Urs (URS) 8-K/A 4 Aug 14 2013 FY Financial Statements and Exhibits Financial data

Document_And_Entity_Informatio

Document And Entity Information (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Jan. 03, 2014	Feb. 24, 2014	Jun. 28, 2013
Document And Entity Information [Abstract]	'	'	'
Document Type	'8-K/A	'	'
Amendment Flag	'true	'	'
Document Period End Date	3-Jan-14	'	'
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 Public Float	'	'	$3,476.40
Entity Common Stock, Shares Outstanding	'	72,136,210	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Jan. 03, 2014		Dec. 28, 2012
Current assets:	'		'
Cash and cash equivalents	$283,700,000		$314,500,000
Accounts receivable, including retentions of $116.6 and $114.4, respectively	1,392,600,000		1,554,800,000
Costs and accrued earnings in excess of billings on contracts	1,521,500,000		1,384,300,000
Less receivable allowances	-65,100,000		-69,700,000
Net accounts receivable	2,849,000,000		2,869,400,000
Deferred tax assets	35,600,000		67,600,000
Inventory	49,200,000		61,500,000
Other current assets	173,200,000		204,200,000
Total current assets	3,390,700,000		3,517,200,000
Investments in and advances to unconsolidated joint ventures	245,600,000		278,300,000
Property and equipment, net	608,100,000	[1],[2]	687,500,000	[1],[2]
Intangible assets, net	569,700,000		692,200,000
Goodwill	3,695,600,000		3,721,600,000
Other long-term assets	208,300,000		364,200,000
Total assets	8,718,000,000		9,261,000,000
Current liabilities:	'		'
Current portion of long-term debt	44,600,000		71,800,000
Accounts payable and subcontractors payable, including retentions of $29.2 and $32.3, respectively	688,300,000		803,500,000
Accrued salaries and employee benefits	507,400,000		558,800,000
Billings in excess of costs and accrued earnings on contracts	233,100,000		289,100,000
Other current liabilities	365,200,000		277,800,000
Total current liabilities	1,838,600,000		2,001,000,000
Long-term debt	1,666,900,000		1,992,500,000
Deferred tax liabilities	444,200,000		379,900,000
Self-insurance reserves	127,200,000		129,800,000
Pension and post-retirement benefit obligations	285,700,000		300,900,000
Other long-term liabilities	128,400,000		271,000,000
Total liabilities	4,491,000,000		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; 89.1 and 88.9 shares issued, respectively; and 75.0 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	3,038,100,000		3,003,900,000
Accumulated other comprehensive loss	-200,300,000		-113,200,000
Retained earnings	1,830,700,000		1,647,300,000
Total URS stockholders' equity	4,081,200,000		4,044,000,000
Noncontrolling interests	145,800,000		141,900,000
Total stockholders' equity	4,227,000,000		4,185,900,000
Total liabilities and stockholders' equity	$8,718,000,000		$9,261,000,000
[1]	         The unamortized computer software costs were $76.0 million and $71.1 million, respectively, as of January 3, 2014 and December 28, 2012.
[2]	Property and equipment, net is categorized by the location of incorporation of the legal entities.

PARENTHETICAL_DATA_TO_THE_CONS

PARENTHETICAL DATA TO THE CONSOLIDATED BALANCE SHEETS (USD $)	Jan. 03, 2014	Dec. 28, 2012
In Millions, except Share data, unless otherwise specified
Current assets:	'	'
Accounts receivable retentions	$116.60	$114.40
Current liabilities:	'	'
Accounts payable and subcontractors payable retentions	$29.20	$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	89,100,000	88,900,000
Common stock shares outstanding	75,000,000	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																12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Jan. 03, 2014		Sep. 27, 2013		Jun. 28, 2013		Mar. 29, 2013		Dec. 28, 2012		Sep. 28, 2012		Jun. 29, 2012		Mar. 30, 2012		Jan. 03, 2014		Dec. 28, 2012		Dec. 30, 2011
Income Statement [Abstract]	'		'		'		'		'		'		'		'		'		'		'
Revenues	$2,660.70		$2,735.50		$2,792		$2,802.50		$2,972.70		$2,947.60		$2,690.70		$2,361.50		$10,990.70		$10,972.50		$9,545
Cost of revenues	-2,564.10		-2,559		-2,641.60		-2,651.30		-2,810.50		-2,753.30		-2,527.50		-2,203.20		-10,416		-10,294.50		-8,988.80
General and administrative expenses	'		'		'		'		'		'		'		'		-77.5		-83.6		-79.5
Acquisition-related expenses	'		'		'		'		'		0.8	[1]	-11.3	[1]	-5.6	[1]	'		-16.1		-1
Restructuring costs	'		'		'		'		'		'		'		'		'		'		-5.5
Goodwill impairment	'		'		'		'		'		'		'		'		'		'		-351.3
Equity in income (loss) of unconsolidated joint ventures	'		'		'		'		'		'		'		'		93.6		107.6		132.2
Operating income (loss)	113.5		179.3		145.4		152.6		171.4		203.6		149.5		161.4		590.8		685.9		251.1
Interest expense	'		'		'		'		'		'		'		'		-86.1		-70.7		-22.1
Other income (expenses)	-3.5	[2]	1.6	[2]	-3.3	[2]	-2.5	[2]	-3.6	[2]	10.8	[2]	-9.2	[2]	2.5	[2]	-7.7		0.5		'
Income (loss) before income taxes	'		'		'		'		'		'		'		'		497		615.7		229
Income tax benefit (expense)	-44.3	[3]	-42.3	[3]	-38.9	[3]	-42.2	[3]	-34.7		-66.1		-40.5		-48.6		-167.7		-189.9		-143.4
Net income (loss) including noncontrolling interests	45.4		115.4		81.7		86.8		113.4		127.8		79.1		105.5		329.3		425.8		85.6
Noncontrolling interests in income of consolidated subsidiaries	-26.2		-26.6		-14.4		-14.9		-42.8		-21.1		-25.5		-25.8		-82.1		-115.2		-128.5
Net income (loss) attributable to URS	$19.20		$88.80		$67.30		$71.90		$70.60		$106.70		$53.60		$79.70		$247.20		$310.60		($42.90)
Earnings (loss) per share:	'		'		'		'		'		'		'		'		'		'		'
Basic	$0.26		$1.21		$0.91		$0.97		$0.95		$1.43		$0.72		$1.08		$3.35		$4.18		($0.56)
Diluted	$0.26		$1.20		$0.91		$0.96		$0.95		$1.43		$0.72		$1.07		$3.31		$4.17		($0.56)
Weighted-average shares of common stock outstanding:	'		'		'		'		'		'		'		'		'		'		'
Basic	73.6	[4]	73.6		73.8		74.4		74.5		74.5	[4]	74.2		74		73.9	[4],[5]	74.3	[5]	77.3	[5]
Diluted	74.2		73.9		74		74.9		74.6		74.6		74.6		74.3		74.7		74.5		77.3
Cash dividends declared per share	'		'		'		'		'		'		'		'		$0.84		$0.80		'
[1]	For the year ended December 28, 2012, we recorded acquisition-related expenses in connection with our acquisition of Flint. See further discussion in Note 8, bAcquisitions.b
[2]	During fiscal 2013, bOther income (expenses)b represents foreign currency gains (losses) recognized on intercompany financing arrangements. During fiscal 2012, bOther income (expenses)b represents foreign currency gains (losses) recognized on intercompany financing arrangements and foreign currency forward contracts. See further discussion in Note 11, bIndebtedness.b During the fourth quarter of 2013, we recorded income tax expense of $10.0 million related to prior quarters. This included U.S. tax on the sale of Canadian properties of $6.4 million and dividends from a Canadian joint venture of $3.6 million. This amount recorded in the fourth quarter was not material to prior quarters and, accordingly, the prior quarters have not been revised. On an after-tax basis, these items resulted in decreases to net income and diluted EPS of $10.0 million and $0.15, respectively.
[3]	During the fourth quarter of 2013, we recorded income tax expense of $10.0 million related to prior quarters. This included U.S. tax on the sale of Canadian properties of $6.4 million and dividends from a Canadian joint venture of $3.6 million. This amount recorded in the fourth quarter was not material to prior quarters and, accordingly, the prior quarters have not been revised. On an after-tax basis, these items resulted in decreases to net income and diluted EPS of $10.0 million and $0.15, respectively.
[4]	Weighted-average shares of common stock outstanding is net of treasury stock and excludes nonvested restricted stock awards. No dilution was applied to our basic weighted-average shares outstanding for the year ended December 30, 2011, due to a goodwill impairment charge that resulted in a net loss for the year.
[5]	Weighted-average shares of common stock outstanding is net of treasury stock and excludes nonvested restricted stock awards.

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	12 Months Ended
In Millions, unless otherwise specified	Jan. 03, 2014	Dec. 28, 2012	Dec. 30, 2011
Comprehensive income (loss):	'	'	'
Net income (loss) including noncontrolling interests	$329.30	$425.80	$85.60
Pension and post-retirement related adjustments, net of tax	-17	-26.6	-62.7
Foreign currency translation adjustments, net of tax	-70.2	24.8	-11.2
Loss on derivative instruments, net of tax	'	-0.6	'
Reclassification adjustment of prior derivative settlement, net of tax	0.1	'	'
Comprehensive income (loss)	242.2	423.4	11.7
Noncontrolling interests in comprehensive income of consolidated subsidiaries	-82.1	-115.2	-128.5
Comprehensive income (loss) attributable to URS	$160.10	$308.20	($116.80)

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. 31, 2010	$4,201	$0.90	($212.10)	$2,924.30	($36.90)	$1,441	$4,117.20	$83.80
Beginning Balances (in shares) at Dec. 31, 2010	'	81.9	'	'	'	'	'	'
Employee stock purchases and exercises of stock options	11.7	'	'	11.7	'	'	11.7	'
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	-15.3	'	'	-15.3	'	'	-15.3	'
Stock repurchased in connection with exercises of stock options and vesting of restricted stock awards (in shares)	'	-0.3	'	'	'	'	'	'
Stock-based compensation	45.3	'	'	45.3	'	'	45.3	'
Stock-based compensation (in shares)	'	0.8	'	'	'	'	'	'
Excess tax benefits from stock-based compensation	0.8	'	'	0.8	'	'	0.8	'
Foreign currency translation adjustments, net of tax	-11.2	'	'	'	-11.2	'	-11.2	'
Pension and post-retirement related adjustments, net of tax	-62.7	'	'	'	-62.7	'	-62.7	'
Repurchases of common stock	-242.8	'	-242.8	'	'	'	-242.8	'
Repurchases of common stock (in shares)	'	-6	'	'	'	'	'	'
Distributions to noncontrolling interests	-111.7	'	'	'	'	'	'	-111.7
Contributions and advances from noncontrolling interests	6.9	'	'	'	'	'	'	6.9
Other transactions with noncontrolling interests	-0.3	'	'	'	'	'	'	-0.3
Net income (loss) including noncontrolling interests	85.6	'	'	'	'	-42.9	-42.9	128.5
Ending Balances at Dec. 30, 2011	3,907.30	0.9	-454.9	2,966.80	-110.8	1,398.10	3,800.10	107.2
Ending Balances (in shares) at Dec. 30, 2011	'	76.7	'	'	'	'	'	'
Employee stock purchases and exercises of stock options	8.9	'	'	8.9	'	'	8.9	'
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	-15.5	'	'	-15.5	'	'	-15.5	'
Stock repurchased in connection with exercises of stock options and vesting of restricted stock awards (in shares)	'	-0.4	'	'	'	'	'	'
Stock-based compensation	43.6	'	'	43.6	'	'	43.6	'
Stock-based compensation (in shares)	'	1.2	'	'	'	'	'	'
Excess tax benefits from stock-based compensation	0.1	'	'	0.1	'	'	0.1	'
Foreign currency translation adjustments, net of tax	24.8	'	'	'	24.8	'	24.8	'
Pension and post-retirement related adjustments, net of tax	-26.6	'	'	'	-26.6	'	-26.6	'
Loss on derivative instruments, net of tax	-0.6	'	'	'	-0.6	'	-0.6	'
Repurchases of common stock	-40	'	-40	'	'	'	-40	'
Repurchases of common stock (in shares)	'	-1	'	'	'	'	'	'
Cash dividends declared	-61.4	'	'	'	'	-61.4	-61.4	'
Noncontrolling interests from an acquisition	2	'	'	'	'	'	'	2
Distributions to noncontrolling interests	-83.8	'	'	'	'	'	'	-83.8
Contributions and advances from noncontrolling interests	1.2	'	'	'	'	'	'	1.2
Other transactions with noncontrolling interests	0.1	'	'	'	'	'	'	0.1
Net income (loss) including noncontrolling interests	425.8	'	'	'	'	310.6	310.6	115.2
Ending Balances at Dec. 28, 2012	4,185.90	0.9	-494.9	3,003.90	-113.2	1,647.30	4,044	141.9
Ending Balances (in shares) at Dec. 28, 2012	76.8	76.8	'	'	'	'	'	'
Employee stock purchases and exercises of stock options	20.2	'	'	20.2	'	'	20.2	'
Employee stock purchases and exercises of stock options (in shares)	'	0.6	'	'	'	'	'	'
Stock repurchased in connection with exercises of stock options and vesting of restricted stock awards	-17.9	'	'	-17.9	'	'	-17.9	'
Stock repurchased in connection with exercises of stock options and vesting of restricted stock awards (in shares)	'	-0.4	'	'	'	'	'	'
Stock-based compensation	30.4	'	'	30.4	'	'	30.4	'
Excess tax benefits from stock-based compensation	1.5	'	'	1.5	'	'	1.5	'
Foreign currency translation adjustments, net of tax	-70.2	'	'	'	-70.2	'	-70.2	'
Pension and post-retirement related adjustments, net of tax	-17	'	'	'	-17	'	-17	'
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	-63.8	'	'	'	'	-63.8	-63.8	'
Distributions to noncontrolling interests	-79	'	'	'	'	'	'	-79
Other transactions with noncontrolling interests	0.8	'	'	'	'	'	'	0.8
Net income (loss) including noncontrolling interests	329.3	'	'	'	'	247.2	247.2	82.1
Ending Balances at Jan. 03, 2014	$4,227	$0.90	($588.20)	$3,038.10	($200.30)	$1,830.70	$4,081.20	$145.80
Ending Balances (in shares) at Jan. 03, 2014	75	75	'	'	'	'	'	'

