ended
In Millions, unless otherwise specified	Sep. 27, 2013		Sep. 28, 2012		Sep. 27, 2013		Sep. 28, 2012		Dec. 28, 2012	Dec. 30, 2011
Joint ventures (Textuals) [Abstract]	'		'		'		'		'	'
Unconsolidated VIEs, Distributions	$22.60		$21.40		$74.70		$67.90		'	'
Example of the joint venture activities	'		'		'The following are examples of activities currently being performed by our significant consolidated and unconsolidated joint ventures: Engineering, procurement and construction of a concrete dam; Liquid waste management services, including the decontamination of a former nuclear fuel reprocessing facility and nuclear hazardous waste processing; Management of ongoing tank cleanup effort, including retrieving, treating, storing and disposing of nuclear waste that is stored at tank farms; Management, operation and cleanup services, including commercial operations, decontamination, decommissioning, and waste management of a nuclear facility in the United Kingdom (“U.K.”); and Operations, maintenance, asset management and project management services to the Canadian energy sector.		'		'	'
Review of our joint ventures	'		'		'We perform a quarterly review of our joint ventures to determine whether there were any changes in the status of the VIEs or changes to the primary beneficiary designation of each VIE. We determined that no such changes occurred during the nine months ended September 27, 2013.		'		'	'
Maximum loss exposure that can not be quantified	'		'		'Exposure to Loss In addition to potential losses arising out of the carrying values of the assets and liabilities of our unconsolidated joint ventures, our maximum exposure to loss also includes performance assurances and guarantees we sometimes provide to clients on behalf of joint ventures that we do not directly control. We enter into these guarantees primarily to support the contractual obligations associated with the joint ventures’ projects. The potential payment amount of an outstanding performance guarantee is typically the remaining cost of work to be performed by or on behalf of third parties under engineering and construction contracts. However, the majority of the unconsolidated joint ventures in which we participate involve cost-reimbursable, level-of-effort projects that are accounted for as service-type projects, not engineering and construction projects that would follow the percentage-of-completion or completed-contract accounting method. Revenues for service-type contracts are recognized in proportion to the number of service activities performed, in proportion to the direct costs of performing the service activities, or evenly across the period of performance, depending upon the nature of the services provided. The services we provide on these cost-reimbursable contracts are management and operations services for government clients and operations and maintenance services for non-government clients. We believe that, due to the continual changes we experience in client funding and scope definitions, reliable estimates of performance guarantees cannot be calculated because they cannot be reliably predicted. In addition, we participate in joint ventures in which the level of our participation is so minimal that we do not have access to those joint ventures’ estimates to complete. The joint ventures where we perform engineering and construction contracts and where we have access to the estimates to complete, which are needed to calculate the performance guarantees, are immaterial.		'		'	'
Consolidated Joint Ventures [Abstract]	'		'		'		'		'	'
Cash and cash equivalents	314.2		289.2		314.2		289.2		314.5	436
Net accounts receivable	2,861.40		'		2,861.40		'		2,869.40	'
Other current assets	227.2		'		227.2		'		204.2	'
Accounts and subcontractors payable	697.5		'		697.5		'		803.5	'
Billings in excess of costs and accrued earnings on contracts	225.1		'		225.1		'		289.1	'
Accrued expenses and other	257.3		'		257.3		'		277.8	'
Total URS equity	4,123.50		'		4,123.50		'		4,044	'
Noncontrolling interests	148.4		'		148.4		'		141.9	'
Unconsolidated Joint Ventures [Abstract]	'		'		'		'		'	'
Current assets	3,503		'		3,503		'		3,517.20	'
Current liabilities	1,828.20		'		1,828.20		'		2,001	'
Revenues	2,735.50		2,947.60		8,330		7,999.80		'	'
Cost of revenues	-2,559		-2,753.30		-7,851.90		-7,484		'	'
Income (loss) from continuing operations before taxes	157.7		193.9		407.3		467.6		'	'
Net income	88.8		106.7		228		240		'	'
Sale of Equity Investment [Abstract]	'		'		'		'		'	'
Other income, net	1.6		10.8		-4.2		4.1		'	'
Consolidated Joint Ventures [Member]	'		'		'		'		'	'
Consolidated Joint Ventures [Abstract]	'		'		'		'		'	'
Cash and cash equivalents	88		'		88		'		80.1	'
Net accounts receivable	275.6		'		275.6		'		282.2	'
Other current assets	2.6		'		2.6		'		2.9	'
Non-current assets	120.6		'		120.6		'		143.3	'
Total assets	486.8		'		486.8		'		508.5	'
Accounts and subcontractors payable	119.7		'		119.7		'		185	'
Billings in excess of costs and accrued earnings on contracts	26.5		'		26.5		'		8.7	'
Accrued expenses and other	54.5		'		54.5		'		40	'
Non-current liabilities	11		'		11		'		22.7	'
Total liabilities	211.7		'		211.7		'		256.4	'
Total URS equity	126.7		'		126.7		'		110.2	'
Noncontrolling interests	148.4		'		148.4		'		141.9	'
Total owners' equity	275.1		'		275.1		'		252.1	'
Total liabilities and owners' equity	486.8		'		486.8		'		508.5	'
Unconsolidated Joint Ventures [Abstract]	'		'		'		'		'	'
Revenues	290.9		369.9		820.3		1,100		'	'
Unconsolidated VIEs [Member]	'		'		'		'		'	'
Consolidated Joint Ventures [Abstract]	'		'		'		'		'	'
Non-current assets	35.3		'		35.3		'		23.8	'
Non-current liabilities	10.3		'		10.3		'		7.8	'
Unconsolidated Joint Ventures [Abstract]	'		'		'		'		'	'
Current assets	681.8		'		681.8		'		594.1	'
Current liabilities	463.6		'		463.6		'		372.5	'
Revenues	480.9	[1]	477	[1]	1,592.80	[1]	1,221.70	[1]	'	'
Cost of revenues	-429.8	[1]	-412.5	[1]	-1,423.50	[1]	-1,044.60	[1]	'	'
Income (loss) from continuing operations before taxes	51.1	[1]	64.5	[1]	169.3	[1]	177.1	[1]	'	'
Net income	$47.40	[1]	$62	[1]	$157.10	[1]	$166	[1]	'	'
[1]	Income from unconsolidated U.S. joint ventures is generally not taxable in most tax jurisdictions in the U.S. The tax expenses on our other unconsolidated joint ventures are primarily related to foreign taxes.

PROPERTY_AND_EQUIPMENT_DETAILS

PROPERTY AND EQUIPMENT (DETAILS) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 27, 2013		Sep. 27, 2013		Sep. 28, 2012	Dec. 28, 2012
Depreciation and amortization expense related to property and equipment (Textuals) [Abstract]	'		'		'	'
Unamortized computer software costs	$78.40		$78.40		'	$71.10
Property plant and equipment [Line Items]	'		'		'	'
Property plant and equipment, gross	1,301.70		1,301.70		'	1,286.20
Accumulated depreciation and amortization	-670.6		-670.6		'	-598.7
Property and equipment, net	631.1	[1]	631.1	[1]	'	687.5	[1]
Gain (loss) on disposal of property and equipment	-12.7		-22.2		-3.1	'
Construction and mining equipment [Member]	'		'		'	'
Property plant and equipment [Line Items]	'		'		'	'
Property plant and equipment, gross	250.4		250.4		'	266.4
Computer software [Member]	'		'		'	'
Property plant and equipment [Line Items]	'		'		'	'
Property plant and equipment, gross	242.1		242.1		'	219.5
Computer hardware [Member]	'		'		'	'
Property plant and equipment [Line Items]	'		'		'	'
Property plant and equipment, gross	217.1		217.1		'	198.2
Vehicles and automotive equipment [Member]	'		'		'	'
Property plant and equipment [Line Items]	'		'		'	'
Property plant and equipment, gross	174.5		174.5		'	172.2
Leasehold improvements [Member]	'		'		'	'
Property plant and equipment [Line Items]	'		'		'	'
Property plant and equipment, gross	141.5		141.5		'	130.1
Land and buildings [Member]	'		'		'	'
Property plant and equipment [Line Items]	'		'		'	'
Property plant and equipment, gross	102		102		'	114.1
Furniture and fixtures [Member]	'		'		'	'
Property plant and equipment [Line Items]	'		'		'	'
Property plant and equipment, gross	92.8		92.8		'	97.7
Other equipment [Member]	'		'		'	'
Property plant and equipment [Line Items]	'		'		'	'
Property plant and equipment, gross	76.3		76.3		'	72.4
Construction in progress [Member]	'		'		'	'
Property plant and equipment [Line Items]	'		'		'	'
Property plant and equipment, gross	$5		$5		'	$15.60
[1]	The unamortized computer software costs were $78.4 million and $71.1 million, respectively, as of September 27, 2013 and December 28, 2012.

ACQUISITION_DETAILS

ACQUISITION (DETAILS)

3 Months Ended

9 Months Ended

3 Months Ended

4 Months Ended

9 Months Ended

Sep. 27, 2013

Sep. 28, 2012

Sep. 27, 2013

Sep. 28, 2012

Sep. 27, 2013

Sep. 28, 2012

14-May-12

14-May-12

Sep. 27, 2013

Sep. 28, 2012

Sep. 27, 2013

Sep. 27, 2013

USD ($)

USD ($)

USD ($)

USD ($)

Flint acquisition [Member]

Flint acquisition [Member]

Flint acquisition [Member]

Flint acquisition [Member]

Flint acquisition [Member]

Flint acquisition [Member]

Flint acquisition [Member]

Flint acquisition [Member]

USD ($)

USD ($)

USD ($)

CAD

USD ($)

USD ($)

Maximum [Member]

Minimum [Member]

Business acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Business acquisition - date of acquisition agreement

'

'

'

'

'

'

'

'

14-May-12

'

'

'

Cash paid to acquire entity

'

'

'

'

'

'

($1,240,000,000)

-1,240,000,000

'

'

'

'

Acquisition-related expenses

'

-800,000

'

16,100,000

'

-800,000

'

'

'

16,100,000

'

'

Preliminary allocation of purchase price [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Estimated useful life - other intangible assets

'

'

'

'

'

'

'

'

'

'

'40 years 0 months 0 days

'3 years 0 months 0 days

Business acquisition [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Business acquisition - date of acquisition agreement

'

'

'

'

'

'

'

'

14-May-12

'

'

'

Business acquisition - cost of acquired entity per share

'

'

'

'

'

'

'

25

'

'

'

'

Cash paid to acquire entity

'

'

'

'

'

'

1,240,000,000

1,240,000,000

'

'

'

'

Business acquisition - revenues

2,735,500,000

2,947,600,000

8,330,000,000

7,999,800,000

'

'

'

'

'

'

'

'

Business acquisition - operating income

179,300,000

203,600,000

477,300,000

514,500,000

'

'

'

'

'

'

'

'

Business acquisition, pro forma information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

'

8,813,300,000

'

'

Net income including noncontrolling interests

'

'

'

'

'

'

'

'

'

306,900,000

'

'

Net income attributable to URS

'

'

'

'

'

'

'

'

'

234,000,000

'

'

Basic EPS

'

'

'

'

'

'

'

'

'

$3.15

'

'

Diluted EPS

'

'

'

'

'

'

'

'

'

$3.14

'

'

Acquisition-related expense

'

'

'

'

'

'

'

'

'

27,700,000

'

'

Voting interest percentage in unconsolidated joint venture arising from acquisition

'

'

'

'

'

'

'

'

50.00%

'

'

'

Excess fair value over underlying equity interest

'

'

'

'

'

'

128,500,000

'

'

'

'

'

Intangible assets

'

'

'

'

'

'

38,000,000

'

'

'

'

'

Other indebtedness that was repaid

'

'

'

'

'

'

110,300,000

'

'

'

'

'

Amortization of acquired intangible assets

'

'

'

'

$2,000,000

$2,200,000

'

'

$5,800,000

$3,700,000

'

'