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
In Millions, unless otherwise specified	Jan. 03, 2014	Dec. 28, 2012	Dec. 30, 2011
Cash flows from operating activities:	'	'	'
Net income (loss) including noncontrolling interests	$329.30	$425.80	$85.60
Adjustments to reconcile net income (loss) to net cash from operating activities:	'	'	'
Depreciation and amortization	156.8	132.4	82.1
Amortization of intangible assets	107.4	101.2	60.6
Goodwill impairment	'	'	351.3
Write-off of Canadian Notes premium	-23.2	'	'
Loss (gain) on disposal of property and equipment	-25.4	-3.4	-8.9
Deferred income taxes	73	-16.6	28.3
Stock-based compensation	31.8	43.6	45.3
Equity in income of unconsolidated joint ventures	-93.6	-107.6	-132.2
Dividends received from unconsolidated joint ventures	113	88.7	107.3
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	364.3	-92.2	10.6
Inventory	12.2	7	-11.9
Other current assets	36	-27	-7.3
Other long-term assets	-200.5	-62.2	-91.2
Accounts payable, accrued salaries and employee benefits, and other current liabilities	-219.5	-13.7	-40.5
Billings in excess of costs and accrued earnings on contracts	-54.5	-35.2	13.8
Other long-term liabilities	7.1	-10.6	13
Total adjustments and changes	284.9	4.4	420.3
Net cash from operating activities	614.2	430.2	505.9
Cash flows from investing activities:	'	'	'
Payments for business acquisitions, net of cash acquired	'	-1,345.70	-282.1
Proceeds from disposal of property and equipment	63.7	25.3	14.1
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	-0.2	-4.4	-19.6
Changes in restricted cash	4.3	3.9	7
Capital expenditures, less equipment purchased through capital leases and equipment notes	-81	-125.4	-67.5
Net cash from investing activities	-13.2	-1,446.60	-348.1
Cash flows from financing activities:	'	'	'
Borrowings from long-term debt	'	998.9	700
Payments on long-term debt	-220.5	-38	-632.6
Borrowings from revolving line of credit	1,028.20	661.6	138.6
Payments on revolving line of credit	-1,124.10	-583.6	-115.7
Net borrowings (payments) under foreign lines of credit and short-term notes	-26.6	-20.5	-16.4
Net change in overdrafts	-54.9	54.5	-18
Payments on capital lease obligations	-18	-14.6	-10.9
Payments of debt issuance costs and other financing activities	-0.8	-8.7	-3.1
Proceeds from employee stock purchases and exercises of stock options	20.2	8.9	11.7
Distributions to noncontrolling interests	-79	-83.8	-111.7
Contributions and advances from noncontrolling interests	0.5	2.3	6.6
Dividends paid	-62.2	-44.7	'
Repurchases of common stock	-93.3	-40	-242.8
Net cash from financing activities	-630.5	892.3	-294.3
Net change in cash and cash equivalents	-29.5	-124.1	-136.5
Effect of foreign exchange rate changes on cash and cash equivalents	-1.3	2.6	-1.3
Cash and cash equivalents at beginning of period	314.5	436	573.8
Cash and cash equivalents at end of period	283.7	314.5	436
Supplemental information:	'	'	'
Interest paid	83.9	64.5	15.2
Taxes paid	101.3	150.6	177.3
Supplemental schedule of non-cash investing and financing activities:	'	'	'
Equipment acquired with capital lease obligations and equipment note obligations	54.3	27.9	14.2
Purchase price adjustment and contingent consideration payable under acquisitions	'	'	7.9
Cash dividends declared but not paid	$18.30	$16.70	'

BUSINESS_BASIS_OF_PRESENTATION

BUSINESS, BASIS OF PRESENTATION, AND ACCOUNTING POLICIES	12 Months Ended
	Jan. 03, 2014
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 as of January 31, 2014. We operate through four reporting segments: the Infrastructure & Environment Division, the Federal Services Division, the Energy & Construction Division and the Oil & Gas Division.
	Our fiscal year is the 52/53-week period ending on the Friday closest to December 31. Our fiscal year ended January 3, 2014 contained 53 weeks.
	Principles of Consolidation and Basis of Presentation
	Our 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.
	We completed the acquisitions of Flint Energy Services Ltd. (“Flint”) and Apptis Holdings, Inc. (“Apptis”) on May 14, 2012 and June 1, 2011, respectively. The operations of Flint became our Oil & Gas Division, with the exception of the facility construction component that was included in our Energy & Construction Division. The operating results of Flint and Apptis from their acquisition dates through January 3, 2014 were included in our consolidated financial statements under the Oil & Gas and Federal Services Divisions, respectively.
	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 Consolidated Balance Sheets. All significant intercompany transactions and accounts have been eliminated in consolidation.
	Use of and Changes in Estimates
	The preparation of our consolidated financial statements in conformity with generally accepted accounting principles requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and related disclosures at the balance sheet dates, and the reported amounts of revenues and expenses during the reporting period. 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.
	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.
	For the year ended January 3, 2014, our results of operations included the recognition of a $31.1 million performance-based incentive fee from our work managing one of our chemical demilitarization programs. This change in estimate resulted in increases of $31.1 million in operating income, $18.7 million in net income, and $0.25 in diluted earnings per share (“EPS”) for the year ended January 3, 2014.
	For the year ended December 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 its 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 year ended December 28, 2012.
	For the year ended December 30, 2011, we recognized $24.8 million from our share of cost savings on an air quality control services project that was realized during the period. This change in estimate resulted in increases of $24.8 million in operating income, $14.9 million in net income, and $0.19 in diluted EPS for the year ended December 30, 2011.
	Consolidation of Variable Interest Entities
	We participate in joint ventures, which include partnerships and partially-owned limited liability companies, to bid, negotiate and complete specific projects. We are required to consolidate these joint ventures if we hold the majority voting interest or if the joint venture is determined to be a variable interest entity (“VIE”) and we are determined to be the primary beneficiary.
	We are considered to be the primary beneficiary if we have the power to direct the activities that most significantly impact the VIE's economic performance and the obligation to absorb losses or the right to receive benefits of the VIE that could potentially be significant to the VIE. In determining whether we are the primary beneficiary, we take into consideration the following:
	Identifying the significant activities and the parties that have the power to direct them;
	Reviewing the governing board composition and participation ratio;
	Determining the equity, profit and loss ratio;
	Determining the management-sharing ratio;
	Reviewing employment terms, including which joint venture partner provides the project manager; and
	Reviewing the funding and operating agreements.
	Examples of significant activities include the following:
	Program and project management;
	Engineering services;
	Procurement services;
	Construction;
	Construction management; and
	Operations and maintenance services.
	Based on the above, if we determine that the power to direct the significant activities is shared by two or more joint venture parties, then there is no primary beneficiary and no party consolidates the VIE. In making the shared-power determination, we analyze the key contractual terms, governance, related party and de facto agency as they are defined in the accounting standard, and other arrangements to determine if the shared power exists.
	As required by the accounting standard, we perform a quarterly re-assessment to determine whether we are the primary beneficiary. This evaluation may result in consolidation of a previously unconsolidated joint venture or in deconsolidation of a previously consolidated joint venture. See Note 6, “Joint Ventures,” for further information on our VIEs.
	Revenue Recognition
	We recognize revenues from engineering, construction and construction-related contracts using the percentage-of-completion method as project progress occurs. Service-related contracts, including operations and maintenance services and a variety of technical assistance services, are accounted for using the proportionate performance method as project progress occurs.
	Percentage of Completion. Under the percentage-of-completion method, revenue is recognized as contract performance progresses. We estimate the progress towards completion to determine the amount of revenue and profit to recognize. We generally utilize a cost-to-cost approach in applying the percentage-of-completion method, where revenue is earned in proportion to total costs incurred, divided by total costs expected to be incurred. Costs are generally determined from actual hours of labor effort expended at per-hour labor rates calculated using a labor dollar multiplier that includes direct labor costs and allocable overhead costs. Direct non-labor costs are charged as incurred plus any mark-up permitted under the contract.
	Under the percentage-of-completion method, recognition of profit is dependent upon the accuracy of a variety of estimates, including engineering progress, materials quantities, and achievement of milestones, incentives, penalty provisions, labor productivity, cost estimates and others. Such estimates are based on various professional judgments we make with respect to those factors and are subject to change as the project proceeds and new information becomes available.
	Proportional Performance. Our service contracts, primarily performed by our Federal Services Division, are accounted for using the proportional performance method, under which revenue is 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.
	Revenues from all contracts may vary based on the actual number of labor hours worked and other actual contract costs incurred. If actual labor hours and other contract costs exceed the original estimate agreed to by our client, we generally obtain a change order, contract modification or successfully prevail in a claim in order to receive and recognize additional revenues relating to the additional costs (see “Change Orders and Claims” below).
	If estimated total costs on any contract indicate a loss, we charge the entire estimated loss to operations in the period the loss becomes known. The cumulative effect of revisions to revenue, estimated costs to complete contracts, including penalties, incentive awards, change orders, claims, anticipated losses, and others are recorded in the accounting period in which the events indicating a loss or change in estimates are known and the loss can be reasonably estimated. Such revisions could occur at any time and the effects may be material.
	We have a history of making reasonably dependable estimates of the extent of progress towards completion, contract revenue and contract completion costs on our long-term engineering and construction contracts. However, due to uncertainties inherent in the estimation process, it is possible that actual completion costs may vary from estimates.
	Change Orders and Claims. Change orders and/or claims occur when changes are experienced once contract performance is underway, and may arise under any of the contract types described below.
	Change orders are modifications of an original contract that effectively change the existing provisions of the contract without adding new scope or terms. Change orders may include changes in specifications or designs, manner of performance, facilities, equipment, materials, sites and period of completion of the work. Either we or our clients may initiate change orders. Client agreement as to the terms of change orders is, in many cases, reached prior to work commencing; however, sometimes circumstances require that work progress without obtaining client agreement. Costs related to change orders are recognized as incurred. Revenues attributable to change orders that are unapproved as to price or scope are recognized to the extent that costs have been incurred if the amounts can be reliably estimated and their realization is probable. Revenues in excess of the costs attributable to change orders that are unapproved as to price or scope are recognized only when realization is assured beyond a reasonable doubt. Change orders that are unapproved as to both price and scope are evaluated as claims.
	Claims are amounts in excess of agreed contract prices that we seek to collect from our clients or others for customer-caused delays, errors in specifications and designs, contract terminations, change orders that are either in dispute or are unapproved as to both scope and price, or other causes of unanticipated additional contract costs. Claims are included in total estimated contract revenues when the contract or other evidence provides a legal basis for the claim, when the additional costs are caused by circumstances that were unforeseen at the contract date and are not the result of the deficiencies in the contract performance, when the costs associated with the claim are identifiable, and when the evidence supporting the claim is objective and verifiable. Revenue on claims is recognized only to the extent that contract costs related to the claims have been incurred and when it is probable that the claim will result in a bona fide addition to contract value which can be reliably estimated. No profit is recognized on claims until final settlement occurs. As a result, costs may be recognized in one period while revenues may be recognized when client agreement is obtained or claims resolution occurs, which can be in subsequent periods.
	“At-risk” and “Agency” Contracts. The amount of revenues we recognize also depends on whether the contract or project represents an at-risk or an agency relationship between the client and us. Determination of the relationship is based on characteristics of the contract or the relationship with the client. For at-risk relationships where we act as the principal to the transaction, the revenue and the costs of materials, services, payroll, benefits, and other costs are recognized at gross amounts. For agency relationships, where we act as an agent for our client, only the fee revenue is recognized, meaning that direct project costs and the related reimbursement from the client are netted. Revenues from agency contracts and collaborative arrangements were not a material part of revenues for any period presented.
	In classifying contracts or projects as either at-risk or agency, we consider the following primary characteristics to be indicative of at-risk relationships: (i) we acquire the related goods and services using our procurement resources, (ii) we assume the risk of loss under the contract and (iii) we are responsible for insurance coverage, employee-related liabilities and the performance of subcontractors.
	We consider the following primary characteristics to be indicative of agency relationships: (i) our client owns the work facilities utilized under the contract, (ii) we act as a procurement agent for goods and services acquired with client funds, (iii) our client is invoiced for our fees, (iv) our client is exposed to the risk of loss and maintains insurance coverage, and (v) our client is responsible for employee-related benefit plan liabilities and any remaining liabilities at the end of the contract.
	Contract Types
	Our contract types include cost-plus, target-price, fixed-price, and time-and-materials contracts. Revenue recognition is determined based on the nature of the service provided, irrespective of the contract type, with engineering, construction and construction-related contracts accounted for under the percentage-of-completion method and service-related contracts accounted for under the proportional performance method.
	Cost-Plus Contracts. We enter into four major types of cost-plus contracts. Revenue for the majority of our cost-plus contracts is recognized using the percentage-of-completion method:
	Cost-Plus Fixed Fee. Under cost-plus fixed fee contracts, we charge our clients for our costs, including both direct and indirect costs, plus a fixed negotiated fee.
	Cost-Plus Fixed Rate. Under our cost-plus fixed rate contracts, we charge clients for our direct costs plus negotiated rates based on our indirect costs.
	Cost-Plus Award Fee. Some cost-plus contracts provide for award fees or penalties based on performance criteria in lieu of a fixed fee or fixed rate. Other contracts include a base fee component plus a performance-based award fee. In addition, we may share award fees with subcontractors and/or our employees. We accrue fee sharing as related award fee revenue is earned. We take into consideration the award fee or penalty on contracts when estimating revenues and profit rates, and we record revenues related to the award fees when there is sufficient information to assess anticipated contract performance. On contracts that represent higher than normal risk or technical difficulty, we defer all award fees until an award fee letter is received. Once an award fee letter is received, the estimated or accrued fees are adjusted to the actual award amount.
	Cost-Plus Incentive Fee. Some of our cost-plus contracts provide for incentive fees based on performance against contractual milestones. The amount of the incentive fees varies, depending on whether we achieve above-, at- or below-target results. We recognize incentive fees revenues as milestones are achieved, assuming that we will achieve at-target results, unless our estimates indicate our cost at completion to be significantly above or below target.
	Target-Price Contracts. Under our target-price contracts, project costs are reimbursable. Our fee is established against a target budget that is subject to changes in project circumstances and scope. Should the project costs exceed the target budget within the agreed-upon scope, we generally degrade a portion of our fee or profit to mitigate the excess cost; however, the customer reimburses us for the costs that we incur if costs continue to escalate beyond our expected fee. If the project costs are less than the target budget, we generally recover a portion of the project cost savings as additional fee or profit. We recognize revenues on target-price contracts using the percentage-of-completion method.
	Fixed-Price Contracts. We enter into two major types of fixed-price contracts:
	Firm Fixed-Price (“FFP”). Under FFP contracts, our clients pay us an agreed fixed-amount negotiated in advance for a specified scope of work. We generally recognize revenues on FFP contracts using the percentage-of-completion method. If the nature or circumstances of the contract prevent us from preparing a reliable estimate at completion, we will delay profit recognition until adequate information about the contract's progress becomes available. Prior to completion, our recognized profit margins on any FFP contract depend on the accuracy of our estimates and will increase to the extent that our current estimates of aggregate actual costs are below amounts previously estimated. Conversely, if our current estimated costs exceed prior estimates, our profit margins will decrease and we may realize a loss on a project.
	Fixed-Price Per Unit (“FPPU”). Under our FPPU contracts, clients pay us a set fee for each service or production transaction that we complete. We recognize revenues under FPPU contracts as we complete the related service or production transactions for our clients generally using the proportional performance method. Some of our FPPU contracts are subject to maximum contract values.
	Time-and-Materials Contracts. Under our time-and-materials contracts, we negotiate hourly billing rates and charge our clients based on the actual time that we spend on a project. In addition, clients reimburse us for our actual out-of-pocket costs of materials and other direct incidental expenditures that we incur in connection with our performance under the contract. The majority of our time-and-material contracts are subject to maximum contract values and, accordingly, revenues under these contracts are generally recognized under the percentage-of-completion method. However, time-and-materials contracts that are service-related contracts are accounted for utilizing the proportional performance method. Revenues on contracts that are not subject to maximum contract values are recognized based on the actual number of hours we spend on the projects plus any actual out-of-pocket costs of materials and other direct incidental expenditures that we incur on the projects. Our time-and-materials contracts also generally include annual billing rate adjustment provisions.
	Segmenting and Combining Contracts
	Occasionally a contract may include several elements or phases, each of which was negotiated separately with our client and agreed to be performed without regard to the performance of others. We follow the criteria set forth in the accounting guidance when combining and segmenting contracts. When combining contracts, revenues and profits are earned and reported uniformly over the performance of the combined contracts. When segmenting contracts, we assign revenues and costs to the different elements or phases to achieve different rates of profitability based on the relative value of each element or phase to the estimated contract revenues. Values assigned to the segments are based on our normal historical prices and terms of such services to other clients. Also, a group of contracts may be so closely related that they are, in effect, part of a single project with an overall profit margin.
	Accounts Receivable and Costs and Accrued Earnings in Excess of Billings on Contracts
	Accounts receivable in the accompanying 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 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.
Accounts receivable and costs and accrued earnings in excess of billings on contracts include certain amounts recognized related to unapproved change orders (amounts representing the value of proposed contract modifications, but which are unapproved as to either price or scope) and claims, (change orders that are unapproved as to both price and scope) that have not been collected and, in the case of balances included in costs and 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. Most of those balances are not material and are typically resolved in the ordinary course of business.
Billings in Excess of Costs and Accrued Earnings on Contracts
Billings in excess of costs and accrued earnings on contracts in the accompanying Consolidated Balance Sheets is comprised 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 majority of the unearned project-related costs will be earned over the next twelve months.
We record provisions for estimated losses on uncompleted contracts in the period in which such losses become probable. The cumulative effects of revisions to contract revenues and estimated completion costs are recorded in the accounting period in which the amounts become probable and can be reasonably estimated. These revisions can include such items as the effects of change orders and claims, warranty claims, liquidated damages or other contractual penalties, adjustments for audit findings on U.S. or other government contracts and contract closeout settlements.
Receivable Allowances
We reduce our accounts receivable and costs and accrued earnings in excess of billings on contracts by estimating an allowance for amounts that may become uncollectible or unrealizable in the future. We determine our estimated allowance for uncollectible amounts based on management's judgments regarding our operating performance related to the adequacy of the services performed or products delivered, the status of change orders and claims, our experience settling change orders and claims and the financial condition of our clients, which may be dependent on the type of client and current economic conditions to which the client may be subject.
Classification of Current Assets and Liabilities
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. For contracts with terms that exceed one year, retentions are generally billed beyond a year from the service date. Our Unbilled Accounts Receivable include amounts related to milestone payment clauses, which may provide for payments to be received beyond a year from the date the Unbilled Accounts Receivable are recognized. Unbilled Accounts Receivable related to performance-based incentives that we do not expect to bill within twelve months of the balance sheet date are included in “Other long-term assets.” 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.
Subcontractor payables, subcontractor retentions, and billings in excess of costs and accrued earnings on contracts each contain amounts that, depending on contract performance, resolution of U.S. government contract audits, negotiations, change orders, claims or changes in facts and circumstances, may not require payment within one year.
Accounts receivable – retentions represent amounts billed to clients for services performed that, by the underlying contract terms, will not be paid until the projects meet contractual milestones, or are at or near completion. Correspondingly, subcontractors payable – retentions represent amounts billed to us by subcontractors for services performed that, by their underlying contract terms, do not require payment by us until the projects are at or near completion.
Accounts payable and subcontractors payable include our estimate of incurred but unbilled subcontractor costs.
Concentrations of Credit Risk
Our accounts receivable and costs and accrued earnings in excess of billings on contracts are potentially subject to concentrations of credit risk. Our credit risk on accounts receivable is limited due to the large number of contracts for clients that comprise our customer base and their dispersion across different business and geographic areas. We estimate and maintain an allowance for potential uncollectible accounts, and such estimates have historically been within management's expectations. See Note 4, “Accounts Receivable and Costs and Accrued Earnings in Excess of Billings on Contracts” for more details. Our cash and cash equivalents are maintained in accounts held by major banks and financial institutions located primarily in North America, Europe and Asia Pacific.
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 January 3, 2014 and December 28, 2012, restricted cash balances were $12.8 million and $17.1 million, respectively. These amounts were included in “Other current assets” on our Consolidated Balance Sheets. For cash held by our consolidated joint ventures, see Note 6, “Joint Ventures.”
Derivative Instruments
We are exposed to the risk of changes in interest rates on our long-term debt. Sometimes, we manage this risk through the use of derivative instruments. All derivative financial instruments are recorded on the balance sheet at fair value. At dates entered into, the derivatives hedge the variability in cash flows received or paid in connection with a recorded asset or liability.
Changes in the fair value of cash flow hedges are recorded in other comprehensive income until earnings are affected by the variability of cash flows of the hedged transactions. We would discontinue hedge accounting prospectively when the derivatives are no longer effective in offsetting changes in cash flows of the hedged items, the derivatives are sold or terminated or it is no longer probable that the forecasted transactions will occur. Cash flows resulting from derivatives that are accounted for as hedges may be classified in the same category as the cash flows from the items being hedged.
We use derivative instruments only for risk management purposes and not for speculation or trading. The amount, maturity, and other specifics of the hedge, if any, are determined by the specific derivative instrument. If a derivative contract is entered into, we either determine that it is an economic hedge or we designate the derivative as a cash flow or fair value hedge. We formally document all relationships between hedging instruments and the hedged items, as well as our risk management objectives and strategies for undertaking various hedged transactions. For those derivatives designated as cash flow or fair value hedges, we formally assess, both at the derivatives' inception and on an ongoing basis, whether the derivatives that are used in hedging transactions are highly effective in offsetting changes in the hedged items. The ineffective portion of hedging transactions is recognized in current income.
Fair Value Measurement
We determine the fair values of our financial instruments, including debt instruments and pension and post-retirement plan assets based on inputs or assumptions that market participants would use in pricing an asset or a liability. We categorize our instruments using a valuation hierarchy for disclosure of the inputs used to measure fair value. This hierarchy prioritizes the inputs into three broad levels as follows: Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities; Level 2 inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument; Level 3 inputs are unobservable inputs based on our own assumptions used to measure assets and liabilities at fair value. The classification of a financial asset or liability within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement.
The recorded values of cash and cash equivalents, accounts receivable, and accounts payable approximate fair values based on their short-term nature.
Our long-term debt includes both floating-rate and fixed rate instruments. See Note 12, “Fair Value of Debt Instruments and Derivative Instruments,” for additional disclosure.
Our fair value measurement methods may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Although we believe our valuation methods are appropriate and consistent with those used by other market participants, the use of different methodologies or assumptions to determine fair value could result in a different fair value measurement at the reporting date.
Inventory
Inventory is stated at cost (first-in, first-out or average cost), but not in excess of net realizable value. Net realizable value represents the estimated selling price for inventory less the estimated costs of completion and the estimated costs associated with the sale. The cost of inventory includes expenditures incurred in acquiring the inventory, production or conversion costs, and other costs incurred in bringing the inventory items to their existing location and condition. For fabricated inventory and work in progress, cost includes overhead allocated based on normal operating capacity. A write down for excess or inactive inventory is recorded based upon an analysis that considers current inventory levels, historical usage patterns, future sales expectations and salvage value. See Note 5, “Inventory,” for additional disclosure.
Property and Equipment
Property and equipment are stated at cost. In the year assets are retired or otherwise disposed of, the costs and related accumulated depreciation are removed from the accounts and any gain or loss on disposal is reflected in the Consolidated Statement of Operations. Depreciation is provided on the straight-line and the declining methods using estimated useful lives less residual value. Leasehold improvements are amortized over the length of the lease or estimated useful life, whichever is less. We capitalize our repairs- and maintenance-related costs that extend the estimated useful lives of property and equipment; otherwise, repairs- and maintenance-related costs are expensed. Whenever events or changes in circumstances indicate that the carrying amount of long-lived assets may not be recoverable, we compare the carrying value to the fair value, which is measured using the prices in active markets for similar assets, and recognize the difference as an impairment loss. See Note 7, “Property and Equipment,” for additional disclosure.
Internal-Use Computer Software
We expense or capitalize costs associated with the development of internal-use software as follows:
Preliminary Project Stage: Both internal and external costs incurred during this stage are expensed as incurred.
Application Development Stage: Both internal and external costs incurred to purchase and develop computer software are capitalized after the preliminary project stage is completed and management authorizes the computer software project. However, training costs and the process of data conversion from the old system to the new system, which includes purging or cleansing of existing data, reconciliation or balancing of old data to the converted data in the new system, are expensed as incurred.
Post-Implementation/Operation Stage: All training costs and maintenance costs incurred during this stage are expensed as incurred.
Costs of upgrades and enhancements are capitalized if the expenditures will result in adding functionality to the software. Capitalized software costs are depreciated using the straight-line method over the estimated useful life of the related software, which may be up to ten years.
Goodwill and Intangible Assets
We amortize our intangible assets based on the period over which the contractual or economic benefits of the intangible assets are expected to be realized. We assess our intangible assets for impairment whenever events or changes in circumstances indicate that the carrying value of an intangible asset may not be recoverable.
Goodwill represents the excess of the cost of an acquired entity over the net of the amounts assigned to assets acquired and liabilities assumed. Goodwill is allocated to the reporting units based on the respective fair values of the reporting units at the time of the various acquisitions that gave rise to the recognition of goodwill or at the time of a reorganization which impacts the composition of the reporting units. We assess our goodwill for impairment at least annually as of the end of the first month following our September reporting period or whenever events or changes in circumstances indicate that the carrying value of the asset may not be recoverable.
We believe the methodology that we use to review impairment of goodwill, which includes a significant amount of judgment and estimates, provides us with a reasonable basis to determine whether impairment has occurred. However, many of the factors employed in determining whether our goodwill is impaired are outside of our control and it is reasonably likely that assumptions and estimates will change in future periods. These changes could result in future impairments.
Goodwill impairment reviews involve a two-step process. The first step is a comparison of each reporting unit's fair value to its carrying value. We estimate fair value using both the income approach and the market approach.
If the carrying value of the reporting unit is higher than its fair value, there is an indication that impairment may exist and the second step must be performed to measure the amount of impairment. The amount of impairment is determined by comparing the implied fair value of the reporting unit's goodwill to the carrying value of the goodwill calculated in the same manner as if the reporting unit were being acquired in a business combination. If the implied fair value of goodwill is less than the recorded goodwill, we would record an impairment charge for the difference.
There are several instances that may cause us to further test our goodwill for impairment between the annual testing periods including: (i) continued deterioration of market and economic conditions that may adversely impact our ability to meet our projected results; (ii) declines in our stock price caused by continued volatility in the financial markets that may result in increases in our weighted-average cost of capital or other inputs to our goodwill assessment; and (iii) the occurrence of events that may reduce the fair value of a reporting unit below its carrying amount, such as the sale of a significant portion of one or more of our reporting units.
If our goodwill were impaired, we would be required to record a non-cash charge that could have a material adverse effect on our consolidated financial statements.
See Note 9, “Goodwill and Intangible Assets,” for more disclosure about our test for goodwill impairment.
Self-insurance Reserves
Self-insurance reserves represent reserves established as a result of insurance programs under which we self-insure portions of our business risks. We carry substantial premium-paid, traditional risk transfer insurance for our various business risks; however, we self-insure and establish reserves for the retentions on workers' compensation insurance, general liability, automobile liability, and professional errors and omissions liability.
Foreign Currency Translation
We determine the functional currency of our international operating entities based upon the currency of the primary environment in which they operate. Where the functional currency is not the U.S. dollar, translation of assets and liabilities to U.S. dollars is based on exchange rates at the balance sheet date. Translation of revenue and expenses to U.S. dollars is based on the average rate during the period. Foreign currency differences arising from transactions denominated in currencies other than the functional currency, such as selling services or purchasing materials, results in transaction gains or losses, and are generally included in results of operations.
Foreign currency differences arising from the translation of intercompany loans from a foreign currency into the functional currency of an entity, which are of a long-term investment nature (that is, settlement is not planned or anticipated in the foreseeable future) are recorded in “Accumulated other comprehensive income (loss)” on our Consolidated Balance Sheets. Foreign currency differences arising from the translation of other intercompany loans are recorded in “Other income (expense)” on our Consolidated Statements of Operations.
Income Taxes
We use the asset and liability approach for financial accounting and reporting for income taxes. We file income, franchise, gross receipts and similar tax returns in many jurisdictions. Our tax returns are subject to audit by the Internal Revenue Service, most states in the U.S., and by various government agencies representing many jurisdictions outside the U.S. We estimate and provide for additional income taxes that may be assessed by the various taxing authorities. Deferred income tax assets and liabilities are computed annually for differences between the financial statement and tax bases of assets and liabilities that will result in taxable or deductible amounts in the future based on enacted tax laws and rates applicable to the periods in which the differences are expected to affect taxable income. See Note 13, “Income Taxes,” for additional disclosure.
Valuation allowances based on our judgments and estimates are established when necessary to reduce deferred tax assets to the amount expected to be realized and based on expected future operating results and available tax alternatives. Our estimates are based on facts and circumstances in existence as well as interpretations of existing tax regulations and laws applied to the facts and circumstances. Management believes that realization of deferred tax assets in excess of the valuation allowance is more likely than not.
Pension Plans and Post-retirement Benefits
We account for our defined benefit pension plans and post-retirement benefits using actuarial valuations that are based on assumptions, including discount rates, long-term rates of return on plan assets, and rates of change in participant compensation levels. We evaluate the funded status of each of our defined benefit pension plans and post-retirement benefit plans using these assumptions, consider applicable regulatory requirements, tax deductibility, reporting considerations and other relevant factors, and thereby, determine the appropriate funding level for each period. The discount rate used to calculate the present value of the pension and post-retirement benefit obligations is assessed at least annually. The discount rate represents the rate inherent in the price at which the plans' obligations are intended to be settled at the measurement date. See Note 14, “Employee Retirement and Post-Retirement Benefit Plans,” for additional disclosure.
Noncontrolling interests
Noncontrolling interests represent the equity investments of the minority owners in our joint ventures and other subsidiary entities that we consolidate in our financial statements.
Business Combinations
We account for business combinations under the purchase accounting method. The cost of an acquired company is assigned to the tangible and intangible assets purchased and the liabilities assumed on the basis of their fair values at the date of acquisition. The determination of fair values of assets and liabilities acquired requires us to make estimates and use valuation techniques when market value is not readily available. Any excess of purchase price over the fair value of net tangible and intangible assets acquired is allocated to goodwill. The transaction costs associated with business combinations are expensed as they are incurred. See Note 8, “Acquisitions,” for more information.