GOODWILL_DETAILS

GOODWILL (DETAILS) (USD $)	3 Months Ended	9 Months Ended
In Millions, unless otherwise specified	Sep. 27, 2013	Sep. 27, 2013	Sep. 28, 2012	Dec. 28, 2012	Sep. 30, 2011
	reportingunits	reportingunits			reportingunits
Finite-Lived Intangible Assets [Line Items]	'	'	'	'	'
Balance	'	$692.20	'	'	'
Amortization expense	'	-80.8	-73.8	'	'
Balance	604.1	604.1	'	'	'
Table of estimated future amortization expense of intangible assets [Abstract]	'	'	'	'	'
Total estimated future amortization expense	604.1	604.1	'	'	'
Goodwill [Line Items]	'	'	'	'	'
Goodwill	3,703.30	3,703.30	'	3,721.60	'
Goodwill impairment review [Abstract]	'	'	'	'	'
Reporting unit fair value	8,462	8,462	'	'	'
Reporting unit carrying value	6,238.70	6,238.70	'	'	'
Reporting unit percent fair value above carrying value	35.60%	35.60%	'	'	'
Goodwill impairment loss net of tax	32.9	'	'	'	'
Interim goodwill impairment review (Textuals) [Abstract]	'	'	'	'	'
Number of reporting units whose book value exceeds its fair value	'	'	'	'	5
Number of reporting units included in goodwill impairment review	7	7	'	'	'
Number of future years estimates of economic and market information	'	'10 years 0 months 0 days	'	'	'
Infrastructure & Environment Operating Segment [Member]	'	'	'	'	'
Goodwill [Line Items]	'	'	'	'	'
Goodwill	761	761	'	'	'
Goodwill impairment review [Abstract]	'	'	'	'	'
Reporting unit fair value	2,220	2,220	'	'	'
Reporting unit carrying value	1,509.30	1,509.30	'	'	'
Reporting unit percent fair value above carrying value	47.10%	47.10%	'	'	'
Federal Services Operating Segment [Member]	'	'	'	'	'
Goodwill [Line Items]	'	'	'	'	'
Goodwill	707.3	707.3	'	'	'
Goodwill impairment review [Abstract]	'	'	'	'	'
Reporting unit fair value	1,515	1,515	'	'	'
Reporting unit carrying value	1,011.60	1,011.60	'	'	'
Reporting unit percent fair value above carrying value	49.80%	49.80%	'	'	'
Energy & Construction Operating Segment [Member]	'	'	'	'	'
Goodwill [Line Items]	'	'	'	'	'
Goodwill	1,783.70	1,783.70	'	'	'
Goodwill impairment review [Abstract]	'	'	'	'	'
Reporting unit fair value	3,108	3,108	'	'	'
Reporting unit carrying value	2,351.20	2,351.20	'	'	'
Reporting unit percent fair value above carrying value	32.20%	32.20%	'	'	'
Global Management and Operations Services Group [Member]	'	'	'	'	'
Goodwill [Line Items]	'	'	'	'	'
Goodwill	565.4	565.4	'	'	'
Goodwill impairment review [Abstract]	'	'	'	'	'
Reporting unit fair value	1,375	1,375	'	'	'
Reporting unit carrying value	925.3	925.3	'	'	'
Reporting unit percent fair value above carrying value	48.60%	48.60%	'	'	'
Civil Construction and Mining Group [Member]	'	'	'	'	'
Goodwill [Line Items]	'	'	'	'	'
Goodwill	293.9	293.9	'	'	'
Goodwill impairment review [Abstract]	'	'	'	'	'
Reporting unit fair value	474	474	'	'	'
Reporting unit carrying value	363	363	'	'	'
Reporting unit percent fair value above carrying value	30.60%	30.60%	'	'	'
Industrial/Process Group	'	'	'	'	'
Goodwill [Line Items]	'	'	'	'	'
Goodwill	189.3	189.3	'	'	'
Goodwill impairment review [Abstract]	'	'	'	'	'
Reporting unit fair value	336	336	'	'	'
Reporting unit carrying value	239	239	'	'	'
Reporting unit percent fair value above carrying value	40.60%	40.60%	'	'	'
Power Group	'	'	'	'	'
Goodwill [Line Items]	'	'	'	'	'
Goodwill	735.1	735.1	'	'	'
Goodwill impairment review [Abstract]	'	'	'	'	'
Reporting unit fair value	923	923	'	'	'
Reporting unit carrying value	823.9	823.9	'	'	'
Reporting unit percent fair value above carrying value	12.00%	12.00%	'	'	'
Oil and Gas Operating Segment [Member]	'	'	'	'	'
Goodwill [Line Items]	'	'	'	'	'
Goodwill	451.3	451.3	'	'	'
Goodwill impairment review [Abstract]	'	'	'	'	'
Reporting unit fair value	1,619	1,619	'	'	'
Reporting unit carrying value	$1,366.60	$1,366.60	'	'	'
Reporting unit percent fair value above carrying value	18.50%	18.50%	'	'	'

INDEBTEDNESS_DETAILS

INDEBTEDNESS (DETAILS)

3 Months Ended

9 Months Ended

9 Months Ended

4 Months Ended

9 Months Ended

9 Months Ended

In Millions, unless otherwise specified

Sep. 27, 2013

Sep. 28, 2012

Sep. 27, 2013

Sep. 28, 2012

Dec. 28, 2012

Sep. 27, 2013

Dec. 28, 2012

Sep. 27, 2013

Dec. 28, 2012

Mar. 15, 2012

Sep. 27, 2013

Dec. 28, 2012

Mar. 15, 2012

14-May-12

14-May-12

Sep. 27, 2013

Dec. 28, 2012

Sep. 27, 2013

Dec. 28, 2012

Sep. 27, 2013

Dec. 28, 2012

Sep. 27, 2013

Dec. 28, 2012

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Senior Debt Obligations [Member]

Senior Debt Obligations [Member]

3.85% Senior Notes (net of discount) [Member]

3.85% Senior Notes (net of discount) [Member]

3.85% Senior Notes (net of discount) [Member]

5.00% Senior Notes (net of discount) [Member]

5.00% Senior Notes (net of discount) [Member]

5.00% Senior Notes (net of discount) [Member]

7.50% Canadian Notes (including premium) [Member]

7.50% Canadian Notes (including premium) [Member]

7.50% Canadian Notes (including premium) [Member]

7.50% Canadian Notes (including premium) [Member]

Foreign Line of Credit [Member]

Foreign Line of Credit [Member]

Revolving Line of Credit [Member]

Revolving Line of Credit [Member]

Credit Facility Term Loan [Member]

Credit Facility Term Loan [Member]

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

CAD

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Indebtedness [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Bank term loans, net of debt issuance costs

$652.10

'

$652.10

'

$666.30

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior Notes (net of discount)

'

'

'

'

'

999.1

'

399.6

399.5

'

599.5

599.5

'

'

'

193.8

203.8

'

'

'

'

'

'

Revolving line of credit

38.8

'

38.8

'

100.5

'

'

'

'

'

'

'

'

'

'

'

'

'

'

38.8

100.5

'

'

Other indebtedness

111.4

'

111.4

'

94.7

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total indebtedness

1,995.20

'

1,995.20

'

2,064.30

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding debt

'

'

'

'

'

1,200

1,200

'

'

'

'

'

'

'

'

'

'

'

'

'

'

655

670

Interest rate at period end

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.68%

1.71%

Senior credit facility [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2011 Credit Facility term loan, basis spread on variable rate

'

'

'

'

'

0.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.50%

'

Line of credit facility, maximum borrowing capacity

44.7

'

44.7

'

47.7

'

'

'

'

'

'

'

'

'

'

'

'

50.5

50.8

'

'

'

'

Repayment of revolving line of credit

'

'

987.2

433.6

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Covenant Compliance

'

'

'We were in compliance with the covenants of our Senior Notes and Canadian Notes as of September 27, 2013

'

'

'We were in compliance with the covenants of our 2011 Credit Facility as of September 27, 2013

'

'

'

'

'

'

'

'

'

'.

'

'

'

'

'

'

'

Senior Notes and Canadian Notes [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior Notes, unamortized discount

'

'

'

'

'

0.9

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior Notes, unamortized premium

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

24.3

'

'

'

'

'

'

'

Senior Notes, aggregate principal amount

'

'

'

'

'

'

'

'

'

400

'

'

600

'

'

'

'

'

'

'

'

'

'

Senior Notes, interest rate, stated percentage

'

'

'

'

'

'

'

'

'

3.85%

'

'

5.00%

'

'

'

'

'

'

'

'

'

'

Senior Notes, future indebtedness threshold for guarantors

'

'

'

'

'

100

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business acquisition [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business acquisition - liabilities assumed

'

'

'

'

'

'

'

'

'

'

'

'

'

175

175

'

'

'

'

'

'

'

'

Revolving line of credit [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Letters of credit issued, amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

123.1

'

'

'

Amounts available on our revolving credit facility

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

838.1

'

'

'

Other indebtedness [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Notes payable, five-year loan notes, and foreign credit lines

58.4

'

58.4

'

35.5

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Notes payable, weighted-average interest rate

3.62%

'

3.62%

'

4.68%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Obligations under capital leases

53

'

53

'

59.2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of credit facility, aggregate borrowing capacity

44.7

'

44.7

'

47.7

'

'

'

'

'

'

'

'

'

'

'

'

50.5

50.8

'

'

'

'

Amounts available on our revolving credit facility

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

838.1

'

'

'

Foreign currency gains (losses) on intercompany loans

$1.60

$10.80

$4.20

$4.40

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

INDEBTEDNESS_DETAILS_2

INDEBTEDNESS (DETAILS 2) (USD $)	Sep. 27, 2013	Dec. 28, 2012
In Millions, unless otherwise specified
Total indebtedness [Abstract]	'	'
Total indebtedness	$1,995.20	$2,064.30
Current portion of long-term debt	92.2	71.8
Long-term debt	$1,903	$1,992.50

FAIR_VALUE_OF_DEBT_INSTRUMENTS

FAIR VALUE OF DEBT INSTRUMENTS AND DERIVATIVE INSTRUMENTS (DETAILS)	9 Months Ended			9 Months Ended
	Sep. 28, 2012	Mar. 30, 2012	Mar. 30, 2012	Sep. 27, 2013	Dec. 28, 2012	Sep. 27, 2013	Dec. 28, 2012
	USD ($)	USD ($)	CAD	Senior Notes [Member]	Senior Notes [Member]	Credit Facility Term Loan [Member]	Credit Facility Term Loan [Member]
				USD ($)	USD ($)	USD ($)	USD ($)
Debt Instrument [Line Items]	'	'	'	'	'	'	'
Outstanding debt	'	'	'	$1,200,000,000	$1,200,000,000	$655,000,000	$670,000,000
Fair values of our term loans	'	'	'	'	'	651,700,000	667,300,000
Fair value loans payable valuation techniques	'	'	'	'The fair value of the Senior Notes and Canadian Notes was derived by taking the mid-point of the trading prices from an observable market input (Level 2) in the secondary loan market and multiplying it by the outstanding balance of the notes.	'	'	'
Fair value of our Senior Notes	'	'	'	1,200,000,000	1,200,000,000	'	'
Foreign currency exchange contracts [Abstract]	'	'	'	'	'	'	'
Notional amount of foreign currency forward contract	'	1,250,000,000	1,250,000,000	'	'	'	'
Foreign currency exchange contracts [Line Items]	'	'	'	'	'	'	'
Loss on settlement of foreign currency forward contract	$300,000	'	'	'	'	'	'

BILLINGS_IN_EXCESS_OF_COSTS_AN2

BILLINGS IN EXCESS OF COSTS AND ACCRUED EARNINGS ON CONTRACTS (DETAILS) (USD $)	Sep. 27, 2013	Dec. 28, 2012
In Millions, unless otherwise specified
Components Of Billings In Excess Of Cost And Accrued Earnings On Contracts [Abstract]	'	'
Billings in excess of costs and accrued earnings on contracts	$182.10	$211.70
Project-related legal liabilities and other project-related reserves	31.7	55.2
Advance payments negotiated as a contract condition	5.6	9.8
Normal profit liabilities	0.9	4.8
Estimated losses on uncompleted contracts	4.8	7.6
Total billings in excess of costs and accrued earnings on contracts	$225.10	$289.10

EMPLOYEE_RETIREMENT_AND_POSTRE2

EMPLOYEE RETIREMENT AND POST-RETIREMENT BENEFIT PLANS (DETAILS) (USD $)

Sep. 27, 2013

Dec. 28, 2012

Sep. 27, 2013

Sep. 27, 2013

Sep. 27, 2013

Sep. 28, 2012

Sep. 27, 2013

Sep. 28, 2012

Sep. 27, 2013

Sep. 28, 2012

Sep. 27, 2013

Sep. 28, 2012

Sep. 27, 2013

Sep. 28, 2012

Sep. 27, 2013

Sep. 28, 2012

In Millions, unless otherwise specified

Pension Plans, Defined Benefit [Member]

Pension Plans, Defined Benefit [Member]

Domestic Pension Plans [Member]

Domestic Pension Plans [Member]

Domestic Pension Plans [Member]

Domestic Pension Plans [Member]

Foreign Pension Plans [Member]

Foreign Pension Plans [Member]

Foreign Pension Plans [Member]

Foreign Pension Plans [Member]

Post-retirement Benefit Plans [Member]

Post-retirement Benefit Plans [Member]

Post-retirement Benefit Plans [Member]

Post-retirement Benefit Plans [Member]

Change in benefit obligation:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Service cost

'

'

'

'

$2.20

$2

$6.60

$6

$0.10

$0.10

$0.30

$0.30

'

'

'

'

Interest cost

'

'

'

'

4.4

4.7

13.2

14.1

5.7

5.7

17.1

16.9

0.4

0.5

1.2

1.5

Change in plan assets:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Employer contributions

'

'

6.4

20.3

'

'

'

'

'

'

'

'

0.9

'

2.7

'

Amounts recognized in our Consolidated Balance Sheets consist of:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accrued benefit liability included in other long-term liabilities

278.5

300.9

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net periodic pension costs:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Service cost

'

'

'

'

2.2

2

6.6

6

0.1

0.1

0.3

0.3

'

'

'

'

Interest cost

'

'

'

'

4.4

4.7

13.2

14.1

5.7

5.7

17.1

16.9

0.4

0.5

1.2

1.5

Expected return on plan assets

'

'

'

'

-4.8

-4.4

-14.4

-13.2

-6

-5.6

-18

-16.6

-0.1

-0.1

-0.3

-0.3

Amortization of prior service costs

'

'

'

'

-0.1

-0.7

-0.3

-2.1

'

'

'

'

0.1

'

'

'

Recognized actuarial loss

'

'

'

'

3.9

2.4

11.7

7.2

'

'

'

'

'

'

-0.3

'

Total net periodic pension costs

'

'

'

'

5.6

4

16.8

12

-0.2

0.2

-0.6

0.6

0.4

0.4

1.2

1.2

Other defined benefit plans disclosures (Textuals) [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash contributions