ADOPTED_AND_OTHER_RECENTLY_ISS

ADOPTED AND OTHER RECENTLY ISSUED STATEMENTS OF FINANCIAL ACCOUNTING STANDARDS	12 Months Ended
	Jan. 03, 2014
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 18, “Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Income (Loss),” for more information. The adoption of this standard did not have a material impact on our 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 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. The adoption of this standard did not have a material impact on our consolidated financial statements.
	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 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 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 consolidated financial statements.

EARNINGS_PER_SHARE

EARNINGS PER SHARE	12 Months Ended
	Jan. 03, 2014
Notes to Financial Statements [Abstract]	'
EARNINGS PER SHARE	'
	NOTE 3. EARNINGS PER SHARE
	In our computation of diluted EPS, we exclude the potential shares related to nonvested restricted stock awards and units that have an anti-dilutive effect on EPS or that currently have not met performance conditions.
	The following table summarizes the components of weighted-average common shares outstanding for both basic and diluted EPS:
			Year Ended
			January 3,		December 28,		December 30,
	(In millions)		2014		2012		2011
	Weighted-average common stock shares outstanding (1)		73.9		74.3		77.3
	Effect of dilutive restricted stock awards and units and employee stock purchase plan shares (2)		0.8		0.2		—
	Weighted-average common stock outstanding – Diluted		74.7		74.5		77.3
	Weighted-average shares of common stock outstanding is net of treasury stock and excludes nonvested restricted stock awards.
	No dilution was applied to our basic weighted-average shares outstanding for the year ended December 30, 2011, due to a goodwill impairment charge that resulted in a net loss for the year.
			January 3,	December 28,		December 30,
		(In millions)	2014	2012		2011
		Anti-dilutive equity awards not included above	—†	1.1		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	12 Months Ended
	Jan. 03, 2014
Notes to Financial Statements [Abstract]	'
ACCOUNTS RECEIVABLE AND COSTS AND ACCRUED EARNINGS IN EXCESS OF BILLINGS ON CONTRACTS	'
		(In millions)				Amounts included in “Other long-term assets”			Amounts included in “Other long-term liabilities"
		Balances as of December 30, 2011				$	185		$	105.6
			Additions				209.2			38.9
			Reclassification from long-term to short-term				-129.3			-37.5
		Balances as of December 28, 2012					264.9			107
			Additions				241.7			59.7
			Reclassification from long-term to short-term				-375.5			-164.5
		Balances as of January 3, 2014				$	131.1		$	2.2
	NOTE 4. ACCOUNTS RECEIVABLE AND COSTS AND ACCRUED EARNINGS IN EXCESS OF BILLINGS ON CONTRACTS
	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 January 3, 2014 and December 28, 2012:
							January 3,			December 28,
		(In millions)					2014			2012
		Accounts receivable:
				U.S. federal government			$	353.2		$	376.2
				Others				1,039.40			1,178.60
					Total accounts receivable		$	1,392.60		$	1,554.80
		Unbilled Accounts Receivable:
				U.S. federal government			$	855.7		$	892.7
				Others				796.9			756.5
					Total			1,652.60			1,649.20
					Less: Amounts included in Other long-term assets			-131.1			-264.9
					Unbilled Accounts Receivable		$	1,521.50		$	1,384.30
	As of January 3, 2014 and December 28, 2012, $131.1 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 January 3, 2014 and December 28, 2012, we reclassified unbilled amounts representing performance-based incentive fee receivables from our work managing chemical demilitarization and nuclear management and decommissioning programs from “Other long-term assets” to Unbilled Accounts Receivable.
	We are required contractually to share a portion of the performance-based incentive fees with our employees and subcontractors for some of our projects. These liabilities are accrued concurrently with the related receivables and are not expected to be paid until after the fees are collected, and, as a result, are originally included as a component of “Other long-term liabilities.” As the underlying performance-based incentive fee receivables become current and are reclassified from “Other long-term assets” to Unbilled Accounts Receivable, the corresponding liabilities are also reclassified from “Other long-term liabilities” to “Other current liabilities.”
	The following table summarizes the activities of Unbilled Accounts Receivable included in “Other long-term assets” and the corresponding liabilities included in “Other long-term liabilities” for our fiscal years 2013 and 2012:
		(In millions)				Amounts included in “Other long-term assets”			Amounts included in “Other long-term liabilities"
		Balances as of December 30, 2011				$	185		$	105.6
			Additions				209.2			38.9
			Reclassification from long-term to short-term				-129.3			-37.5
		Balances as of December 28, 2012					264.9			107
			Additions				241.7			59.7
			Reclassification from long-term to short-term				-375.5			-164.5
		Balances as of January 3, 2014				$	131.1		$	2.2
	As of January 3, 2014 and December 28, 2012, “Other current liabilities” included $190.4 million and $51.6 million, respectively, related to performance-based incentive fees payable to our employees and subcontractors.
	As of January 3, 2014 and December 28, 2012, we had one project with accounts receivable balances of $81.5 million and $32.6 million, respectively, relating to an outstanding claim. See Note 17, “Commitments and Contingencies,” for further discussion regarding the Department of Energy (“DOE”) Deactivation, Demolition, and Removal Project.

INVENTORY

INVENTORY	12 Months Ended
	Jan. 03, 2014
Notes to Financial Statements [Abstract]	'
INVENTORY	'
	NOTE 5. INVENTORY
	The table below presents the components of inventory
				January 3,		December 28,
		(In millions)		2014		2012
		Raw materials		$	8.5	$	14.2
		Work in progress			7.4		9.8
		Finished goods			23.2		24.9
		Supplies			10.1		12.6
			Total	$	49.2	$	61.5

JOINT_VENTURES

JOINT VENTURES	12 Months Ended
	Jan. 03, 2014
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 and operation services, including commercial operations, decontamination, decommissioning, and waste management of a nuclear facility in the United Kingdom (“U.K.”); and
	Operations, maintenance, asset 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 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 year ended January 3, 2014.
	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:
						January 3,		December 28,
		(In millions)				2014		2012
		Cash and cash equivalents				$	89.4	$	80.1
		Net accounts receivable					199.7		282.2
		Other current assets					3		2.9
		Noncurrent assets					143.1		143.3
					Total assets	$	435.2	$	508.5
		Accounts and subcontractors payable				$	94.9	$	185
		Billings in excess of costs and accrued earnings on contracts					14.9		8.7
		Accrued expenses and other					39.5		40
		Noncurrent liabilities					11.9		22.7
			Total liabilities				161.2		256.4
		Total URS equity					128.2		110.2
		Noncontrolling interests					145.8		141.9
			Total owners’ equity				274		252.1
					Total liabilities and owners’ equity	$	435.2	$	508.5
	Total revenues of the consolidated joint ventures were $1.1 billion, $1.6 billion, and $1.7 billion for the years ended January 3, 2014, December 28, 2012, and December 30, 2011, 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 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:
		(In millions)	Unconsolidated VIEs
		3-Jan-14
		Current assets	$	615.6
		Noncurrent assets	$	36.8
		Current liabilities	$	433.2
		Noncurrent liabilities	$	7
		28-Dec-12
		Current assets	$	594.1
		Noncurrent assets	$	23.8
		Current liabilities	$	372.5
		Noncurrent liabilities	$	7.8
		For the year ended January 3, 2014 (1)
		Revenues	$	2,154.30
		Cost of revenues	$	-1,909.00
		Income from continuing operations before tax	$	245.3
		Net income	$	218.9
		For the year ended December 28, 2012 (1)
		Revenues	$	1,662.20
		Cost of revenues	$	-1,440.60
		Income from continuing operations before tax	$	221.6
		Net income	$	206
		For the year ended December 30, 2011 (1)
		Revenues	$	1,498.00
		Cost of revenues	$	-1,201.50
		Income from continuing operations before tax	$	296.5
		Net income	$	274.7
	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.
	For the years ended January 3, 2014, December 28, 2012, and December 30, 2011, we received $113.0 million, $88.7 million, and $107.3 million, respectively, of distributions from unconsolidated joint ventures.
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 scope of 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 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	12 Months Ended
	Jan. 03, 2014
Notes to Financial Statements [Abstract]	'
PROPERTY AND EQUIPMENT	'
	NOTE 7. PROPERTY AND EQUIPMENT
	Our property and equipment consisted of the following:
				January 3,		December 28,
		(In millions)		2014		2012
		Construction and mining equipment		$	244.4	$	266.4
		Computer software			238.9		219.5
		Computer hardware			216.1		198.2
		Vehicles and automotive equipment			171.6		172.2
		Leasehold improvements			141.9		130.1
		Land and buildings			100.2		114.1
		Furniture and fixtures			94.7		97.7
		Other equipment			67.5		72.4
		Construction in progress			9.3		15.6
					1,284.60		1,286.20
		Accumulated depreciation and amortization			-676.5		-598.7
			Property and equipment, net (1)	$	608.1	$	687.5
	The unamortized computer software costs were $76.0 million and $71.1 million, respectively, as of January 3, 2014 and December 28, 2012.
	We recorded a gain of $25.4 million on disposal of property and equipment for the year ended January 3, 2014 mainly resulting from the sale of equipment, land and buildings in Canada. This gain was recorded in “Cost of revenues” on our Consolidated Statements of Operations.
	Property and equipment was depreciated by using the following estimated useful lives:
			Estimated Useful Lives
		Computer software and hardware and other equipment	3 – 10 years
		Vehicles and automotive equipment	3 – 12 years
		Construction and mining equipment	3 – 15 years
		Furniture and fixtures	3 – 10 years
		Leasehold improvements (1)	1 – 20 years
		Buildings	10 – 45 years
	Leasehold improvements are amortized over the length of the lease or estimated useful life, whichever is less.

ACQUISITION

ACQUISITION	12 Months Ended
	Jan. 03, 2014
Notes to Financial Statements [Abstract]	'
ACQUISITION	'
	NOTE 8. ACQUISITIONS
	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 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. On the date of acquisition, Flint had outstanding Canadian Notes with a face value of C$175.0 million (US$175.0 million), in addition to $31.6 million of other indebtedness. Our consolidated financial statements include the operating results of Flint after the date of acquisition, the majority of which are included as the results of our Oil & Gas Division.
	The following table presents the allocation of Flint's identifiable assets acquired and liabilities assumed based on the estimates of their fair values as of the acquisition date.
		Final allocation of purchase price:
		(In millions)
		Identifiable assets acquired and liabilities assumed:
				Cash and cash equivalents							$	4
				Trade and other receivables								544
				Inventory								61
				Other current assets								32
				Investments in and advances to unconsolidated joint ventures								147
				Property and equipment								420
				Other long-term assets								10
				Identifiable intangible assets:
						Customer relationships, contracts and backlog						163
						Trade names						93
						Other						10
								Total amount allocated to identifiable intangible assets				266
				Current liabilities								-244
				Net deferred tax liabilities								-77
				Long-term debt								-236
				Other long-term liabilities								-31
								Total identifiable net assets acquired				896
		Goodwill										456
								Total purchase price			$	1,352
	Intangible assets.  Intangible assets include customer relationships, contracts and backlog, trade name and other intangible assets associated with the Flint acquisition.
	Customer relationships represent existing contracts and the underlying customer relationships and backlog. Customer relationships have estimated useful lives ranging from one to 13 years and are amortized based on the period over which the economic benefits of the intangible assets are expected to be realized.
	Trade names represent the fair values of the acquired trade names and trademarks. The estimated useful lives of the trade names are 20 years. Other intangible assets represent the fair values of the existing non-compete agreements, supply contract agreement, and patents, which have estimated useful lives ranging from one to 13 years. We amortize the fair values of these intangible assets based on the period over which the economic benefits of the intangible assets are expected to be realized.
	Goodwill.  Goodwill represents the excess of the purchase price over the fair value of the underlying net tangible and intangible assets. The factors that contributed to the recognition of goodwill from the acquisition of Flint include acquiring a workforce with capabilities in the oil and gas market and cost savings opportunities. This acquisition generated $456 million of goodwill, the majority of which is included in our Oil & Gas Division. None of the total acquired goodwill is expected to be tax deductible.
	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 which 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 years ended January 3, 2014 and December 28, 2012, amortization of these intangible assets was $10.3 million and $5.9 million, respectively.
	Acquisition-related expenses. In connection with the acquisition of Flint, we recognized $16.1 million for the year ended December 28, 2012 in “Acquisition-related expenses” on our Consolidated Statements of Operations.
	The acquisition related expenses consisted of investment banking, legal, tax and accounting fees, and other external costs directly related to the acquisition.
	Flint's revenues and operating income included in the Consolidated Statement of Operations for the year ended December 28, 2012 from the May 14, 2012 acquisition to the end of the year amounted to $1.5 billion and $61.2 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 years ended December 28, 2012 and December 30, 2011, on a pro forma basis, as though the companies had been combined as of January 1, 2011, the beginning of the first period presented. 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 January 1, 2011 nor should it be taken as indicative of our future consolidated results of operations.
						Year Ended			Year Ended
		(In millions, except per share data)				28-Dec-12			30-Dec-11
		Revenues				$	11,785.80		$	11,128.70
		Net income (loss) including noncontrolling interests				$	409.1		$	-6.9
		Net income (loss) attributable to URS				$	292.9		$	-135.4
		Earnings (loss) per share:
			Basic EPS			$	3.94		$	-1.75
			Diluted EPS			$	3.93		$	-1.75
	The table below shows the material pre-tax, nonrecurring adjustment in the pro forma financial information for the years ended December 28, 2012 and December 30, 2011:
		Pre-tax, nonrecurring adjustment (In millions)			Year Ended			Year Ended
						28-Dec-12			December 30, 2011 (1)
		Acquisition-related expenses			$	27.7		$	-27.5
	Included in the pro forma results for the year ended December 30, 2011 is a nonrecurring adjustment related to URS and Flint acquisition-related expenses. These expenses were included in the fiscal year 2011 pro forma results as if the acquisition occurred at the beginning of that fiscal year.

GOODWILL

GOODWILL	12 Months Ended
	Jan. 03, 2014
Notes to Financial Statements [Abstract]	'
GOODWILL	'
	NOTE 9. GOODWILL AND INTANGIBLE ASSETS
	Goodwill
	The following tables present the changes in goodwill allocated to our reportable segments and reporting units from December 30, 2011 to January 3, 2014:
	(In millions)								Goodwill Balance as of December 30, 2011 (1)			Acquisitions			Inter-segment Transfer (2)			Other Adjustments (3)		Goodwill Balance as of December 28, 2012
	Infrastructure & Environment Operating Segment								$	758.2		$	—		$	-21.5		$	14.8	$	751.5
	Within the Federal Services Operating Segment:
			Federal Services Group							705.6			—			—			1.7		707.3
			Global Management and Operations Services Group							565.4			—			—			—		565.4
					Total Federal Services Operating Segment					1,271.00			—			—			1.7		1,272.70
	Within the Energy & Construction Operating Segment:
			Civil Construction & Mining Group							293.9			—			—			—		293.9
			Industrial/Process Group							189.3			67.8			-4.2			—		252.9
			Power Group							735.1			—			—			—		735.1
					Total Energy & Construction Operating Segment					1,218.30			67.8			-4.2			—		1,281.90
	Oil & Gas Operating Segment									—			388.5			25.7			1.3		415.5
							Total		$	3,247.50		$	456.3		$	—		$	17.8	$	3,721.60
	Balances as of December 30, 2011 reflect the realignment of our business as further described in Note 16, “Segment and Related Information.” Of the goodwill, $565.4 million related to our Global Management and Operations Services Group was transferred from the Energy & Construction Division to the Federal Services Division.
	For the year ended December 28, 2012, “Inter-segment transfers” include adjustments of $21.5 million to transfer process engineering, and $4.2 million related to the realignment of operations and maintenance services to the oil and gas industry among our Oil & Gas, Infrastructure & Environment, and Energy & Construction Divisions.
	For the year ended December 28, 2012, “Other adjustments” include an adjustment for foreign currency translation of $16.1 million, and an adjustment for the final allocation of our purchase price of Apptis of $1.7 million.
	(In millions)								Goodwill Balance as of December 28, 2012			Acquisitions			Other Adjustments (1)			Goodwill Balance as of January 3, 2014
	Infrastructure & Environment Operating Segment								$	751.5		$	—		$	-14.1		$	737.4
	Within the Federal Services Operating Segment:
			Federal Services Group							707.3			—			—			707.3
			Global Management and Operations Services Group							565.4			—			—			565.4
					Federal Services Operating Segment					1,272.70			—			—			1,272.70
	Within the Energy & Construction Operating Segment:
			Civil Construction & Mining Group							293.9			—			—			293.9
			Industrial/Process Group							252.9			—			-3.2			249.7
			Power Group							735.1			—			—			735.1
					Total Energy & Construction Operating Segment					1,281.90			—			-3.2			1,278.70
	Oil & Gas Operating Segment									415.5			—			-8.7			406.8
							Total		$	3,721.60		$	—		$	-26		$	3,695.60
	For the year ended January 3, 2014, “Other adjustments” include an adjustment for foreign currency translation of $26.0 million.
	The net change in the carrying amount of goodwill for the year ended December 28, 2012 was primarily due to our acquisition of Flint. See Note 8, “Acquisitions,” for more information regarding our acquisition of Flint.
	Goodwill Impairment Review
	In performing our goodwill impairment test, we evaluate goodwill at the reporting unit level. We have identified seven reporting units. In determining our reporting units, we considered (i) whether an operating segment or a component of an operating segment is a business, (ii) whether discrete financial information is available, (iii) whether the financial information is regularly reviewed by management of the operating segment, and (iv) how the operations are managed or how an acquired entity is integrated in the business operations. The following are our reporting units:
	The Infrastructure & Environment Operating Segment (the “IE reporting unit”)
	Within the Federal Services Operating Segment:
	Federal Services Group
	Global Management and Operations Services Group
	Within the Energy & Construction Operating Segment:
	Civil Construction and Mining Group
	Industrial/Process Group
	Power Group
	The Oil & Gas Operating Segment
	In reaching our estimate of fair 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.
	The fair value measurements from the income approach were calculated using unobservable inputs to our discounted cash flows, which are classified as Level 3 within the fair value hierarchy. 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 the cash flow projections used in the calculation of fair values for our goodwill impairment review, we use market participant estimates of economic and market activity for the next ten years. The key assumptions we used to estimate the fair values of our reporting units are:
	Revenue growth rates;
	Operating margins;
	Capital expenditure needs;
	Working capital requirements;
	Discount rates; and
	Terminal value capitalization rate (“Capitalization Rate”)
	Of the key assumptions, the discount rates and the Capitalization Rate are market-driven. These rates are derived from the use of market data and employment of the weighted-average cost of capital. The key assumptions that are company-driven include the revenue growth rates and the projected operating margins. They reflect the influence of other potential assumptions, since the assumptions we identified that affect the projected operating results would ultimately affect either the revenue growth or the profitability (operating margin) of the reporting unit. For example, any adjustment to contract volume and pricing would have a direct impact on revenue growth, and any adjustment to the reporting unit's cost structure or operating leverage would have a direct impact on the profitability of the reporting unit. Actual results may differ from those assumed in our forecasts and changes in assumptions or estimates could materially affect the determination of the fair value of a reporting unit, and therefore could affect the amount of potential impairment.
	We also consider indications obtained from the market approach. We applied market multiples derived from stock market prices 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, and applied market multiples derived from transactions of significant interests in companies engaged in the same or similar lines of business as our reporting units, and a control premium to arrive at the fair values.
	When performing our impairment analysis, we also reconcile the sum of the fair values of our reporting units with our market capitalization to determine if the sum reasonably reconciles with the external market indicators. If our reconciliation indicates a significant difference between our external market capitalization and the sum of the fair values of our reporting units, we review and adjust the assumptions employed in our analysis, and examine if the implied control premium is reasonable in light of current market conditions.
	Goodwill was allocated to the reporting units based upon the respective fair values of the reporting units at the time of the various acquisitions that gave rise to the recognition of goodwill or at the time of a reorganization, which impacts the composition of the reporting units.
	We perform our annual goodwill impairment review as of the end of the first month following our September reporting period and also perform interim impairment reviews if triggering events occur. Our 2013 annual review was performed as of October 25, 2013, which indicated no impairment in any of our reporting units. No events or changes in circumstances have occurred that would indicate any impairment of goodwill exists since our annual testing date.
	During fiscal year 2011, our market capitalization was reduced due to the stock market volatility and declines in our stock price. For the year ended December 30, 2011, we recorded a goodwill impairment charge in one of our reporting units totaling $351.3 million ($309.4 million after tax). This non-cash charge reduced goodwill recorded in connection with a previous acquisition and did not impact our overall business operations.
	Our annual impairment test indicated no impairment for any of the reporting units because the fair value of each reporting unit substantially exceeded its carrying value.
		(In millions)				Goodwill Balance as of January 3, 2014			Reporting Unit Fair Value			Reporting Unit Carrying Value			Percent Above Carrying Value
		Infrastructure & Environment Operating Segment				$	758.9		$	2,173.00		$	1,509.30			44.00%
		Federal Services Operating Segment					707.3			1,646.00			1,011.60			62.70%
	Within the Energy & Construction Operating Segment:
		Global Management and Operations Services Group				565.4			1,398.00			925.3			51.10%
		Civil Construction & Mining Group				293.9			457			363			25.90%
		Industrial/Process Group				189.3			392			239			64.00%
		Power Group				735.1			952			823.9			15.50%
			Total Energy & Construction Operating Segment			1,783.70			3,199.00			2,351.20			36.10%
	Oil & Gas Operating Segment					445.7			1,664.00			1,366.60			21.80%
	Total				$	3,695.60		$	8,682.00		$	6,238.70			39.20%
Intangible Assets
Intangible assets are comprised of customer relationships, contracts, backlog, trade name, favorable leases and other. As of January 3, 2014 and December 28, 2012, the cost and accumulated amortization of our intangible assets were as follows:
(In millions)						Customer Relationships, Contracts, and Backlog			Trade Name			Favorable Leases and Other			Total
Balance as of December 30, 2011						$	491.1		$	25.6		$	5.3		$	522
	Acquisitions						163			93.5			9.8			266.3
	Amortization expense						-93.9			-4.8			-2.5			-101.2
	Other adjustments and foreign currency translation						3.3			1.7			0.1			5.1
Balance as of December 28, 2012							563.5			116			12.7			692.2
	Amortization expense						-100.3			-5.5			-1.6			-107.4
	Other adjustments and foreign currency translation						-5.1			-4.6			-5.4			-15.1
Balance as of January 3, 2014						$	458.1		$	105.9		$	5.7		$	569.7
Estimated useful lives							1 - 16 years			1 - 20 years (1)			1 - 13 years
During the fourth quarter of 2013, we revised the estimated useful life of the Flint trade name from 40 years to 20 years due to a change in our intended use.
Our amortization expense related to intangible assets was $107.4 million, $101.2 million, and $60.6 million, respectively, for the years ended January 3, 2014, December 28, 2012, and December 30, 2011.
The following table presents the estimated future amortization expense of intangible assets:
	(In millions)						Customer Relationships, Contracts, and Backlog			Trade Name			Favorable Leases and Other			Total
	2014						$	87.5		$	5.9		$	1.1		$	94.5
	2015							77			6.3			0.7			84
	2016							71.9			6.3			0.6			78.8
	2017							66.6			6.3			0.1			73
	2018							48.2			6.3			0.4			54.9
	Thereafter							106.9			74.8			2.8			184.5
							$	458.1		$	105.9		$	5.7		$	569.7