'

'

6.4

20.3

'

'

'

'

'

'

'

'

0.9

'

2.7

'

Estimated future employer contributions in next fiscal year (Textuals) [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Estimated future employer contributions in next fiscal year

'

'

'

$10.30

'

'

'

'

'

'

'

'

'

'

$1.10

'

STOCKHOLDERS_EQUITY_DETAILS

STOCKHOLDERS' EQUITY (DETAILS) (USD $)	3 Months Ended		9 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 27, 2013	Sep. 28, 2012	Sep. 27, 2013	Sep. 28, 2012
Dividends [Line Items]	'	'	'	'
Dividends payable - amount per share	$0.21	$0.20	$0.63	$0.60
Cash dividends declared	'	'	$47.90	$46
Dividends payable - total amount paid	'	'	46.8	29.8
Share-based compensation arrangement by share-based payment award [Line Items]	'	'	'	'
Incremental authorized shares	'	'	1.5	'
Stock-based compensation expense	'	'	'	'
Stock-based compensation expense	13	11.1	35.7	32.5
Stock-based compensation expense included in cost of revenues	9.7	8.6	26.6	24.8
Stock-based compensation expense included in general and administrative expenses	3.3	2.5	9.1	7.7
Equity, class of treasury stock [Line Items]	'	'	'	'
Cost of common stock repurchased	'	'	93.3	40
Employee Stock Purchase Plan [Member]	'	'	'	'
Stock-based compensation expense	'	'	'	'
Stock-based compensation expense	0.2	0.1	0.5	0.4
Restricted Stock Awards And Units [Member]	'	'	'	'
Share-based compensation arrangement by share-based payment award [Line Items]	'	'	'	'
Restricted stock shares available for future grant	1.9	'	1.9	'
Stock-based compensation expense	'	'	'	'
Stock-based compensation expense	12.8	11	35.2	32.1
Restricted Stock Awards (RSAs) [Member]	'	'	'	'
Share-based compensation arrangement by share-based payment award [Line Items]	'	'	'	'
Restricted stock issued	3	'	3	'
Restricted Stock Units (RSUs) [Member]	'	'	'	'
Shares	'	'	'	'
Nonvested restricted stock awards and units - ending balance	1.6	'	1.6	'
Cash dividends for period 1 [Member]	'	'	'	'
Dividends [Line Items]	'	'	'	'
Dividends payable - declaration date	'	'	24-Feb-12	'
Dividends payable - record date	'	'	16-Mar-12	'
Dividends payable - payment date	'	'	6-Apr-12	'
Dividends payable - amount per share	'	'	$0.20	'
Dividends payable - total amount paid	'	'	15.2	'
Cash dividends for period 2 [Member]	'	'	'	'
Dividends [Line Items]	'	'	'	'
Dividends payable - declaration date	'	'	4-May-12	'
Dividends payable - record date	'	'	15-Jun-12	'
Dividends payable - payment date	'	'	6-Jul-12	'
Dividends payable - amount per share	'	'	$0.20	'
Dividends payable - total amount paid	'	'	15.4	'
Cash dividends for period 3 [Member]	'	'	'	'
Dividends [Line Items]	'	'	'	'
Dividends payable - declaration date	'	'	3-Aug-12	'
Dividends payable - record date	'	'	14-Sep-12	'
Dividends payable - payment date	'	'	5-Oct-12	'
Dividends payable - amount per share	'	'	$0.20	'
Dividends payable - total amount paid	'	'	15.4	'
Cash dividends for period 4 [Member]	'	'	'	'
Dividends [Line Items]	'	'	'	'
Dividends payable - declaration date	'	'	2-Nov-12	'
Dividends payable - record date	'	'	14-Dec-12	'
Dividends payable - payment date	'	'	4-Jan-13	'
Dividends payable - amount per share	'	'	$0.20	'
Dividends payable - total amount paid	'	'	15.4	'
Cash dividends for period 5 [Member}	'	'	'	'
Dividends [Line Items]	'	'	'	'
Dividends payable - declaration date	'	'	22-Feb-13	'
Dividends payable - record date	'	'	15-Mar-13	'
Dividends payable - payment date	'	'	5-Apr-13	'
Dividends payable - amount per share	'	'	$0.21	'
Dividends payable - total amount paid	'	'	16	'
Cash dividends for period 6 [Member]	'	'	'	'
Dividends [Line Items]	'	'	'	'
Dividends payable - declaration date	'	'	3-May-13	'
Dividends payable - record date	'	'	14-Jun-13	'
Dividends payable - payment date	'	'	5-Jul-13	'
Dividends payable - amount per share	'	'	$0.21	'
Dividends payable - total amount paid	'	'	16	'
Cash dividends for period 7 [Member]	'	'	'	'
Dividends [Line Items]	'	'	'	'
Dividends payable - declaration date	'	'	2-Aug-13	'
Dividends payable - record date	'	'	13-Sep-13	'
Dividends payable - payment date	'	'	4-Oct-13	'
Dividends payable - amount per share	'	'	$0.21	'
Dividends payable - total amount paid	'	'	16	'
Cash dividends for period 8 [Member]	'	'	'	'
Dividends [Line Items]	'	'	'	'
Dividends payable - declaration date	'	'	1-Nov-13	'
Dividends payable - record date	'	'	13-Dec-13	'
Dividends payable - payment date	'	'	10-Jan-14	'
Dividends payable - amount per share	'	'	$0.21	'
Common Stock [Member]	'	'	'	'
Equity, class of treasury stock [Line Items]	'	'	'	'
Shares of common stock repurchased	'	'	2	1
Common stock repurchase - average price paid per share	'	'	$45.55	$40
Cost of common stock repurchased	'	'	$93.30	$40

SEGMENT_AND_RELATED_INFORMATIO2

SEGMENT AND RELATED INFORMATION (DETAILS) (USD $)	3 Months Ended				9 Months Ended
In Millions, unless otherwise specified	Sep. 27, 2013		Sep. 28, 2012		Sep. 27, 2013		Sep. 28, 2012		Dec. 28, 2012
					reportingunits
Segment additional assets information [Abstract]	'		'		'		'		'
Investments in and advances to unconsolidated joint ventures	$252.80		'		$252.80		'		$278.30
Property and equipment, net	631.1	[1]	'		631.1	[1]	'		687.5	[1]
Total assets	9,090.30		'		9,090.30		'		9,261	[2]
Segment additional income statement information [Abstract]	'		'		'		'		'
Revenues	2,735.50		2,947.60		8,330		7,999.80		'
Equity in income (loss) of unconsolidated joint ventures	17.1		31.1		59.1		76.8		'
URS operating income (loss)	152.7	[3]	182.5	[3]	421.4	[3]	442.1	[3]	'
Operating income (loss)	179.3		203.6		477.3		514.5		'
Depreciation and amortization	62.9		72.5		196.5		165.5		'
Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]	'		'		'		'		'
Revenues	2,735.50		2,947.60		8,330		7,999.80		'
Segment reporting disclosure (Textuals) [Abstract]	'		'		'		'		'
Number of operating segments	'		'		4		'		'
Description of reportable segments	'		'		'We operate our business through the following four segments: Infrastructure & Environment Division provides program management, planning, design, engineering, construction and construction management, operations and maintenance, and decommissioning and closure services to the U.S. federal government, state and local government agencies, and private sector clients in the U.S. and internationally. Federal Services Division provides services to various U.S. federal government agencies, primarily the Department of Defense. These services include program management, planning, design and engineering, systems engineering and technical assistance, construction and construction management, operations and maintenance, IT services, and decommissioning and closure. Energy & Construction Division provides program management, planning, design, engineering, construction and construction management, operations and maintenance, and decommissioning and closure services to the U.S. federal government, state and local government agencies, and private sector clients in the U.S. and internationally. Oil & Gas Division provides oilfield services, including rig transportation and fluid hauling services; oil and gas production services, including mechanical, electrical and instrumentation services; facility and pipeline construction; module fabrication; and maintenance services for the oil and gas industry in the U.S. and Canada.		'		'
US Army [Member]	'		'		'		'		'
Segment additional income statement information [Abstract]	'		'		'		'		'
Revenues	318.5	[4]	390.4	[4]	1,078.50	[4]	1,275.80	[4]	'
Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]	'		'		'		'		'
Revenues	318.5	[4]	390.4	[4]	1,078.50	[4]	1,275.80	[4]	'
US Army [Member] | Sales [Member]	'		'		'		'		'
Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]	'		'		'		'		'
Percentage of revenues from major customers	12.00%	[4]	13.00%	[4]	13.00%	[4]	16.00%	[4]	'
DOE [Member]	'		'		'		'		'
Segment additional income statement information [Abstract]	'		'		'		'		'
Revenues	237		253.7		661.5		763.4		'
Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]	'		'		'		'		'
Revenues	237		253.7		661.5		763.4		'
DOE [Member] | Sales [Member]	'		'		'		'		'
Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]	'		'		'		'		'
Percentage of revenues from major customers	9.00%		9.00%		8.00%		10.00%		'
Federal Market Sector [Member] | Sales [Member]	'		'		'		'		'
Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]	'		'		'		'		'
Percentage of revenues from major customers	34.00%		37.00%		35.00%		43.00%		'
Infrastructure and Environment [Member]	'		'		'		'		'
Segment additional assets information [Abstract]	'		'		'		'		'
Investments in and advances to unconsolidated joint ventures	7.2		'		7.2		'		8.1
Property and equipment, net	138.4		'		138.4		'		141
Total assets	2,174.20		'		2,174.20		'		2,267.60	[2]
Segment additional income statement information [Abstract]	'		'		'		'		'
Revenues	922.3		920.7		2,833.20		2,851.10		'
Equity in income (loss) of unconsolidated joint ventures	-0.9		3.3		0.1		3.1		'
URS operating income (loss)	58.5	[3]	66.5	[3]	160.7	[3]	174.1	[3]	'
Operating income (loss)	59.3		67.1		162.1		175.7		'
Depreciation and amortization	12.4		13.1		37.3		41.8		'
Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]	'		'		'		'		'
Revenues	922.3		920.7		2,833.20		2,851.10		'
Infrastructure and Environment [Member] | US Army [Member]	'		'		'		'		'
Segment additional income statement information [Abstract]	'		'		'		'		'
Revenues	28.4	[4]	7	[4]	93	[4]	94.4	[4]	'
Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]	'		'		'		'		'
Revenues	28.4	[4]	7	[4]	93	[4]	94.4	[4]	'
Infrastructure and Environment [Member] | DOE [Member]	'		'		'		'		'
Segment additional income statement information [Abstract]	'		'		'		'		'
Revenues	1		1		3.1		4.4		'
Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]	'		'		'		'		'
Revenues	1		1		3.1		4.4		'
Federal Services [Member]	'		'		'		'		'
Segment additional assets information [Abstract]	'		'		'		'		'
Investments in and advances to unconsolidated joint ventures	3.4		'		3.4		'		5.7
Property and equipment, net	39		'		39		'		36.6
Total assets	1,552.40		'		1,552.40		'		1,642.80	[2]
Segment additional income statement information [Abstract]	'		'		'		'		'
Revenues	538.9		682.8		1,776.30		2,118.10		'
Equity in income (loss) of unconsolidated joint ventures	1.4		1.5		4.7		4.8		'
URS operating income (loss)	57.6	[3]	64.8	[3]	225.3	[3]	217.5	[3]	'
Operating income (loss)	57.6		64.8		225.3		217.5		'
Depreciation and amortization	8.7		8.5		26.8		27.2		'
Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]	'		'		'		'		'
Revenues	538.9		682.8		1,776.30		2,118.10		'
Federal Services [Member] | US Army [Member]	'		'		'		'		'
Segment additional income statement information [Abstract]	'		'		'		'		'
Revenues	244.4	[4]	347	[4]	886.6	[4]	1,094.50	[4]	'
Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]	'		'		'		'		'
Revenues	244.4	[4]	347	[4]	886.6	[4]	1,094.50	[4]	'
Federal Services [Member] | DOE [Member]	'		'		'		'		'
Segment additional income statement information [Abstract]	'		'		'		'		'
Revenues	4.6		4.1		15		17.2		'
Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]	'		'		'		'		'
Revenues	4.6		4.1		15		17.2		'
Energy and Construction [Member]	'		'		'		'		'
Segment additional assets information [Abstract]	'		'		'		'		'
Investments in and advances to unconsolidated joint ventures	112.1		'		112.1		'		124.5
Property and equipment, net	58.3		'		58.3		'		60.1
Total assets	3,272.90		'		3,272.90		'		3,253.90	[2]
Segment additional income statement information [Abstract]	'		'		'		'		'
Revenues	775.5		781.5		2,168.70		2,285.10		'
Equity in income (loss) of unconsolidated joint ventures	17.6		24.1		54.2		66		'
URS operating income (loss)	31.5	[3]	43.7	[3]	65.8	[3]	96.2	[3]	'
Operating income (loss)	57.4		64.6		121.1		167.5		'
Depreciation and amortization	10.6		13		33.9		36.8		'
Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]	'		'		'		'		'
Revenues	775.5		781.5		2,168.70		2,285.10		'
Energy and Construction [Member] | US Army [Member]	'		'		'		'		'
Segment additional income statement information [Abstract]	'		'		'		'		'
Revenues	45.7	[4]	36.4	[4]	98.9	[4]	86.9	[4]	'
Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]	'		'		'		'		'
Revenues	45.7	[4]	36.4	[4]	98.9	[4]	86.9	[4]	'
Energy and Construction [Member] | DOE [Member]	'		'		'		'		'
Segment additional income statement information [Abstract]	'		'		'		'		'
Revenues	231.4		248.6		643.4		741.8		'
Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]	'		'		'		'		'
Revenues	231.4		248.6		643.4		741.8		'
Oil and Gas [Member]	'		'		'		'		'
Segment additional assets information [Abstract]	'		'		'		'		'
Investments in and advances to unconsolidated joint ventures	130.1		'		130.1		'		140
Property and equipment, net	365.9		'		365.9		'		422.9
Total assets	1,783.30		'		1,783.30		'		1,904.40	[2]
Segment additional income statement information [Abstract]	'		'		'		'		'
Revenues	532.6	[5]	592.2	[5]	1,672.30	[5]	869.7	[5]	'
Equity in income (loss) of unconsolidated joint ventures	-1	[5]	2.2	[5]	0.1	[5]	2.9	[5]	'
URS operating income (loss)	19.4	[3],[5]	29.3	[3],[5]	29.5	[3],[5]	32.4	[3],[5]	'
Operating income (loss)	19.3	[5]	28.9	[5]	28.7	[5]	31.9	[5]	'
Depreciation and amortization	29	[5]	36.2	[5]	92.1	[5]	54.9	[5]	'
Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]	'		'		'		'		'
Revenues	532.6	[5]	592.2	[5]	1,672.30	[5]	869.7	[5]	'
Corporate [Member]	'		'		'		'		'
Segment additional assets information [Abstract]	'		'		'		'		'
Property and equipment, net	29.5		'		29.5		'		26.9
Total assets	307.5		'		307.5		'		192.3	[2]
Segment additional income statement information [Abstract]	'		'		'		'		'
URS operating income (loss)	-14.3	[3],[6]	-21.8	[3],[6]	-59.9	[3],[6]	-78.1	[3],[6]	'
Operating income (loss)	-14.3	[6]	-21.8	[6]	-59.9	[6]	-78.1	[6]	'
Depreciation and amortization	2.2		1.7		6.4	[6]	4.8		'
Inter-segment Eliminations and Other [Member]	'		'		'		'		'
Segment additional income statement information [Abstract]	'		'		'		'		'
Revenues	-33.8		-29.6		-120.5		-124.2		'
Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]	'		'		'		'		'
Revenues	($33.80)		($29.60)		($120.50)		($124.20)		'
[1]	The unamortized computer software costs were $78.4 million and $71.1 million, respectively, as of September 27, 2013 and December 28, 2012.
[2]	Total assets by segments for the year ended December 28, 2012 were restated to correct an error related to prior year goodwill impairment charges. See Note 1, bBusiness, Basis of Presentation, and Accounting Policies.b
[3]	We are providing information regarding URS operating income (loss) by segment because management uses this information to assess performance and make decisions about resource allocation. URS operating income is defined as segment operating income after reductions for pre-tax noncontrolling interests.
[4]	The U.S. Army includes U.S. Army Corps of Engineers.
[5]	The operating results of Flint have been included in our consolidated results since the acquisition on May 14, 2012.
[6]	Corporate includes expenses related to corporate functions and acquisition-related expenses.