BILLINGS_IN_EXCESS_OF_COSTS_AN

BILLINGS IN EXCESS OF COSTS AND ACCRUED EARNINGS ON CONTRACTS	12 Months Ended
	Jan. 03, 2014
Notes to Financial Statements [Abstract]	'
BILLINGS IN EXCESS OF COSTS AND ACCRUED EARNINGS ON CONTRACTS	'
	NOTE 10. BILLINGS IN EXCESS OF COSTS AND ACCRUED EARNINGS ON CONTRACTS
	The following table summarizes the components of billings in excess of costs and accrued earnings on contracts:
				January 3,		December 28,
		(In millions)		2014		2012
		Billings in excess of costs and accrued earnings on contracts		$	193.1	$	211.7
		Project-related legal liabilities and other project-related reserves			28		55.2
		Advance payments negotiated as a contract condition			6.4		9.8
		Normal profit liabilities			0.8		4.8
		Estimated losses on uncompleted contracts			4.8		7.6
			Total	$	233.1	$	289.1

INDEBTEDNESS

INDEBTEDNESS	12 Months Ended
	Jan. 03, 2014
Notes to Financial Statements [Abstract]	'
INDEBTEDNESS	'
	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.
	We had no outstanding debt balances on our revolving line of credit as of January 3, 2014. We had outstanding debt balances of $100.5 million on our revolving line of credit as of December 28, 2012. As of January 3, 2014, we had issued $108.3 million of letters of credit, leaving $891.7 million available under our revolving credit facility.
	A summary of information regarding our revolving line of credit is set forth below:
			Year Ended
			January 3,			December 28,
		(In millions, except percentages)	2014			2012
		Effective average interest rates on the revolving line of credit		2.40%			1.90%
		Average daily revolving line of credit balances	$	135.2		$	139.5
		Maximum amounts outstanding at any point during the year	$	236.4		$	420
	NOTE 11. INDEBTEDNESS
	Indebtedness consisted of the following:
					January 3,			December 28,
		(In millions)			2014			2012
		Term loan, net of debt issuance costs			$	601.8		$	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)				—			203.8
		Revolving line of credit				—			100.5
		Other indebtedness				110.6			94.7
			Total indebtedness			1,711.50			2,064.30
		Less:
		Current portion of long-term debt				44.6			71.8
			Long-term debt		$	1,666.90		$	1,992.50
	2011 Credit Facility
	As of January 3, 2014 and December 28, 2012, the outstanding balance of the term loan under our 2011 Credit Facility was $605.0 million and $670.0 million, respectively. As of January 3, 2014 and December 28, 2012, the interest rates applicable to the term loan were 1.67% and 1.71%, respectively. Loans outstanding under our 2011 Credit Facility bear interest, at our option, at the base rate or at the London Interbank Offered Rate (“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 December 19, 2013, we entered into an amendment to our 2011 Credit Facility that extended the maturity date by two years to December 19, 2018, increased the sublimit for alternative currency revolving loans from $400.0 million to $500.0 million, established a $500.0 million sublimit for financial letters of credit, and increased a restricted payment basket from $150 million to $200 million in any fiscal year. We have an option to prepay the term loans at any time without penalty.
	Under our 2011 Credit Facility, we are subject to financial covenants and other customary non-financial covenants. Our financial covenants include a maximum consolidated leverage ratio, which is calculated by dividing total debt by earnings before interest, taxes, depreciation and amortization (“EBITDA”), as defined below, and a minimum interest coverage ratio, which is calculated by dividing cash interest expense into EBITDA. Both calculations are based on the financial data of our most recent four fiscal quarters.
	For purposes of our 2011 Credit Facility, consolidated EBITDA is defined as consolidated net income attributable to URS plus interest, depreciation and amortization expense, income tax expense, and other non-cash items (including impairments of goodwill or intangible assets). Consolidated EBITDA shall include pro-forma components of EBITDA attributable to any permitted acquisition consummated during the period of calculation.
	Our 2011 Credit Facility contains restrictions, some of which apply only above specific thresholds, regarding indebtedness, liens, investments and acquisitions, contingent obligations, dividend payments, stock repurchases, asset sales, fundamental business changes, transactions with affiliates, and changes in fiscal year.
	Our 2011 Credit Facility identifies various events of default and provides for acceleration of the obligations and exercise of other enforcement remedies upon default. Events of default include our failure to make payments under the credit facility; cross-defaults; a breach of financial, affirmative and negative covenants; a breach of representations and warranties; bankruptcy and other insolvency events; the existence of unsatisfied judgments and attachments; dissolution; other events relating to the Employee Retirement Income Security Act; a change in control and invalidity of loan documents.
	Our 2011 Credit Facility is guaranteed by all of our existing and future domestic subsidiaries that, on an individual basis, represent more than 10% of either our consolidated domestic assets or consolidated domestic revenues. If necessary, additional domestic subsidiaries will be included so that assets and revenues of subsidiary guarantors are equal at all times to at least 80% of our consolidated domestic assets and consolidated domestic revenues of our available domestic subsidiaries.
	We may use any future borrowings from our 2011 Credit Facility along with operating cash flows for general corporate purposes, including funding working capital, making capital expenditures, funding acquisitions, paying dividends and repurchasing our common stock.
	We were in compliance with the covenants of our 2011 Credit Facility as of January 3, 2014.
	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. On January 3, 2014, our exchange offer expired and we exchanged substantially all of the privately placed Senior Notes with Senior Notes that are registered with the SEC. As of January 3, 2014, the outstanding balance of the Senior Notes was $999.1 million, net of $0.9 million of discount.
	Interest on the Senior Notes is payable semi-annually on April 1 and October 1 of each year beginning on October 1, 2012. The net proceeds of the Senior Notes were used to fund the acquisition of Flint. We may redeem the Senior Notes, in whole or in part, at any time and from time to time, at a price equal to 100% of the principal amount, plus a "make-whole" premium and accrued and unpaid interest as described in the indenture. In addition, we may redeem all or a portion of the 5.00% Senior Notes at any time on or after the date that is three months prior to the maturity date of those 5.00% Senior Notes, at a redemption price equal to 100% of the principal amount of the 5.00% Senior Notes to be redeemed. We may also, at our option, redeem the Senior Notes, in whole, at 100% of the principal amount and accrued and unpaid interest upon the occurrence of certain events that result in an obligation to pay additional amounts as a result of certain specified changes in tax law described in the indenture. Additionally, if a change of control triggering event occurs, as defined by the terms of the indenture, we will be required to offer to purchase the Senior Notes at a purchase price equal to 101% of the principal amount, plus accrued and unpaid interest, if any, to the date of the purchase. We are generally not limited under the indenture governing the Senior Notes in our ability to incur additional indebtedness provided we are in compliance with certain restrictive covenants, including restrictions on liens and restrictions on sale and leaseback transactions, and merge or sell substantially all of our property and assets.
	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.
	On May 14, 2012, we guaranteed the Canadian Notes with an outstanding face value of C$175.0 million (US$175.0 million). On December 27, 2013, Flint redeemed all of its outstanding Canadian Notes. We recorded in “Interest expense” on our Consolidated Statements of Operations for the year ended January 3, 2014 a net gain of $4.1 million, comprised of premium write-off of $23.2 million and offset by a prepayment fee of $19.1 million related to the redemption of the Canadian Notes. As of December 28, 2012, the outstanding balance of the Canadian Notes was $203.8 million, including $28.0 million of premium.
	We were in compliance with the covenants of our Senior Notes as of January 3, 2014.
	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.
	We had no outstanding debt balances on our revolving line of credit as of January 3, 2014. We had outstanding debt balances of $100.5 million on our revolving line of credit as of December 28, 2012. As of January 3, 2014, we had issued $108.3 million of letters of credit, leaving $891.7 million available under our revolving credit facility.
	A summary of information regarding our revolving line of credit is set forth below:
			Year Ended
			January 3,			December 28,
		(In millions, except percentages)	2014			2012
		Effective average interest rates on the revolving line of credit		2.40%			1.90%
		Average daily revolving line of credit balances	$	135.2		$	139.5
		Maximum amounts outstanding at any point during the year	$	236.4		$	420
	Other Indebtedness
	Notes payable, five year loan notes, and foreign credit lines. As of January 3, 2014 and December 28, 2012, we had outstanding amounts of $67.1 million and $35.5 million, respectively, in notes payable, five-year loan notes, and foreign lines of credit. The weighted-average interest rates of the notes were approximately 3.57% and 4.68% as of January 3, 2014 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 January 3, 2014 and December 28, 2012, we maintained several credit lines with aggregate borrowing capacity of $51.3 million and $50.8 million, respectively, and had remaining borrowing capacity of $49.0 million and $47.7 million, respectively.
	Capital Leases. As of January 3, 2014 and December 28, 2012, we had obligations under our capital leases of approximately $43.5 million and $59.2 million, respectively, consisting primarily of leases for office equipment, computer equipment and furniture.
	Foreign Currency Translation Gains (Losses) Related to Intercompany Loans. We recorded foreign currency translation losses of $7.7 million and gains of $0.8 million on intercompany loans for the years ended January 3, 2014 and December 28, 2012, respectively. We did not have these intercompany notes in fiscal year 2011. These gains and losses are recorded in “Other income (expenses)” on our Consolidated Statements of Operations.
	Maturities
	As of January 3, 2014, the amounts of our long-term debt outstanding (excluding capital leases) that mature in the next five years and thereafter were as follows:
		(In millions)
		Less than one year			$	24.8
		Second year				12.6
		Third year				63.2
		Fourth year				456.8
		Fifth year				505.4
	Thereafter				605.2
		Total		$	1,668.00
As of January 3, 2014, the amounts of capital leases that mature in the next five years and thereafter were as follows:
	(In millions)			Capital Leases
	Less than one year			$	20.6
	Second year				11.1
	Third year				9.2
	Fourth year				4.1
	Fifth year				0.1
		Total minimum lease payments			45.1
	Less: amounts representing interest				1.6
		Present value of net minimum lease payments		$	43.5

FAIR_VALUES_OF_DEBT_INSTRUMENT

FAIR VALUES OF DEBT INSTRUMENTS AND DERIVATIVE INSTRUMENTS	12 Months Ended
	Jan. 03, 2014
Notes to Financial Statements [Abstract]	'
FAIR VALUES OF DEBT INSTRUMENTS AND DERIVATIVE INSTRUMENTS	'
	NOTE 12. FAIR VALUE OF DEBT INSTRUMENTS AND DERIVATIVE INSTRUMENTS
	2011 Credit Facility
	As of January 3, 2014 and December 28, 2012, the estimated fair market values of the term loan under our 2011 Credit Facility were approximately $603.2 million and $667.3 million, respectively. The carrying value of this term loan on our Consolidated Balance Sheets as of January 3, 2014 and December 28, 2012 was $605.0 million and $670.0 million, respectively, excluding unamortized issuance costs. The fair value of our term loan as of January 3, 2014 was determined to be at par less issuance fees as the agreement was amended on December 19, 2013 (Level 2).
	Senior Notes and Canadian Notes
	As of January 3, 2014, the estimated fair market value of the Senior Notes was approximately $983.0 million and the carrying value of these notes on our Consolidated Balance Sheets was $1.0 billion, excluding unamortized discount. As of 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 Consolidated Balance Sheets was $1.2 billion, excluding unamortized discount and premium. The fair value of the Senior Notes was derived by taking quoted prices of comparable bonds and making an adjustment to reflect our credit to determine the price of the Senior Notes (Level 2) in the trading market and multiplying it by the outstanding balance of the notes.
	Derivative Instruments
	As of January 3, 2014, there were no derivative instruments outstanding. We have used derivative instruments as a risk management tool and not for trading or speculative purposes. The fair value of each derivative instruments is based on mark-to-market model measurements that are interpolated from observable market data, including spot and forward rates, as of the reporting date and for the duration of each derivative's terms.
	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.
	During March and April 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 as of March 30, 2012) 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 acquisition of Flint in Canadian dollars. These contracts settled during the second quarter of 2012.

INCOME_TAXES

INCOME TAXES	12 Months Ended
	Jan. 03, 2014
Notes to Financial Statements [Abstract]	'
INCOME TAXES	'
	As of January 3, 2014, our federal net operating loss (“NOL”) carryovers were approximately $29.1 million. These federal NOL carryovers expire in years 2020 through 2032. In addition to the federal NOL carryovers, there are also state income tax NOL carryovers in various taxing jurisdictions of approximately $257.2 million. These state NOL carryovers expire in years 2014 through 2032. There are also foreign NOL carryovers in various jurisdictions of approximately $535.3 million. The majority of the foreign NOL carryovers have no expiration date. At January 3, 2014, the federal, state and foreign NOL carryovers resulted in a deferred tax asset of $129.9 million with a valuation allowance of $96.7 million established against this deferred tax asset. None of the remaining net deferred tax assets related to NOL carryovers is individually material and management believes that it is more likely than not they will be realized. Full recovery of our NOL carryovers will require that the appropriate legal entity generate taxable income in the future at least equal to the amount of the NOL carryovers within the applicable taxing jurisdiction.
	As of January 3, 2014 and December 28, 2012, we have remaining tax-deductible goodwill of $142.0 million and $223.2 million, respectively, resulting from acquisitions. The amortization of this goodwill is deductible over various periods ranging up to 13 years. The tax deduction for goodwill for 2014 is expected to be approximately $72.5 million and is expected to be substantially lower beginning in 2015.
	As of January 3, 2014, December 28, 2012 and December 30, 2011, we had $14.0 million, $15.4 million and $16.7 million of unrecognized tax benefits, respectively. Included in the balance of unrecognized tax benefits at the end of fiscal year 2013 were $9.8 million of tax benefits, which, if recognized, would affect our effective tax rate. A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:
								Year Ended
								January 3,			December 28,		December 30,
	(In millions)							2014			2012		2011
	Unrecognized tax benefits beginning balance							$	15.4		$	16.7	$	21.5
	Gross increase – tax positions in prior years								1.7			1.2		2.7
	Gross decrease – tax positions in prior years								-0.2			-1.2		-3.6
	Gross increase – current period tax positions								—			1.2		—
	Settlements								-1.4			-0.2		-0.2
	Lapse of statute of limitations								-1.5			-2.4		-3.7
	Unrecognized tax benefits acquired in current year								—			0.1		—
	Unrecognized tax benefits ending balance							$	14		$	15.4	$	16.7
	We recognize accrued interest related to unrecognized tax benefits in interest expense and penalties as a component of tax expense. During the years ended January 3, 2014, December 28, 2012 and December 30, 2011, we recognized $0.5 million, $(1.4) million and $(1.4) million, respectively, in interest and penalties. We have accrued approximately $5.8 million, $5.3 million and $6.7 million in interest and penalties as of January 3, 2014, December 28, 2012 and December 30, 2011, respectively. With a few exceptions, in jurisdictions where our tax liability is immaterial, we are no longer subject to U.S. federal, state, local or foreign examinations by tax authorities for years before 2008.
	It is reasonably possible that unrecognized tax benefits will decrease up to $2.7 million within the next twelve months as a result of the settlement of tax audits. The timing and amounts of these audit settlements are uncertain, but we do not expect any of these settlements to have a significant impact on our financial position or results of operations.
	NOTE 13. INCOME TAXES
	The components of income tax expense were as follows:
								Year Ended
								January 3,			December 28,		December 30,
	(In millions)							2014			2012		2011
	Current:
		Federal						$	76.1		$	152.3	$	78.3
		State and local							9.8			35.9		17.6
		Foreign							8.8			18.3		19.2
			Subtotal						94.7			206.5		115.1
	Deferred:
		Federal							70.8			-10.5		26.2
		State and local							9.7			1		5.6
		Foreign							-7.5			-7.1		-3.5
			Subtotal						73			-16.6		28.3
				Total income tax expense				$	167.7		$	189.9	$	143.4
	The difference between total tax expense and the amount computed by applying the U.S. statutory federal income tax rate to income before taxes was as follows:
					Year Ended
					3-Jan-14				28-Dec-12				30-Dec-11
	(In millions, except for percentages)				Amount		Tax Rate		Amount			Tax Rate	Amount		Tax Rate
	U.S. statutory rate applied to income (loss) before taxes				$	174	35.00%		$	215.5		35.00%	$	80.1	35.00%
	State taxes, net of federal benefit					13.7	2.80%			26.3		4.30%		17.7	7.70%
	Adjustments to valuation allowances					4.4	0.90%			4		0.60%		19.6	8.50%
	Foreign income taxed at rates other than 35%					-10.2	-2.10%			-24.4		-4.10%		-27.2	-11.90%
	Goodwill impairment					—	—			—		—		86.3	37.70%
	Exclusion of tax on noncontrolling interests					-19.8	-4.00%			-29.9		-4.90%		-30.1	-13.20%
	Other adjustments					5.6	1.10%			-1.6		-0.10%		-3	-1.20%
			Total income tax expense		$	167.7	33.70%		$	189.9		30.80%	$	143.4	62.60%
	The significant components of our deferred tax assets and liabilities were as follows:
								Year Ended
								January 3,			December 28,		December 30,
	(In millions)							2014			2012		2011
	Deferred tax assets:
		Accrued employee benefits						$	230.7		$	237.6	$	200
		Net operating losses							129.9			132.2		108.4
		Accrued liabilities							59.7			71.9		60.6
		Insurance reserves							15.9			38.2		40.3
		Tax credits							13			15.1		10.5
		Other							20.6			23.1		19.6
			Total deferred tax assets						469.8			518.1		439.4
		Valuation allowance on deferred tax assets							-145			-137.6		-124
			Net deferred tax assets					$	324.8		$	380.5	$	315.4
	Deferred tax liabilities:
		Depreciation and amortization						$	-456.4		$	-466.1	$	-360.8
		Contract revenue and costs							-126.9			-79.9		-74.2
		Subsidiary basis difference							-150.1			-146.8		-145.5
			Total deferred tax liabilities						-733.4			-692.8		-580.5
			Deferred tax liabilities, net of deferred tax assets				$	-408.6		$	-312.3	$	-265.1
We have indefinitely reinvested $431.9 million of undistributed earnings of our foreign operations outside of our U.S. tax jurisdiction as of January 3, 2014. No deferred tax liability has been recognized for the remittance of such earnings to the U.S. since it is our intention to utilize these earnings in our foreign operations. The determination of the amount of deferred taxes on these earnings is not practicable since the computation would depend on a number of factors that cannot be known unless a decision is made to repatriate the earnings. Some of our foreign earnings are indefinitely reinvested between other foreign countries. No cash distributions were made from our foreign subsidiaries in fiscal year 2011, 2012 or 2013
As of January 3, 2014, our federal net operating loss (“NOL”) carryovers were approximately $29.1 million. These federal NOL carryovers expire in years 2020 through 2032. In addition to the federal NOL carryovers, there are also state income tax NOL carryovers in various taxing jurisdictions of approximately $257.2 million. These state NOL carryovers expire in years 2014 through 2032. There are also foreign NOL carryovers in various jurisdictions of approximately $535.3 million. The majority of the foreign NOL carryovers have no expiration date. At January 3, 2014, the federal, state and foreign NOL carryovers resulted in a deferred tax asset of $129.9 million with a valuation allowance of $96.7 million established against this deferred tax asset. None of the remaining net deferred tax assets related to NOL carryovers is individually material and management believes that it is more likely than not they will be realized. Full recovery of our NOL carryovers will require that the appropriate legal entity generate taxable income in the future at least equal to the amount of the NOL carryovers within the applicable taxing jurisdiction.
As of January 3, 2014 and December 28, 2012, we have remaining tax-deductible goodwill of $142.0 million and $223.2 million, respectively, resulting from acquisitions. The amortization of this goodwill is deductible over various periods ranging up to 13 years. The tax deduction for goodwill for 2014 is expected to be approximately $72.5 million and is expected to be substantially lower beginning in 2015.
As of January 3, 2014, December 28, 2012 and December 30, 2011, we had $14.0 million, $15.4 million and $16.7 million of unrecognized tax benefits, respectively. Included in the balance of unrecognized tax benefits at the end of fiscal year 2013 were $9.8 million of tax benefits, which, if recognized, would affect our effective tax rate. A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:
							Year Ended
							January 3,			December 28,		December 30,
(In millions)							2014			2012		2011
Unrecognized tax benefits beginning balance							$	15.4		$	16.7	$	21.5
Gross increase – tax positions in prior years								1.7			1.2		2.7
Gross decrease – tax positions in prior years								-0.2			-1.2		-3.6
Gross increase – current period tax positions								—			1.2		—
Settlements								-1.4			-0.2		-0.2
Lapse of statute of limitations								-1.5			-2.4		-3.7
Unrecognized tax benefits acquired in current year								—			0.1		—
Unrecognized tax benefits ending balance							$	14		$	15.4	$	16.7
We recognize accrued interest related to unrecognized tax benefits in interest expense and penalties as a component of tax expense. During the years ended January 3, 2014, December 28, 2012 and December 30, 2011, we recognized $0.5 million, $(1.4) million and $(1.4) million, respectively, in interest and penalties. We have accrued approximately $5.8 million, $5.3 million and $6.7 million in interest and penalties as of January 3, 2014, December 28, 2012 and December 30, 2011, respectively. With a few exceptions, in jurisdictions where our tax liability is immaterial, we are no longer subject to U.S. federal, state, local or foreign examinations by tax authorities for years before 2008.
It is reasonably possible that unrecognized tax benefits will decrease up to $2.7 million within the next twelve months as a result of the settlement of tax audits. The timing and amounts of these audit settlements are uncertain, but we do not expect any of these settlements to have a significant impact on our financial position or results of operations.
The income before income taxes, by geographic area, was as follows:
							Year Ended
							January 3,			December 28,		December 30,
(In millions)							2014			2012		2011
Income before income taxes and noncontrolling interests:
	United States						$	445.2		$	534.9	$	158.3
	International							51.8			80.8		70.7
		Total income before income taxes and noncontrolling interests					$	497		$	615.7	$	229