SEGMENT_AND_RELATED_INFORMATIO3

SEGMENT AND RELATED INFORMATION (DETAILS 2) (USD $)	3 Months Ended				9 Months Ended
In Millions, unless otherwise specified	Sep. 27, 2013		Sep. 28, 2012		Sep. 27, 2013		Sep. 28, 2012
Segment reporting other significant reconciling item [Line Items]	'		'		'		'
URS operating income (loss)	$152.70	[1]	$182.50	[1]	$421.40	[1]	$442.10	[1]
Noncontrolling interests	26.6		21.1		55.9		72.4
Operating income (loss)	179.3		203.6		477.3		514.5
Infrastructure and Environment [Member]	'		'		'		'
Segment reporting other significant reconciling item [Line Items]	'		'		'		'
URS operating income (loss)	58.5	[1]	66.5	[1]	160.7	[1]	174.1	[1]
Noncontrolling interests	0.8		0.6		1.4		1.6
Operating income (loss)	59.3		67.1		162.1		175.7
Federal Services [Member]	'		'		'		'
Segment reporting other significant reconciling item [Line Items]	'		'		'		'
URS operating income (loss)	57.6	[1]	64.8	[1]	225.3	[1]	217.5	[1]
Operating income (loss)	57.6		64.8		225.3		217.5
Energy and Construction [Member]	'		'		'		'
Segment reporting other significant reconciling item [Line Items]	'		'		'		'
URS operating income (loss)	31.5	[1]	43.7	[1]	65.8	[1]	96.2	[1]
Noncontrolling interests	25.9		20.9		55.3		71.3
Operating income (loss)	57.4		64.6		121.1		167.5
Oil and Gas [Member]	'		'		'		'
Segment reporting other significant reconciling item [Line Items]	'		'		'		'
URS operating income (loss)	19.4	[1],[2]	29.3	[1],[2]	29.5	[1],[2]	32.4	[1],[2]
Noncontrolling interests	-0.1		-0.4		-0.8		-0.5
Operating income (loss)	19.3	[2]	28.9	[2]	28.7	[2]	31.9	[2]
Corporate [Member]	'		'		'		'
Segment reporting other significant reconciling item [Line Items]	'		'		'		'
URS operating income (loss)	-14.3	[1],[3]	-21.8	[1],[3]	-59.9	[1],[3]	-78.1	[1],[3]
Operating income (loss)	($14.30)	[3]	($21.80)	[3]	($59.90)	[3]	($78.10)	[3]
[1]	We are providing information regarding URS operating income (loss) by segment because management uses this information to assess performance and make decisions about resource allocation. URS operating income is defined as segment operating income after reductions for pre-tax noncontrolling interests.
[2]	The operating results of Flint have been included in our consolidated results since the acquisition on May 14, 2012.
[3]	Corporate includes expenses related to corporate functions and acquisition-related expenses.

SEGMENT_AND_RELATED_INFORMATIO4

SEGMENT AND RELATED INFORMATION (DETAILS 3) (USD $)	3 Months Ended			9 Months Ended
In Millions, unless otherwise specified	Sep. 27, 2013		Sep. 28, 2012	Sep. 27, 2013		Sep. 28, 2012	Dec. 28, 2012
Revenues from external customers and long-lived assets [Line Items]	'		'	'		'	'
Revenues	$2,735.50		$2,947.60	$8,330		$7,999.80	'
Property and equipment, net	$631.10	[1]	'	$631.10	[1]	'	$687.50	[1]
[1]	The unamortized computer software costs were $78.4 million and $71.1 million, respectively, as of September 27, 2013 and December 28, 2012.

COMMITMENTS_AND_CONTINGENCIES_

COMMITMENTS AND CONTINGENCIES (DETAILS)

Sep. 27, 2013

Sep. 27, 2013

Apr. 12, 2013

Sep. 27, 2013

Sep. 27, 2013

Jun. 14, 2013

Sep. 27, 2013

Sep. 27, 2013

Sep. 27, 2013

Aug. 03, 2012

Sep. 27, 2013

Sep. 27, 2013

In Millions, unless otherwise specified

USD ($)

USAID Egyptian Projects [Member]

New Orleans Levee Failure Class Action Litigation [Member]

New Orleans Levee Failure Class Action Litigation [Member]

Canadian Pipeline Contract [Member]

UK Joint Venture [Member]

UK Joint Venture [Member]

DOE Deactivation, Demolition and Removal Project [Member]

Bolivian Mine Services Agreement [Member]

Bolivian Mine Services Agreement [Member]

Indemnification of Joint Venture Partner [Member]

Guarantee of Foreign Credit Facilities and Bank Guarantee Lines [Member]

USD ($)

lawsuits

USD ($)

CAD

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

lawsuits

Guarantee Obligations [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Guarantee obligations current carrying value

'

'

'

'

'

'

'

'

'

'

$25

'

Bank guarantee outstanding under foreign credit facilities and other banking arrangements

'

'

'

'

'

'

'

'

'

'

'

34.3

Loss Contingencies [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Loss contingency allegations

'

'In November 2004, the federal government filed an action in the United States District Court for the District of Idaho against WGI Delaware, Contrack International, Inc., and MISR Sons Development S.A.E., an Egyptian construction company, asserting violations under the Federal False Claims Act, the Federal Foreign Assistance Act of 1961, as well as common law theories of payment by mistake and unjust enrichment.

'

'Plaintiffs allege that defendants were negligent in their design, construction and/or maintenance of the New Orleans levees. Specifically, as to WGI Ohio, plaintiffs allege that work WGI Ohio performed adjacent to the Industrial Canal damaged the levee and floodwall, causing or contributing to breaches and flooding.

'In January 2010, a pipeline owner filed an action in the Court of Queen’s Bench of Alberta, Canada against Flint, a company we acquired in May 2012, as well as against a number of other defendants, alleging that the defendants negligently provided pipe coating and insulation system services, engineering, design services, construction services, and other work, causing damage to and abandonment of the line. The pipeline owner alleges it has suffered approximately C$85.0 million in damages in connection with the abandonment and replacement of the pipeline.

'

'

'

'The mine owner disputed the fair market value of mining equipment it was required to repurchase under the terms of the mine services agreement. Subsequently, on November 16, 2010, Washington Group Bolivia received a formal claim asserting breaches of contractual obligations and warranties, including the failure to adhere to the requisite professional standard of care while performing the mine services agreement.

'

'

'

Loss contingency damages sought

'

'The federal government seeks damages and civil penalties (including doubling and trebling of damages) for violations of the statutes as well as a refund of the approximately $373.0 million paid to WGI Delaware under the specified contracts.

'

'Fifty-nine personal injury and property damage class action lawsuits were filed in Louisiana State and federal court against several defendants, including WGI Ohio, seeking $200.0 billion in damages plus attorneys’ fees and costs. Plaintiffs are residents and property owners who claim to have incurred damages from the breach and failure of the hurricane protection levees and floodwalls in the wake of Hurricane Katrina. All 59 lawsuits were pleaded as class actions but none have yet been certified as class actions. Along with WGI Ohio, the U.S. Army Corps of Engineers, the Board for the Orleans Levee District, and its insurer, St. Paul Fire and Marine Insurance Company were also named as defendants. At this time WGI Ohio and the Army Corps of Engineers are the remaining defendants. These 59 lawsuits, along with other hurricane-related cases not involving WGI Ohio, were consolidated in the United States District Court for the Eastern District of Louisiana (“District Court”).

'The pipeline owner alleges it has suffered approximately C$85.0 million in damages in connection with the abandonment and replacement of the pipeline

'

'

'

'On June 17, 2011, Washington Group Bolivia received a formal demand for arbitration pursuant to the Rules of Arbitration of the International Chamber of Commerce (“ICC”) asserting claims up to $52.6 million.

'

'

'

Loss contingency actions taken by court arbitrator or mediator

'

'On April 24, 2012, the Bankruptcy Court ruled that the bulk of the federal government’s claims under the False Claims and the Federal Foreign Assistance Acts are not barred. On November 7, 2012, WGI Delaware appealed the Bankruptcy Court’s decision to the Ninth Circuit Bankruptcy Appellate Panel. On August 2, 2013, the Appellate Panel affirmed the Bankruptcy Court’s decision. On September 26, 2013, WGI Delaware appealed the Appellate Panel’s decision to the United States Ninth Circuit Court of Appeals.

'

'WGI Ohio filed a motion for summary judgment, seeking dismissal on grounds that government contractors are immune from liability. On December 15, 2008, the District Court granted WGI Ohio’s motion for summary judgment, but several plaintiffs appealed that decision to the United States Fifth Circuit Court of Appeals on April 27, 2009. On September 14, 2010, the Court of Appeals reversed the District Court’s summary judgment decision and WGI Ohio’s dismissal, and remanded the case back to the District Court for further litigation. On August 1, 2011, the District Court decided that the government contractor immunity defense would not be available to WGI Ohio at trial, but would be an issue for appeal. Five of the cases were tried in District Court from September 12, 2012 through October 3, 2012. On April 12, 2013, the District Court ruled in favor of WGI Ohio and the Army Corps of Engineers, finding that the five plaintiffs failed to prove that WGI Ohio’s or the Army Corps of Engineers’ actions caused the failure of the Industrial Canal floodwall during Hurricane Katrina

'

'

'On June 14, 2013, the Crown Court issued a fine equivalent to approximately $1.2 million. On July 9, 2013, our U.K. joint venture appealed the Crown Court’s decision to the Court of Appeal Criminal Division.

'

'On August 9, 2013, a $10.5 million ICC arbitration tribunal award was issued against Washington Group Bolivia and, on September 5, 2013, the mine owner petitioned the United States District Court of Colorado to confirm the ICC arbitration award.

'

'

'

Loss contingency actions taken by plaintiff and defendant

'

'USAID Egyptian Projects: In March 2003, Washington Group International, Inc., a Delaware company (“WGI Delaware”), our wholly owned subsidiary, was notified by the Department of Justice that the federal government was considering civil litigation against WGI Delaware for potential violations of the U.S. Agency for International Development (“USAID”) source, origin, and nationality regulations in connection with five of WGI Delaware’s USAID-financed host-country projects located in Egypt beginning in the early 1990s. In November 2004, the federal government filed an action in the United States District Court for the District of Idaho against WGI Delaware, Contrack International, Inc., and MISR Sons Development S.A.E., an Egyptian construction company, asserting violations under the Federal False Claims Act, the Federal Foreign Assistance Act of 1961, as well as common law theories of payment by mistake and unjust enrichment. The federal government seeks damages and civil penalties (including doubling and trebling of damages) for violations of the statutes as well as a refund of the approximately $373.0 million paid to WGI Delaware under the specified contracts. WGI Delaware has denied any liability in the action and contests the federal government’s damage allegations and its entitlement to recovery. All USAID projects under the contracts have been completed and are fully operational. In March 2005, WGI Delaware filed motions in Idaho District Court and the United States Bankruptcy Court in Nevada contending that the federal government’s Idaho action is barred under the plan of reorganization approved by the Bankruptcy Court in 2002 when WGI Delaware emerged from bankruptcy protection. In 2006, the Idaho action was stayed pending the bankruptcy-related proceedings. On April 24, 2012, the Bankruptcy Court ruled that the bulk of the federal government’s claims under the False Claims and the Federal Foreign Assistance Acts are not barred. On November 7, 2012, WGI Delaware appealed the Bankruptcy Court’s decision to the Ninth Circuit Bankruptcy Appellate Panel. On August 2, 2013, the Appellate Panel affirmed the Bankruptcy Court’s decision. On September 26, 2013, WGI Delaware appealed the Appellate Panel’s decision to the United States Ninth Circuit Court of Appeals. WGI Delaware intends to continue to defend this matter vigorously; however, WGI Delaware cannot provide assurance that it will be successful in these efforts. The potential range of loss and the resolution of these matters cannot be determined at this time primarily due to the very limited factual record that exists in light of the limited discovery that has been conducted to-date in the Idaho litigation; the fact that the matter involves unique and complex bankruptcy, international, and federal regulatory legal issues; the uncertainty concerning legal theories and their potential resolution by the courts; and the overall age of this matter, as well as a number of additional factors. Accordingly, no amounts have been accrued for the federal government claims in the Idaho action. In March 2005, WGI Delaware filed motions in Idaho District Court and the United States Bankruptcy Court in Nevada contending that the federal government’s Idaho action is barred under the plan of reorganization approved by the Bankruptcy Court in 2002 when WGI Delaware emerged from bankruptcy protection.

'

'New Orleans Levee Failure Class Action Litigation: From July 1999 through May 2005, Washington Group International, Inc., an Ohio company (“WGI Ohio”), a wholly owned subsidiary acquired by us on November 15, 2007, performed demolition, site preparation, and environmental remediation services for the U.S. Army Corps of Engineers on the east bank of the Inner Harbor Navigation Canal (the “Industrial Canal”) in New Orleans, Louisiana. On August 29, 2005, Hurricane Katrina devastated New Orleans. The storm surge created by the hurricane overtopped the Industrial Canal levee and floodwall, flooding the Lower Ninth Ward and other parts of the city. Fifty-nine personal injury and property damage class action lawsuits were filed in Louisiana State and federal court against several defendants, including WGI Ohio, seeking $200.0 billion in damages plus attorneys’ fees and costs. Plaintiffs are residents and property owners who claim to have incurred damages from the breach and failure of the hurricane protection levees and floodwalls in the wake of Hurricane Katrina. All 59 lawsuits were pleaded as class actions but none have yet been certified as class actions. Along with WGI Ohio, the U.S. Army Corps of Engineers, the Board for the Orleans Levee District, and its insurer, St. Paul Fire and Marine Insurance Company were also named as defendants. At this time WGI Ohio and the Army Corps of Engineers are the remaining defendants. These 59 lawsuits, along with other hurricane-related cases not involving WGI Ohio, were consolidated in the United States District Court for the Eastern District of Louisiana (“District Court”). Plaintiffs allege that defendants were negligent in their design, construction and/or maintenance of the New Orleans levees. Specifically, as to WGI Ohio, plaintiffs allege that work WGI Ohio performed adjacent to the Industrial Canal damaged the levee and floodwall, causing or contributing to breaches and flooding. WGI Ohio did not design, construct, repair or maintain any of the levees or the floodwalls that failed during or after Hurricane Katrina. Rather, WGI Ohio performed work adjacent to the Industrial Canal as a contractor for the federal government. WGI Ohio filed a motion for summary judgment, seeking dismissal on grounds that government contractors are immune from liability. On December 15, 2008, the District Court granted WGI Ohio’s motion for summary judgment, but several plaintiffs appealed that decision to the United States Fifth Circuit Court of Appeals on April 27, 2009. On September 14, 2010, the Court of Appeals reversed the District Court’s summary judgment decision and WGI Ohio’s dismissal, and remanded the case back to the District Court for further litigation. On August 1, 2011, the District Court decided that the government contractor immunity defense would not be available to WGI Ohio at trial, but would be an issue for appeal. Five of the cases were tried in District Court from September 12, 2012 through October 3, 2012. On April 12, 2013, the District Court ruled in favor of WGI Ohio and the Army Corps of Engineers, finding that the five plaintiffs failed to prove that WGI Ohio’s or the Army Corps of Engineers’ actions caused the failure of the Industrial Canal floodwall during Hurricane Katrina. On July 1, 2013, WGI Ohio filed a motion for summary judgment in District Court to dismiss all other related cases as a result of the District Court’s April 2013 decision. WGI Ohio intends to continue to defend these matters vigorously; however, WGI Ohio cannot provide assurance that it will be successful in these efforts. The potential range of loss and the resolution of these matters cannot be determined at this time primarily due to the likelihood of an appeal, the unknown number of individual plaintiffs who are actually asserting claims against WGI Ohio; the uncertainty regarding the nature and amount of each individual plaintiff’s damage claims; uncertainty concerning legal theories and factual bases that plaintiffs may present and their resolution by courts or regulators; and uncertainty about the plaintiffs’ claims, if any, that might survive certain key motions of our affiliate, as well as a number of additional factors. On July 1, 2013, WGI Ohio filed a motion for summary judgment in District Court to dismiss all other related cases as a result of the District Court’s April 2013 decision.

'Canadian Pipeline Contract: In January 2010, a pipeline owner filed an action in the Court of Queen’s Bench of Alberta, Canada against Flint, a company we acquired in May 2012, as well as against a number of other defendants, alleging that the defendants negligently provided pipe coating and insulation system services, engineering, design services, construction services, and other work, causing damage to and abandonment of the line. The pipeline owner alleges it has suffered approximately C$85.0 million in damages in connection with the abandonment and replacement of the pipeline. Flint was the construction contractor on the pipeline project. Other defendants were responsible for engineering and design-services and for specifying and providing the actual pipe, insulation and coating materials used in the line. In January 2011, the pipeline owner served a Statement of Claim on Flint and, in September 2011, Flint filed a Statement of Defense denying that the damages to the coating system of the pipeline were caused by any negligence or breach of contract of Flint. Flint believes the damages were caused or contributed to by the negligence of one or more of the co-defendants and/or by the negligent operation of the pipeline owner. Flint intends to continue to defend this matter vigorously; however, it cannot provide assurance that it will be successful, in whole or in part, in these efforts. The potential range of loss and the resolution of this matter cannot be determined at this time primarily due to the early stage of the discovery; the substantial uncertainty regarding the actual cause of the damage to or loss of the line; the nature and amount of each individual damage claim against the various defendants; and the uncertainty concerning legal theories and factual bases that the customer may present against all or some of the defendants.

'

'U.K. Joint Venture: On April 12, 2010, one of our U.K. joint ventures sent several bags of low level non-exempt radioactive waste to a waste disposal facility that was not licensed to handle such waste. On November 15, 2012, the U.K. Environment Agency and the U.K. Department for Transport initiated environmental regulatory proceedings against our U.K. joint venture in the Workington Magistrates’ Court under the U.K. Environmental Permitting Regulations 2010, the Radioactive Substances Act 1993, the Carriage of Dangerous Goods and the use of Transportable Pressure Equipment Regulations 2009. On February 7, 2013, our U.K. joint venture entered a plea of guilty before the Magistrates’ Court and the matter was referred to the Carlisle Crown Court (the “Crown Court”) for sentencing. On June 14, 2013, the Crown Court issued a fine equivalent to approximately $1.2 million. On July 9, 2013, our U.K. joint venture appealed the Crown Court’s decision to the Court of Appeal Criminal Division.

'DOE Deactivation, Demolition, and Removal Project: WGI Ohio executed a cost-reimbursable task order with the DOE in 2007 to provide deactivation, demolition and removal services at a New York State project site that, during 2010, experienced contamination and performance issues. In February 2011, WGI Ohio and the DOE executed a Task Order Modification that changed some cost-reimbursable contract provisions to at-risk. The Task Order Modification, including subsequent amendments, requires the DOE to pay all project costs up to $105.9 million, requires WGI Ohio and the DOE to equally share in all project costs incurred from $105.9 million to $145.9 million, and requires WGI Ohio to pay all project costs exceeding $145.9 million. In addition, in September 2011, WGI Ohio voluntarily paid a civil penalty related to the contamination incident. Through September 27, 2013, WGI Ohio has incurred total project costs of $252.3 million. Due to unanticipated requirements and permitting delays by federal and state agencies, as well as delays and related ground stabilization activities caused by Hurricane Irene, WGI Ohio has been required to perform work outside the scope of the Task Order Modification. Based on the changes and delays, requests for equitable adjustment (“REA”) amounting to $47.1 million and proposals related to the hurricane-caused impacts and other directed changes in the amount of $118.0 million were initially submitted to the DOE for approval. Through September 27, 2013, the DOE has approved one of the REAs for $0.9 million and has authorized $31.4 million of additional funding primarily related to the hurricane-caused impacts. Because WGI Ohio and the DOE were unsuccessful in settling the REAs and proposals, during 2013, WGI Ohio submitted several certified claims against the DOE pursuant to the Contracts Disputes Acts seeking recovery of $112.5 million of the above unfunded REA and proposal costs incurred through April 2013 and $5.0 million in fees on the expanded work scope. As of September 27, 2013, WGI Ohio has recorded $73.5 million in accounts receivable for project costs incurred to date in excess of the DOE contracted amount that may not be collected until the claims are resolved. The final project completion costs are not currently estimable due to continuing delays in permitting, other delays, and approval of a final project plan. WGI Ohio can provide no certainty that it will recover the $112.5 million in submitted DOE claims for costs incurred through April 2013 related to REAs, hurricane-caused work or other directed changes, as well as any other project costs after April 2013 that WGI Ohio is obligated to incur to finalize and complete this project including the accounts receivable, any of which could negatively impact URS’ future results of operations.

'Bolivian Mine Services Agreement: In 2009, a mine service agreement performed by our wholly owned subsidiary, Washington Group Bolivia, was unilaterally terminated for convenience by the mine owner. The mine owner disputed the fair market value of mining equipment it was required to repurchase under the terms of the mine services agreement. Subsequently, on November 16, 2010, Washington Group Bolivia received a formal claim asserting breaches of contractual obligations and warranties, including the failure to adhere to the requisite professional standard of care while performing the mine services agreement. On June 17, 2011, Washington Group Bolivia received a formal demand for arbitration pursuant to the Rules of Arbitration of the International Chamber of Commerce (“ICC”) asserting claims up to $52.6 million. Washington Group Bolivia brought a $50 million counterclaim on August 3, 2012 against the mine owner asserting claims of wrongful termination and lost productivity. Arbitration on the mine owner’s claims and Washington Group Bolivia’s counterclaims commenced before the ICC. In the course of the arbitration proceedings, the mine owner has reduced its claims to approximately $32.2 million, while Washington Group Bolivia has refined its counterclaim amount to not more than $62.9 million. On August 9, 2013, a $10.5 million ICC arbitration tribunal award was issued against Washington Group Bolivia and, on September 5, 2013, the mine owner petitioned the United States District Court of Colorado to confirm the ICC arbitration award. On October 1, 2013, Washington Group Bolivia filed a cross motion to partially vacate the arbitration award in the District Court of Colorado. Washington Group Bolivia intends to continue to contest this matter vigorously; however, we cannot provide assurance that it will be successful in these efforts. We have accrued an estimated probable loss of $10.5 million related to this matter; however, we believe the loss may be recoverable under our insurance program.  Washington Group Bolivia brought a $50 million counterclaim on August 3, 2012 against the mine owner asserting claims of wrongful termination and lost productivity. Arbitration on the mine owner’s claims and Washington Group Bolivia’s counterclaims commenced before the ICC. In the course of the arbitration proceedings, the mine owner has reduced its claims to approximately $32.2 million, while Washington Group Bolivia has refined its counterclaim amount to not more than $62.9 million. On August 9, 2013, a $10.5 million ICC arbitration tribunal award was issued against Washington Group Bolivia and, on September 5, 2013, the mine owner petitioned the United States District Court of Colorado to confirm the ICC arbitration award. On October 1, 2013, Washington Group Bolivia filed a cross motion to partially vacate the arbitration award in the District Court of Colorado. On October 1, 2013, Washington Group Bolivia filed a cross motion to partially vacate the arbitration award in the District Court of Colorado.

'

'

'

Total damages against all defendants claimed in the legal matter

'

373

'

200,000

85

1.2

'

'

52.6

'

'

'

Amount of counterclaim

'

'

'

'

'

'

'

'

'

50

'

'

Task order modification costs threshold below to be paid by customer

'

'

'

'

'

'

'

105.9

'

'

'

'

Task order modification costs to be paid equally by customer and company - range minimum

'

'

'

'

'

'

'

105.9

'

'

'

'

Task order modification costs to be paid equally by customer and company - range maximum

'

'

'

'

'

'

'

145.9

'

'

'

'

Task order modification costs threshold above to be paid by Company

'

'

'

'

'

'

'

145.9

'

'

'

'

Requests for equitable adjustment

'

'

'

'

'

'

'

47.1

'

'

'

'

Project reimbursement request arising from acts of nature

'

'

'

'

'

'

'

118

'

'

'

'

Total project costs

'

'

'

'

'

'

'

252.3

'

'

'

'

Loss contingency, lawsuits filed, number

'

'

'

59

'

'

'

'

'

'

'

'

Loss contingency, number of settled and dismissed claims

'

'

5

'

'

'

'

'

'

'

'

'

Authorized project reimbursements arising from acts of nature

'

'

'

'

'

'

'

31.4

'

'

'

'

Loss contingency revised value of damages sought

'

'

'

'

'

'

'

'

32.2

'

'

'

Maximum amount of counterclaim

'

'

'

'

'

'

'

'

62.9

'

'

'

Claim for unfunded requests for equitable adjustment (REA)

'

'

'

'

'

'

'

112.5

'

'

'

'

Claim for fee

'

'

'

'

'

'

'

5

'

'

'

'

Approved requests for equitable adjustment

'

'

'

'

'

'

'

0.9

'

'

'

'

Accounts receivable

73.5

'

'

'

'

'

'

73.5

'

'

'

'

Loss contingency, damages awarded value

'

'

'

'

'

'

'

'

10.5

'

'

'

Loss contingency, accrual provision

'

'

'

'

'

'

'

'

$10.50

'

'

'

RECLASSIFICATIONS_OUT_OF_ACCUM2

RECLASSIFICATIONS OUT OF ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (DETAILS) (USD $)

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

In Millions, unless otherwise specified

Sep. 27, 2013

Sep. 27, 2013

Sep. 27, 2013

Sep. 28, 2012

Sep. 27, 2013

Sep. 28, 2012

Sep. 27, 2013

Sep. 28, 2012

Sep. 27, 2013

Sep. 28, 2012

Sep. 27, 2013

Sep. 27, 2013

Sep. 28, 2012

Jun. 29, 2012

Sep. 27, 2013

Sep. 28, 2012

Sep. 27, 2013

Sep. 28, 2012

Pension and Post-Retirement Adjustments [Member]

Pension and Post-Retirement Adjustments [Member]

Pension and Post-Retirement Adjustments [Member]

Pension and Post-Retirement Adjustments [Member]

Foreign Currency Translation Adjustments [Member]

Foreign Currency Translation Adjustments [Member]

Foreign Currency Translation Adjustments [Member]

Foreign Currency Translation Adjustments [Member]

Loss on Derivative Instruments [Member]

Loss on Derivative Instruments [Member]

Loss on Derivative Instruments [Member]

Loss on Derivative Instruments [Member]

Accumulated Other Comprehensive Income (Loss) [Member]

Accumulated Other Comprehensive Income (Loss) [Member]

Accumulated Other Comprehensive Income (Loss) [Member]

Accumulated Other Comprehensive Income (Loss) [Member]

Reclassifications out of accumulated other comprehensive income (loss) [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balances

'

($113.20)

($129.30)

($106.70)

($135.40)

($108.80)

($52.70)

($14.60)

$22.80

($2)

($0.60)

($0.60)

'

($0.70)

($182.60)

($122)

($113.20)

($110.80)

Other comprehensive income before reclassification

'

'

-1.1

'

0.3

0.1

26.6

59.1

-48.4

46.2

'

'

-0.7

'

25.5

59.1

-48.1

45.6

Amounts reclassified from accumulated other comprehensive income [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Reclassification adjustment of prior derivative settlement, net of tax

0.1

0.1

'

'

'

'

'

'

'

'

0.1

0.1

'

'

0.1

'

0.1

'

Prior service costs, net of tax

'

'

-0.1

[1]

-0.5

[1]

-0.2

[1]

-1.3

[1]

'

'

'

'

'

'

'

'

-0.1

[1]

-0.5

[1]

-0.2

[1]

-1.3

[1]

Actuarial gains (losses), net of tax

'

'

2.4

[1]

1.6

[1]

7.2

[1]

4.4

[1]

'

'

'

'

'

'

'

'

2.4

[1]

1.6

[1]

7.2

[1]

4.4

[1]

Translation adjustment realized upon liquidation of foreign subsidiaries, net of tax

'

'

'

'

'

'

0.1

[2]

0.1

[2]

-0.4

[2]

0.4

[2]

'

'

'

'

0.1

[2]

0.1

[2]

-0.4

[2]

0.4

[2]

Net current-period other comprehensive income

'

'

1.2

1.1

7.3

3.2

26.7

59.2

-48.8

46.6

0.1

0.1

-0.7

'

28

60.3

-41.4

49.1

Balances

($154.60)

($154.60)

($128.10)

($105.60)

($128.10)

($105.60)

($26)

$44.60

($26)

$44.60

($0.50)

($0.50)

($0.70)

($0.70)

($154.60)

($61.70)

($154.60)

($61.70)

[1]

These accumulated other comprehensive income components are included in the computation of net periodic pension costs, which were recorded in bCost of revenuesb and bGeneral and administrative expensesb in our Condensed Consolidated Statements of Operations. See Note 13, bEmployee Retirement and Post-Retirement Benefit Plans,b for more information.

[2]

This accumulated other comprehensive income component is reclassified into bCost of revenuesb in our Condensed Consolidated Statements of Operations.

CONDENSED_CONSOLIDATING_FINANC2

CONDENSED CONSOLIDATING FINANCIAL INFORMATION (DETAILS) (USD $)

3 Months Ended

9 Months Ended

12 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

In Millions, unless otherwise specified

Sep. 27, 2013

Sep. 28, 2012

Sep. 27, 2013

Sep. 28, 2012

Dec. 28, 2012

Dec. 30, 2011

Dec. 28, 2012

Sep. 28, 2012

Dec. 30, 2011

Dec. 30, 2011

Dec. 28, 2012

Sep. 28, 2012

Sep. 27, 2013

Sep. 27, 2013

Dec. 28, 2012

Mar. 15, 2012

Sep. 27, 2013

Dec. 28, 2012

Mar. 15, 2012

Sep. 27, 2013

Sep. 28, 2012

Sep. 27, 2013

Sep. 28, 2012

Dec. 28, 2012

Dec. 28, 2012

Dec. 28, 2012

Dec. 28, 2012

Sep. 27, 2013

Sep. 28, 2012

Sep. 27, 2013

Sep. 28, 2012

Dec. 28, 2012

Dec. 28, 2012

Dec. 28, 2012

Dec. 28, 2012

Sep. 27, 2013

Sep. 28, 2012

Sep. 27, 2013

Sep. 28, 2012

Dec. 28, 2012

Dec. 28, 2012

Sep. 27, 2013

Sep. 28, 2012

Sep. 27, 2013

Sep. 28, 2012

Dec. 28, 2012

Dec. 28, 2012

Dec. 28, 2012

Dec. 28, 2012

Sep. 27, 2013

Sep. 28, 2012

Sep. 27, 2013

Sep. 28, 2012

Dec. 28, 2012

Dec. 28, 2012

Dec. 28, 2012

Dec. 28, 2012

As Reported [Member]

As Reported [Member]

As Reported [Member]

Restatement Adjustments [Member]

Restatement Adjustments [Member]

Restatement Adjustments [Member]

Senior Debt Obligations [Member]

3.85% Senior Notes (net of discount) [Member]

3.85% Senior Notes (net of discount) [Member]

3.85% Senior Notes (net of discount) [Member]

5.00% Senior Notes (net of discount) [Member]

5.00% Senior Notes (net of discount) [Member]

5.00% Senior Notes (net of discount) [Member]

Eliminations [Member]

Eliminations [Member]

Eliminations [Member]

Eliminations [Member]

Eliminations [Member]

Eliminations [Member]

Eliminations [Member]

Eliminations [Member]

Issuer parent [Member]

Issuer parent [Member]

Issuer parent [Member]

Issuer parent [Member]

Issuer parent [Member]

Issuer parent [Member]

Issuer parent [Member]

Issuer parent [Member]

Issuer Fox LP [Member]

Issuer Fox LP [Member]

Issuer Fox LP [Member]

Issuer Fox LP [Member]

Issuer Fox LP [Member]

Issuer Fox LP [Member]

Guarantors [Member]

Guarantors [Member]

Guarantors [Member]

Guarantors [Member]

Guarantors [Member]

Guarantors [Member]

Guarantors [Member]

Guarantors [Member]

Non-guarantors [Member]

Non-guarantors [Member]

Non-guarantors [Member]

Non-guarantors [Member]

Non-guarantors [Member]

Non-guarantors [Member]

Non-guarantors [Member]

Non-guarantors [Member]

As Reported [Member]

Restatement Adjustments [Member]

Revision Adjustments [Member]

As Reported [Member]

Restatement Adjustments [Member]

Revision Adjustments [Member]

As Reported [Member]

As Reported [Member]

Restatement Adjustments [Member]

Revision Adjustments [Member]

As Reported [Member]

Restatement Adjustments [Member]

Revision Adjustments [Member]

Current assets:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash and cash equivalents

$314.20

$289.20

$314.20

$289.20

'

'

$314.50

'

'

'

'

'

'

'

'

'

'

'

'

($41.30)

($124.90)

($41.30)

($124.90)

'

($1.60)

'

'

$115.10

$151.60

$115.10

$151.60

'

$14.40

'

'

'

'

'

'

'

'

$20.10

$16.20

$20.10

$16.20

'

$16.30

'

'

$220.30

$246.30

$220.30

$246.30

'

$285.40

'

'

Accounts receivable, including retentions

1,464.80

'

1,464.80

'

1,554.80

'

1,554.80

'

'

'

'

'

'

'

'

'

'

'

'

-14.8

'

-14.8

'

-28.3

-28.2

'

-0.1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

819.9

'

819.9

'

771.3

771.2

'

0.1

659.7

'

659.7

'

811.8

811.8

'

'

Costs and accrued earnings in excess of billings on contracts

1,459.70

'

1,459.70

'

1,384.30

'

1,384.30

'

'

'

'

'

'

'

'

'

'

'

'

-8

'

-8

'

-8.3

-8.3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

823.6

'

823.6

'

876.9

876.9

'

'

644.1

'

644.1

'

515.7

515.7

'

'

Less receivable allowances

-63.1

'

-63.1

'

-69.7

'

-69.7

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-29.2

'

-29.2

'

-29.1

-29.1

'

'

-33.9

'

-33.9

'

-40.6

-40.6

'

'

Net accounts receivable

2,861.40

'

2,861.40

'

2,869.40

'

2,869.40

'

'

'

'

'

'

'

'

'

'

'

'

-22.8

'

-22.8

'

-36.6

-36.5

'

-0.1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,614.30

'

1,614.30

'

1,619.10

1,619

'

0.1

1,269.90

'

1,269.90

'

1,286.90

1,286.90

'

'

Intercompany accounts receivable

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-4,211.10

'

-4,211.10

'

-7,017.70

-7,567.70

'

550

783.2

'

783.2

'

1,793.20

1,765.80

'

27.4

16.7

'

16.7

'

22.4

22.4

2,822.80

'

2,822.80

'

3,933.10

4,248.90

'

-315.8

588.4

'

588.4

'

1,269

1,530.60

'

-261.6

Deferred tax assets

46.5

'

46.5

'

67.6

'

67.6

'

'

'

'

'

'

'

'

'

'

'

'

-4.8

'

-4.8

'

'

'

'

'

6.7

'

6.7

'

6.8

6.8

'

'

'

'

'

'

'

'

44.6

'

44.6

'

60.3

60.3

'

'

'

'

'

'

0.5

0.5

'

'

Inventory

53.7

'

53.7

'

61.5

'

61.5

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.5

'

0.5

'

5.5

5.5

'

'

53.2

'

53.2

'

56

56

'

'

Other current assets

227.2

'

227.2

'

204.2

'

204.2

'

'

'

'

'

'

'

'

'

'

'

'

-1.5

'

-1.5

'

-10.8

-10.8

'

'

45.7

'

45.7

'

38.2

38.2

'

'

'

'

'

'

'

'

71.4

'

71.4

'

65.5

65.5

'

'

111.6

'

111.6

'

111.3

111.3

'

'

Total current assets

3,503

'

3,503

'

3,517.20

'

3,517.20

'

'

'

'

'

'

'

'

'

'

'

'

-4,281.50

'

-4,281.50

'

-7,066.70

-7,616.60

'

549.9

950.7

'

950.7

'

1,852.60

1,825.20

'

27.4

16.7

'

16.7

'

22.4

22.4

4,573.70

'

4,573.70

'

5,699.80

6,015.50

'

-315.7

2,243.40

'

2,243.40

'

3,009.10

3,270.70

'

-261.6

Investments in and advances to subsidiaries and unconsolidated joint ventures

252.8

'

252.8

'

278.3

'

278.3

'

'

'

'

'

'

'

'

'

'

'

'

-7,957.80

'

-7,957.80

'

-7,844.40

-7,213.80

-647

16.4

5,996.20

'

5,996.20

'

5,823.50

5,400.50

422.9

0.1

43.9

'

43.9

'

20.7

20.7

1,965.50

'

1,965.50

'

2,036.30

1,812

224.1

0.2

205

'

205

'

242.2

258.9

'

-16.7

Property and equipment, net

631.1

[1]

'

631.1

[1]

'

687.5

[1]

'

687.5

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

29.5

'

29.5

'

26.9

26.9

'

'

'

'

'

'

'

'

158.9

'

158.9

'

159.7

159.7

'

'

442.7

'

442.7

'

500.9

500.9

'

'

Intangible assets, net

604.1

'

604.1

'

692.2

'

692.2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.2

'

0.2

'

0.2

0.2

'

'

'

'

'

'

'

'

196.6

'

196.6

'

223.3

223.5

'

-0.2

407.3

'

407.3

'

468.7

468.5

'

0.2

Goodwill

3,703.30

'

3,703.30

'

3,721.60

'

3,247.10

'

'

474.5

474.5

'

'

'

'

'

'

'

'

0.3

'

0.3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,029.10

'

2,029.10

'

2,029.10

1,778.70

250.4

'

1,673.90

'

1,673.90

'

1,692.50

1,468.40

224.1

'

Other long-term assets

396

'

396

'

364.2

'

364.2

'

'

'

'

'

'

'

'

'

'

'

'

-7.5

'

-7.5

'

-4.5

-4.8

'

0.3

22.7

'

22.7

'

22.3

22.4

'

-0.1

'

'

'

'

'

'

296.9

'

296.9

'

231.3

231.3

'

'

83.9

'

83.9

'

115.1

115.3

'

-0.2

Total assets

9,090.30

'

9,090.30

'

9,261

[2]

'

8,786.50

'

'

'

474.5

'

'

'

'

'

'

'

'

-12,246.50

'

-12,246.50

'

-14,915.60

-14,835.20

-647

566.6

6,999.30

'

6,999.30

'

7,725.50

7,275.20

422.9

27.4

60.6

'

60.6

'

43.1

43.1

9,220.70

'

9,220.70

'

10,379.50

10,220.70

474.5

-315.7

5,056.20

'

5,056.20

'

6,028.50

6,082.70

224.1

-278.3

Current liabilities:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Current portion of long-term debt

92.2

'

92.2

'

71.8

'

71.8

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

44

'

44

'

18.9

18.9

'

'

'

'

'

'

'

'

9.6

'

9.6

'

10

10

'

'

38.6

'

38.6

'

42.9

42.9

'

'

Accounts payable and subcontractors payable, including retentions

697.5

'

697.5

'

803.5

'

803.5

'

'

'

'

'

'

'

'

'

'

'

'

-68.2

'

-68.2

'

-38.2

-38.2

'

'

3.7

'

3.7

'

4.2

4.1

'

0.1

'

'

'

'

'

'

403.5

'

403.5

'

382.7

382.8

'

-0.1

358.5

'

358.5

'

454.8

454.8

'

'

Accrued salaries and employee benefits

556.1

'

556.1

'

558.8

'

558.8

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

32.4

'

32.4

'

41

41.1

'

-0.1

'

'

'

'

'

'

355.7

'

355.7

'

362.7

362.6

'

0.1

168

'

168

'

155.1

155.1

'

'

Billings in excess of costs and accrued earnings on contracts

225.1

'

225.1

'

289.1

'

289.1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-0.2

-0.3

'

0.1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

118.8

'

118.8

'

146.3

146.4

'

-0.1

106.3

'

106.3

'

143

143

'

'

Intercompany accounts payable

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-4,211.10

'

-4,211.10

'

-7,017.70

-7,567.70

'

550

2,370.70

'

2,370.70

'

3,165.70

3,138.30

'

27.4

'

'

'

'

14.7

14.7

1,480.70

'

1,480.70

'

2,793.40

3,109.10

'

-315.7

359.7

'

359.7

'

1,043.90

1,305.60

'

-261.7

Short-term intercompany notes payable

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-56.4

'

-56.4

'

-55.9

-633.5

'

577.6

14.3

'

14.3

'

14.3

14.3

'

'

'

'

'

'

'

'

20.5

'

20.5

'

20

20

'

'

21.6

'

21.6

'

21.6

599.2

'

-577.6

Other current liabilities

257.3

'

257.3

'

277.8

'

277.8

'

'

'

'

'

'

'

'

'

'

'

'

-14.9

'

-14.9

'

-14.5

-10.5

'

-4

68.5

'

68.5

'

59.5

59.4

'

0.1

17.9

'

17.9

'

8.6

8.6

124

'

124

'

146.2

146.3

'

-0.1

61.8

'

61.8

'

78

74

'

4

Total current liabilities

1,828.20

'

1,828.20

'

2,001

'

2,001

'

'

'

'

'

'

'

'

'

'

'

'

-4,350.60

'

-4,350.60

'

-7,126.50

-8,250.20

'

1,123.70

2,533.60

'

2,533.60

'

3,303.60

3,276.10

'

27.5

17.9

'

17.9

'

23.3

23.3

2,512.80

'

2,512.80

'

3,861.30

4,177.20

'

-315.9

1,114.50

'

1,114.50

'

1,939.30

2,774.60

'

-835.3

Long-term debt

1,903

'

1,903

'

1,992.50

'

1,992.50

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

915.5

'

915.5

'

952.2

952.2

'

'

699.6

'

699.6

'

699.6

699.6

17.1

'

17.1

'

16.9

16.9

'

'

270.8

'

270.8

'

323.8

323.8

'

'

Deferred tax liabilities

399.3

'

399.3

'

379.9

'

328.3

'

'

-51.6

51.6

'

'

'

'

'

'

'

'

-7

'

-7

'

-4.8

-4.8

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

329.5

'

329.5

'

299.1

247.6

51.6

-0.1

76.8

'

76.8

'

85.6

85.5

'

0.1

Self-insurance reserves

132

'

132

'

129.8

'

129.8

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

9.4

'

9.4

'

18.3

18.3

'

'

122.6

'

122.6

'

111.5

111.5

'

'

Pension and post-retirement benefit obligations

278.5

'

278.5

'

300.9

'

300.9

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

169

'

169

'

185.4

185.4

'

'

109.5

'

109.5

'

115.5

115.5

'

'

Long-term intercompany notes payable

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-1,830.90

'

-1,830.90

'

-1,827.10

-1,249.50

'

-577.6

'

'

'

'

'

'

'

'

'

'

'

'

'

'

561.1

'

561.1

'

561.7

561.7

'

'

1,269.80

'

1,269.80

'

1,265.40

687.8

'

577.6

Other long-term liabilities

277.4

'

277.4

'

271

'

271

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3.2

'

3.2

'

2.8

2.9

'

-0.1

'

'

'

'

'

'

228.2

'

228.2

'

197.1

197

'

0.1

46

'

46

'

71.1

71.1

'

'

Total liabilities

4,818.40

'

4,818.40

'

5,075.10

'

5,023.50

'

'

'

51.6

'

'

'

'

'

'

'

'

-6,188.50

'

-6,188.50

'

-8,958.40

-9,504.50

'

546.1

3,452.30

'

3,452.30

'

4,258.60

4,231.20

'

27.4

717.5

'

717.5

'

722.9

722.9

3,827.10

'

3,827.10

'

5,139.80

5,404.10

51.6

-315.9

3,010

'

3,010

'

3,912.20

4,169.80

'

-257.6

Commitments and contingencies

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

URS stockholders' equity

4,123.50

'

4,123.50

'

4,044

'

3,621.10

'

'

'

422.9

'

'

'

'

'

'

'

'

-7,945.30

'

-7,945.30

'

-7,840.20

-7,213.70

-647

20.5

4,123.50

'

4,123.50

'

4,044

3,621.10

422.9

'

16.5

'

16.5

'

8

8

5,996.20

'

5,996.20

'

5,823.50

5,400.40

422.9

0.2

1,932.60

'

1,932.60

'

2,008.70

1,805.30

224.1

-20.7

Intercompany notes receivable

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,887.30

'

1,887.30

'

1,883

1,883

'

'

-576.5

'

-576.5

'

-577.1

-577.1

'

'

-673.4

'

-673.4

'

-687.8

-687.8

-602.6

'

-602.6

'

-583.8

-583.8

'

'

-34.8

'

-34.8

'

-34.3

-34.3

'

'

Total URS stockholders' equity

4,123.50

'

4,123.50

'

4,044

'

3,621.10

'

'

'

422.9

'

'

'

'

'

'

'

'

-6,058

'

-6,058

'

-5,957.20

-5,330.70

-647

20.5

3,547

'

3,547

'

3,466.90

3,044

422.9

'

-656.9

'

-656.9

'

-679.8

-679.8

5,393.60

'

5,393.60

'

5,239.70

4,816.60

422.9

0.2

1,897.80

'

1,897.80

'

1,974.40

1,771

224.1

-20.7

Noncontrolling interests

148.4

'

148.4

'

141.9

'

141.9

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

148.4

'

148.4

'

141.9

141.9

'

'

Total stockholders' equity

4,271.90

4,161

4,271.90

4,161

4,185.90

3,907.30

3,763

3,738.10

3,484.40

422.9

422.9

422.9

'

'

'

'

'

'

'

-6,058

'

-6,058

'

-5,957.20

-5,330.70

-647

20.5

3,547

'

3,547

'

3,466.90

3,044

422.9

'

-656.9

'

-656.9

'

-679.8

-679.8

5,393.60

'

5,393.60

'

5,239.70

4,816.60

422.9

0.2

2,046.20

'

2,046.20

'

2,116.30

1,912.90

224.1

-20.7

Total liabilities and stockholders' equity

9,090.30

'

9,090.30

'

9,261

'

8,786.50

'

'

'

474.5

'

'

'

'

'

'

'

'

-12,246.50

'

-12,246.50

'

-14,915.60

-14,835.20

-647

566.6

6,999.30

'

6,999.30

'

7,725.50

7,275.20

422.9

27.4

60.6

'

60.6

'

43.1

43.1

9,220.70

'

9,220.70

'

10,379.50

10,220.70

474.5

-315.7

5,056.20

'

5,056.20

'

6,028.50

6,082.70

224.1

-278.3

Disclosure Condensed Consolidating Statements of Operations [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenues

2,735.50

2,947.60

8,330

7,999.80

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-84.4

-87.9

-252

-294.9

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,634.80

1,680.80

4,961.80

5,124

'

'

'

'

1,185.10

1,354.70

3,620.20

3,170.70

'

'

'

'

Cost of revenues

-2,559

-2,753.30

-7,851.90

-7,484

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

84.4

87.9

252

294.9

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-1,532.10

-1,561.40

-4,616.90

-4,770.90

'

'

'

'

-1,111.30

-1,279.80

-3,487

-3,008

'

'

'

'

General and administrative expenses

-14.3

-22.6

-59.9

-62

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-15.4

-22.8

-61.4

-61.3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.1

0.2

1.5

-0.7

'

'

'

'

Acquisition-related expenses

'

0.8

'

-16.1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.8

'

-7.4

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-8.7

'

'

'

'

Goodwill impairment

'

'

'

'

'

'

'

'

'

474.5

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Equity in income (loss) in subsidiaries

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-125.9

-193.6

-273.2

-357.7

'

'

'

'

77.5

109.2

209.7

240.4

'

'

'

'

7.7

8.5

23.1

12.9

'

'

46.2

72.3

55.2

103.4

'

'

'

'

-5.5

3.6

-14.8

1

'

'

'

'

Equity in income (loss) of unconsolidated joint ventures

17.1

31.1

59.1

76.8

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.8

10.6

5.5

17

'

'

'

'

16.3

20.5

53.6

59.8

'

'

'

'

Intercompany royalty and general and administrative charges

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

39.3

35.4

108

108.5

'

'

'

'

'

'

'

'

'

'

-35.1

-32.9

-93.8

-98.9

'

'

'

'

-4.2

-2.5

-14.2

-9.6

'

'

'

'

Operating income (loss)

179.3

203.6

477.3

514.5

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-125.9

-193.6

-273.2

-357.7

'

'

'

'

101.4

122.6

256.3

280.2

'

'

'

'

7.7

8.5

23.1

12.9

'

'

114.6

169.4

311.8

374.6

'

'

'

'

81.5

96.7

159.3

204.5

'

'

'

'

Interest expense

-23.2

-20.5

-65.8

-51

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-8.5

-21.7

-24.4

-44.1

'

'

'

'

-9.7

4.7

-26.4

'

'

'

-0.2

0.1

-0.6

-0.4

'

'

'

'

-4.8

-3.6

-14.4

-6.5

'

'

'

'

Intercompany interest income

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-13.1

-11.8

-38.4

-21.2

'

'

'

'

2.5

2.5

7.4

5.1

'

'

'

'

1

1.1

2.8

1.6

'

'

9.2

8.4

27.1

12.9

'

'

'

'

0.4

-0.2

1.1

1.6

'

'

'

'

Intercompany interest expense

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

13.1

11.8

38.4

21.2

'

'

'

'

-0.3

-0.3

-0.8

-1.1

'

'

'

'

'

'

'

'

'

'

-2.7

-2.2

-7.7

-4.6

'

'

'

'

-10.1

-9.3

-29.9

-15.5

'

'

'

'

Other income (expenses)

1.6

10.8

-4.2

4.1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-0.3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.6

10.8

-4.2

4.4

'

'

'

'

Income (loss) before income taxes

157.7

193.9

407.3

467.6

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-125.9

-193.6

-273.2

-357.7

'

'

'

'

95.1

103.1

238.5

239.8

'

'

'

'

-1

14.3

-0.5

14.5

'

'

120.9

175.7

330.6

382.5

'

'

'

'

68.6

94.4

111.9

188.5

'

'

'

'

Income tax benefit (expense)

-42.3

-66.1

-123.4

-155.2

'

'

'

'

'

51.6

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-6.3

3.6

-10.5

0.2

'

'

'

'

3.2

-2.2

8.8

-0.6

'

'

-43.4

-66.5

-120.9

-142.1

'

'

'

'

4.2

-1

-0.8

-12.7

'

'

'

'

Net income (loss) including noncontrolling interests

115.4

127.8

283.9

312.4

'

'

'

'

'

422.9

'

'

'

'

'

'

'

'

'

-125.9

-193.6

-273.2

-357.7

'

'

'

'

88.8

106.7

228

240

'

'

'

'

2.2

12.1

8.3

13.9

'

'

77.5

109.2

209.7

240.4

'

'

'

'

72.8

93.4

111.1

175.8

'

'

'

'

Noncontrolling interests in income of consolidated subsidiaries

-26.6

-21.1

-55.9

-72.4

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-26.6

-21.1

-55.9

-72.4

'

'

'

'

Net income (loss) attributable to URS

88.8

106.7

228

240

'

'

'

'

'

422.9

'

'

'

'

'

'

'

'

'

-125.9

-193.6

-273.2

-357.7

'

'

'

'

88.8

106.7

228

240

'

'

'

'

2.2

12.1

8.3

13.9

'

'

77.5

109.2

209.7

240.4

'

'

'

'

46.2

72.3

55.2

103.4

'

'

'

'

Comprehensive income (loss) attributable to URS

116.8

167

186.6

289.1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-181.2

-325.3

-187.2

-472.2

'

'

'

'

116.8

167

186.6

289.1

'

'

'

'

2.2

12.1

8.3

13.9

'

'

107.1

171.8

173.7

294.4

'

'

'

'

71.9

141.4

5.2

163.9

'

'

'

'

Disclosure Condensed Consolidating Statements of Cash Flows [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net cash from operating activities

'

'

358.3

299.1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-41.3

27.5

'

'

'

'

'

'

-75.6

51.7

'

'

'

'

'

'

-6.3

-0.6

'

'

'

'

379.7

55.4

'

'

'

'

'

'

101.8

165.1

'

'

'

'

Cash flows from investing activities:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payments for business acquisitions, net of cash acquired

'

'

'

-1,345.70

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-1,345.70

'

'

'

'

Proceeds from disposal of property and equipment

'

'

32.6

17.2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.4

1.4

'

'

'

'

'

'

31.2

15.8

'

'

'

'

Payments in settlement of foreign currency forward contract

'

'

'

-1,260.60

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-1,260.60

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Receipts in settlement of foreign currency forward contract

'

'

'

1,260.30

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,260.30

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Investments in unconsolidated joint ventures

'

'

-0.1

-5.4

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-0.1

-4.3

'

'

'

'

'

'

'

-1.1

'

'

'

'

Changes in restricted cash

'

'

4.6

3.8

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4.6

3.8

'

'

'

'

Capital expenditures, less equipment purchased through capital leases and equipment notes

'

'

-68.2

-101.8

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-6.2

-8.4

'

'

'

'

'

'

'

'

'

'

'

'

-23.3

-30

'

'

'

'

'

'

-38.7

-63.4

'

'

'

'

Dividends received

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-0.1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.1

'

'

'

'

'

'

'

'

'

'

'

'

Investment in intercompany notes receivable

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,910

'

'

'

'

'

'

'

-555

'

'

'

'

'

'

'

-800

'

'

'

'

'

-555

'

'

'

'

'

'

0

'

'

'

'

'

Receipts from intercompany notes receivable

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-15.3

-127.8

'

'

'

'

'

'

'

97.8

'

'

'

'

'

'

15.3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

30

'

'

'

'

Other intercompany investing activities

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-1,586.70

425.4

'

'

'

'

'

'

549.4

-670.3

'

'

'

'

'

'

-9

0.6

'

'

'

'

676.7

73

'

'

'

'

'

'

369.6

171.3

'

'

'

'

Net cash from investing activities

'

'

-31.1

-1,432.20

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-1,602

2,207.50

'

'

'

'

'

'

543.2

-1,136.20

'

'

'

'

'

'

6.3

-799.4

'

'

'

'

654.7

-514.8

'

'

'

'

'

'

366.7

-1,189.30

'

'

'

'

Cash flows from financing activities:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Borrowings from long-term debt

'

'

'

998.9

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

198.9

'

'

'

'

'

'

'

800

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payments on long-term debt

'

'

-3.6

-4.4

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-3.3

-4.3

'

'

'

'

'

'

-0.3

-0.1

'

'

'

'

Borrowings from revolving line of credit

'

'

929.4

560

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

871

560

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

58.4

'

'

'

'

'

Payments on revolving line of credit

'

'

-987.2

-433.6

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-871

-433.6

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-116.2

'

'

'

'

'

Net borrowings (payments) under foreign lines of credit and short-term notes

'

'

-21.1

-12.7

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-16.1

-0.6

'

'

'

'

'

'

'

'

'

'

'

'

-0.1

-0.1

'

'

'

'

'

'

-4.9

-12

'

'

'

'

Net change in overdrafts

'

'

-55.1

4.1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.6

-75.7

'

'

'

'

'

'

'

75.7

'

'

'

'

'

'

'

'

'

'

'

'

-50.7

-0.7

'

'

'

'

'

'

-6

4.8

'

'

'

'

Payments on capital lease obligations

'

'

-13.9

-10.1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-0.6

-0.6

'

'

'

'

'

'

'

'

'

'

'

'

-3.5

-3.7

'

'

'

'

'

'

-9.8

-5.8

'

'

'

'

Payments of debt issuance costs

'

'

'

-8.8

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-8.8

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Excess tax benefits from stock-based compensation

'

'

1.6

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.6

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from employee stock purchases and exercises of stock options

'

'

14.6

7.7

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

14.6

7.7

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Distributions to noncontrolling interests

'

'

-49.2

-51.9

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-49.2

-51.9

'

'

'

'

Contributions and advances from noncontrolling interests

'

'

'

2.3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.1

'

'

'

'

'

'

'

2.2

'

'

'

'

Dividends paid

'

'

-46.8

-29.8

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.1

'

'

'

'

'

'

-46.8

-29.8

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-0.1

'

'

'

'

Repurchases of common stock

'

'

-93.3

-40

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-93.3

-40

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Intercompany notes borrowing

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-1,910

'

'

'

'

'

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

555

'

'

'

'

'

'

'

1,355

'

'

'

'

Intercompany notes repayment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

15.3

127.8

'

'

'

'

'

'

'

-30

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-15.3

-97.8

'

'

'

'

Other intercompany financing activities

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,586.70

-425.4

'

'

'

'

'

'

-226.3

743.4

'

'

'

'

'

'

'

'

'

'

'

'

-973

-95.1

'

'

'

'

'

'

-387.4

-222.9

'

'

'

'

Net cash from financing activities

'

'

-324.6

981.7

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,603.60

-2,283.20

'

'

'

'

'

'

-366.9

1,042.30

'

'

'

'

'

'

'

800

'

'

'

'

-1,030.60

451.2

'

'

'

'

'

'

-530.7

971.4

'

'

'

'

Net change in cash and cash equivalents

'

'

2.6

-151.4

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-39.7

-48.2

'

'

'

'

'

'

100.7

-42.2

'

'

'

'

'

'

'

'

'

'

'

'

3.8

-8.2

'

'

'

'

'

'

-62.2

-52.8

'

'

'

'

Effect of foreign exchange rate changes on cash and cash equivalents

'

'

-2.9

4.6

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-2.9

4.6

'

'

'

'

Cash and cash equivalents at beginning of period

'

'

314.5

436

'

'

314.5

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-1.6

-76.7

'

-1.6

'

'

'

'

14.4

193.8

'

14.4

'

'

'

'

'

'

'

'

'

'

16.3

24.4

'

16.3

'

'

'

'

285.4

294.5

'

285.4

'

'

Cash and cash equivalents at end of period

314.2

289.2

314.2

289.2

'

'

314.5

'

'

'

'

'

'

'

'

'

'

'

'

-41.3

-124.9

-41.3

-124.9

'

-1.6

'

'

115.1

151.6

115.1

151.6

'

14.4

'

'

'

'

'

'

'

'

20.1

16.2

20.1

16.2

'

16.3

'

'

220.3

246.3

220.3

246.3

'

285.4

'

'

Senior Notes and Canadian Notes [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior Notes, aggregate principal amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

400

'

'

600

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior Notes, interest rate, stated percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3.85%

'

'

5.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior Notes, future indebtedness threshold for guarantors

'

'

'

'

'

'

'

'

'

'

'

'

100

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior Notes (net of discount)

'

'

'

'

'

'

'

'

'

'

'

'

999.1

399.6

399.5

'

599.5

599.5

'

'

'

'

'

'

'

'

'

300.4

'

300.4

'

300.4

'

'

'

699.6

'

699.6

'

699.6

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior Notes, unamortized discount

'

'

'

'

'

'

'

'

'

'

'

'

$0.90

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

The unamortized computer software costs were $78.4 million and $71.1 million, respectively, as of September 27, 2013 and December 28, 2012.

[2]

Total assets by segments for the year ended December 28, 2012 were restated to correct an error related to prior year goodwill impairment charges. See Note 1, bBusiness, Basis of Presentation, and Accounting Policies.b

OTHER_COMPREHENSIVE_INCOME_LOS

OTHER COMPREHENSIVE INCOME (LOSS) AND ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (DETAILS) (USD $)	3 Months Ended	9 Months Ended
In Millions, unless otherwise specified	Sep. 27, 2013	Sep. 27, 2013	Dec. 28, 2012
Other comprehensive income (loss) [Line Items]	'	'	'
Reclassification adjustment of prior derivative settlement, net of tax	$0.10	$0.10	'
Balances	($154.60)	($154.60)	($113.20)

SELECTED_QUARTERLY_FINANCIAL_D

SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (DETAILS) (USD $)	3 Months Ended				9 Months Ended				12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 27, 2013		Sep. 28, 2012		Sep. 27, 2013		Sep. 28, 2012		Dec. 30, 2011	Dec. 30, 2011
									Scenario, Previously Reported [Member]	Restatement Adjustment [Member]
Selected Quarterly Financial Information (unaudited) [Abstract]	'		'		'		'		'	'
Revenues	$2,735.50		$2,947.60		$8,330		$7,999.80		'	'
Cost of revenues	-2,559		-2,753.30		-7,851.90		-7,484		'	'
Acquisition-related expenses	'		0.8		'		-16.1		'	'
Goodwill impairment	'		'		'		'		'	474.5
Operating income (loss)	179.3		203.6		477.3		514.5		'	'
Other income (expenses)	1.6		10.8		-4.2		4.1		'	'
Income tax benefit (expense)	-42.3		-66.1		-123.4		-155.2		'	51.6
Net income (loss) including noncontrolling interests	115.4		127.8		283.9		312.4		'	422.9
Noncontrolling interests in income of consolidated subsidiaries	-26.6		-21.1		-55.9		-72.4		'	'
Net income (loss) attributable to URS	88.8		106.7		228		240		'	422.9
Earnings (loss) per share:	'		'		'		'		'	'
Basic	$1.21		$1.43		$3.08		$3.23		'	'
Diluted	$1.20		$1.43		$3.07		$3.22		'	'
Weighted-average shares of common stock outstanding:	'		'		'		'		'	'
Basic	73.6	[1]	74.5	[1]	73.9	[1]	74.2	[1]	'	'
Diluted	73.9		74.6		74.3		74.5		'	'
Selected Quarterly Financial Information (Textuals) [Abstract]	'		'		'		'		'	'
Goodwill impairment	'		'		'		'		'	-474.5
Goodwill impairment loss net of tax	32.9		'		'		'		732.2	'
Consolidated Statements of Operations Data [Abstract]	'		'		'		'		'	'
Income (loss) before income taxes	157.7		193.9		407.3		467.6		'	'
Income tax benefit (expense)	-42.3		-66.1		-123.4		-155.2		'	51.6
Net income (loss) including noncontrolling interests	115.4		127.8		283.9		312.4		'	422.9
Noncontrolling interests in income of consolidated subsidiaries	-26.6		-21.1		-55.9		-72.4		'	'
Net income (loss) attributable to URS	$88.80		$106.70		$228		$240		'	$422.90
[1]	Weighted-average shares of common stock outstanding is net of treasury stock.

INCOME_TAXES_DETAILS

INCOME TAXES (DETAILS) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 27, 2013	Sep. 28, 2012	Sep. 27, 2013	Sep. 28, 2012
Effective income tax rate continuing operations tax rate reconciliation [Abstract]	'	'	'	'
Total income tax expense (benefit)	$42.30	$66.10	$123.40	$155.20

INCOME_TAXES_DETAILS_2

INCOME TAXES (DETAILS 2) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 27, 2013	Sep. 28, 2012	Sep. 27, 2013	Sep. 28, 2012	Dec. 28, 2012
Deferred components of income tax expense:	'	'	'	'	'
Subtotal	'	'	$36	$2.50	'
Total income tax expense (benefit)	42.3	66.1	123.4	155.2	'
Geographic areas income before income taxes [Abstract]	'	'	'	'	'
Total income (loss) before income taxes and noncontrolling interests	157.7	193.9	407.3	467.6	'
Current deferred tax assets (liabilities):	'	'	'	'	'
Net current deferred tax assets	46.5	'	46.5	'	67.6
Non-Current deferred tax assets (liabilities):	'	'	'	'	'
Net non-current deferred tax liabilities	($399.30)	'	($399.30)	'	($379.90)