EMPLOYEE_RETIREMENT_AND_POSTRE

EMPLOYEE RETIREMENT AND POST-RETIREMENT BENEFIT PLANS	12 Months Ended
	Jan. 03, 2014
Notes to Financial Statements [Abstract]	'
EMPLOYEE RETIREMENT AND POST-RETIREMENT BENEFIT PLANS	'
	NOTE 14. EMPLOYEE RETIREMENT AND POST-RETIREMENT BENEFIT PLANS
	Defined Contribution Plans
	We made contributions of $90.4 million, $91.0 million and $48.1 million to our defined contribution plans during the years ended January 3, 2014, December 28, 2012, and December 30, 2011, respectively. Full- and part-time employees, and employees covered by collective bargaining agreements are generally able to participate in one of our defined contribution plans. Cash contributions to these defined contribution plans are based on either a percentage of employee contributions or on a specified amount per hour depending on the provisions of each plan.
	In addition to the above, some of our foreign subsidiaries have contributory trustee retirement plans covering substantially all of their employees. We made contributions to our foreign plans in the amounts of approximately $45.6 million, $35.9 million, and $20.2 million for the years ended January 3, 2014, December 28, 2012, and December 30, 2011, respectively.
	Deferred Compensation Plans
	We maintain various deferred compensation plans, including a restoration plan for some executives of the Energy & Construction Division. The URS E&C Holdings, Inc. Voluntary Deferred Compensation Plan allows for deferral of salary and incentive compensation. The URS E&C Holdings, Inc. Restoration Plan provides matching contributions on compensation not eligible for matching contributions under the URS Corporation, Inc. 401(k) Plan. As of January 3, 2014 and December 28, 2012, the accrued benefit amounts for our deferred compensation plans were $22.6 million and $23.2 million, respectively, and are included in “Other long-term liabilities” on our Consolidated Balance Sheets.
	Defined Benefit Plans
	We sponsor a number of pension and unfunded supplemental executive retirement plans, including the following significant plans.
	We provide a defined benefit plan, the URS Federal Technical Services, Inc. Employees' Retirement Plan, to cover some of the Federal Services Division's hourly and salaried employees as well as our employees of a joint venture in which this business group participates. This pension plan provides retirement benefit payments for the life of participating retired employees. It was closed to new participants on June 30, 2003, but active participants continue to accrue benefits. All participants are fully vested in their benefits.
	We also provide various defined benefit pension plans and unfunded supplemental retirement plans, including the URS Government Services Group Pension Plan, the Washington Government Services Group Executive Pension Plan, and the URS Professional Solutions LLC Pension Plan, which primarily cover groups of current and former employees of the Federal Services Division. These plans were closed to future accruals after December 31, 2005.
	In addition, as part of our acquisition of Scott Wilson Group plc (“Scott Wilson”), there are two foreign defined benefit retirement plans, the Scott Wilson Pension Scheme (“SWPS”) and the Scott Wilson Railways Shared Cost Section of the Railways Pension Scheme (“RPS”). The SWPS is closed to new participants and was closed to future accruals on October 1, 2010. The RPS is closed to new participants other than those who have an indefeasible right to join under U.K. law.
	Consistent with foreign laws, we may also contribute funds into foreign government-managed accounts or insurance companies for our foreign employees.
	Valuation
	We measure our pension costs according to actuarial valuations and the projected unit credit method is used to determine pension costs for financial accounting purposes.
	The discount rates for our defined benefit plans were derived using an actuarial “bond model.” The models for domestic and foreign plans assume that we purchase bonds with a credit rating of AA or better by a single bond rating agency, at prices based on a current bond yield and bond quality. The model develops the yield on this portfolio of bonds as of the measurement date. The cash flows from the bonds selected for the portfolio generally match our expected benefit payments in future years.
	For our domestic plans, the Citigroup High Grade Credit Index (AAA/AA 10+ Year) or Citigroup Pension Discount Curve was used to determine the yield differential for cash flow streams from appropriate quality bonds as of the measurement date. For our foreign plans, the iBoxx GBP Corporate Bond Index (AA 15+ Year) was used to determine the yield differential for cash flow streams from appropriate quality bonds as of the measurement date.
	The weighted average of the bond yields is determined based upon the estimated retirement payments in order to derive the discount rate used in calculating the present value of the pension plan obligations.
	Our estimates of benefit obligations and assumptions used to measure those obligations for the defined benefit plans as of January 3, 2014 and December 28, 2012, were as follows:
																	##SL
							Domestic Plans						Foreign Plans
							January 3,			December 28,			January 3,			December 28,
	(In millions, except percentages)						2014			2012			2014			2012
	Change in benefit obligation:
		Benefit obligation at beginning of year					$	443.4		$	383.3		$	485.9		$	447.9
		Service cost						7.5			7.5			0.5			0.6
		Interest cost						17.6			18.9			22.2			22.6
		Employee contributions						—			—			0.4			0.4
		Plan amendment						2.7			—			—			—
		Benefits paid and expenses						-21.6			-16.6			-15.4			-14.9
		Exchange rate changes						—			—			13.2			20.8
		Actuarial (gain) loss						-34.4			50.3			49.8			8.5
					Benefit obligation at end of year		$	415.2		$	443.4		$	556.6		$	485.9
	Change in plan assets:
		Fair value of plan assets at beginning of year					$	274.2		$	236.4		$	370.8		$	334.3
		Actual gain (loss) on plan assets						28.3			31.4			22.2			25.6
		Employer contributions						16			18.4			9.1			9.7
		Employer direct benefit payments						5.1			4.6			—			—
		Employee contributions						—			—			0.4			0.4
		Exchange rate changes						—			—			8.6			15.7
		Benefits paid and expenses						-21.6			-16.6			-15.4			-14.9
					Fair value of plan assets at end of year		$	302		$	274.2		$	395.7		$	370.8
	Underfunded status reconciliation:
		Underfunded status					$	113.2		$	169.2		$	160.9		$	115.1
					Net amount recognized		$	113.2		$	169.2		$	160.9		$	115.1
	Amounts recognized in our Consolidated Balance Sheets consist of:
		Accrued benefit liability included in current liabilities					$	20.9		$	5.1		$	—		$	—
		Accrued benefit liability included in other long-term liabilities						92.3			164.1			160.9			115.1
					Net amount recognized		$	113.2		$	169.2		$	160.9		$	115.1
	Amounts recognized in accumulated other comprehensive income consist of:
		Prior service income					$	0.2		$	0.6		$	—		$	—
		Net gain (loss)						-80.8			-140.5			-96.1			-41.6
					Net amount recognized		$	-80.6		$	-139.9		$	-96.1		$	-41.6
	Additional information:
		Accumulated benefit obligation					$	409.7		$	437.6		$	545.1		$	470.7
	Weighted-average assumptions used to determine benefit obligations at year end:
		Discount rate						4.97%			4.02%			4.70%			4.80%
		Rate of compensation increase						4.50%			4.50%			3.30%			2.80%
							Domestic Plans						Foreign Plans
							January 3,			December 28,			January 3,			December 28,
	(In millions, except percentages)						2014			2012			2014			2012
	Amounts recognized in accumulated other comprehensive income consist of:
		Prior service income					$	0.2		$	0.6		$	—		$	—
		Net gain (loss)						-80.8			-140.5			-96.1			-41.6
				Net amount recognized		$	-80.6		$	-139.9		$	-96.1		$	-41.6
Additional information:
	Accumulated benefit obligation					$	409.7		$	437.6		$	545.1		$	470.7
Weighted-average assumptions used to determine benefit obligations at year end:
	Discount rate						4.97%			4.02%			4.70%			4.80%
	Rate of compensation increase						4.50%			4.50%			3.30%			2.80%
Net periodic pension costs and other comprehensive income included the following components for the years ended January 3, 2014, December 28, 2012, and December 30, 2011:
							Years Ended
							Domestic Plans									Foreign Plans
							January 3,			December 28,			December 30,			January 3,		December 28,		December 30,
(In millions, except percentages)							2014			2012			2011			2014		2012		2011
Net periodic pension costs:
	Service cost						$	7.5		$	7.5		$	6.8		$	0.5	$	0.6	$	0.6
	Interest cost							17.6			18.9			19			22.2		22.6		24.4
	Expected return on plan assets							-19.2			-17.7			-16.4			-23.2		-22.2		-22.9
	Amortization or curtailment recognition of prior service cost							2.3			-3			-3.2			—		—		—
	Recognized actuarial loss							16.2			9.8			7.4			—		—		—
					Total net periodic pension costs		$	24.4		$	15.5		$	13.6		$	-0.5	$	1	$	2.1
Other changes in plan assets and benefit obligations recognized in other comprehensive income:
	Prior service cost						$	2.7		$	—		$	-1.1		$	—	$	—	$	—
	Net loss (gain)							-43.5			36.7			27.3			50.9		5.1		48.6
	Effect of exchange rate changes on amounts included in accumulated other comprehensive income							—			—			—			3.6		1.7		-1.9
	Amortization or curtailment recognition of prior service cost							-2.3			3			3.2			—		—		—
	Amortization or settlement recognition of net loss							-16.2			-9.8			-7.4			—		—		—
					Total recognized in other comprehensive loss (income)		$	-59.3		$	29.9		$	22		$	54.5	$	6.8	$	46.7
Total recognized in net periodic pension costs and other comprehensive loss (income)							$	-34.9		$	45.4		$	35.6		$	54	$	7.8	$	48.8
Weighted-average assumptions used to determine net periodic cost for years ended:
	Discount rate							4.02%			5.05%			5.55%			4.80%		5.00%		5.70%
	Rate of compensation increase							4.50%			4.50%			4.50%			2.80%		3.00%		3.45%
	Expected long-term rate of return on plan assets							7.35%			7.34%			7.44%			7.00%		7.00%		6.96%
	Measurement dates							12/28/12			12/30/11			12/31/10			12/28/12		12/30/11		12/31/10
Investment policies & strategies
Our investment policies and strategies are to seek a competitive rate of return relative to an appropriate level of risk depending on the funded status and obligations of each plan. The plans' investment managers employ both active and passive investment management strategies with the goal of matching or outperforming the broad markets in which they invest. Our risk management practices include diversification across asset classes and investment styles and periodic rebalancing toward asset allocation targets. The target asset allocation selected for each domestic plan reflects a risk/return profile that we believe is appropriate relative to each plan's liability structure and return goals. We conduct periodic asset-liability studies for domestic plan assets in order to model various potential asset allocations in comparison to each plan's forecasted liabilities and liquidity needs. For the foreign plans, asset allocation decisions are generally made by an independent board of trustees, or similar governing body.
For our domestic and foreign plans, investment objectives are aligned to generate returns that will enable the plans to meet their future obligations.
The assumptions we use in determining the expected long-term rate of return on plan assets are based on an actuarial analysis. This analysis includes a review of anticipated future long-term performance of individual asset classes and consideration of the appropriate asset allocation strategy, given the anticipated requirements of the plan, to determine the average rate of earnings expected on the funds invested to provide for the pension plan benefits. While the study gives appropriate consideration to recent fund performance and historical returns, the assumption is primarily a long-term, prospective rate.
Our weighted-average target asset allocation for the defined benefit plans is as follows:
							Current Target Asset Allocation
							Domestic Plans			Foreign Plans
	Equity securities							45%			30%
	Debt securities							55%			36%
	Real estate							—			6%
	Hedge fund							—			25%
	Other							—			3%
					Total			100%			100%
During 2014, we expect to make cash contributions, including estimated employer-directed benefit payments, of between $45 million and $50 million, to the domestic and foreign defined benefit plans.
As of January 3, 2014, the estimated portions of the net loss and the prior service cost in accumulated other comprehensive income that will be recognized as components of net periodic benefit cost over the next fiscal year are $8.9 million and $0.2 million, respectively. In addition, the estimated future benefit payments to be paid out in the next ten years under our defined benefit plans are as follows:
	For the Fiscal Year:						Estimated Future Benefit Payments
	(In millions)						Domestic Plans			Foreign Plans
	2014						$	38		$	17
	2015							23			17
	2016							23			18
	2017							24			18
	2018							25			19
	Next five fiscal years thereafter							130			103
					Total		$	263		$	192
Fair Values of Defined Benefit Plans Assets
As of January 3, 2014 and December 28, 2012, the fair values of our defined benefit plan assets by the major asset categories are as follows:
			Total			Fair Value Measurement as of January 3, 2014
			Carrying									Significant
			Value as of			Quoted Prices in			Significant Other			Unobservable
			January 3,			Active Markets			Observable Inputs			Inputs
(In millions)			2014			(Level 1)			(Level 2)			(Level 3)
Cash and cash equivalents			$	15.7		$	5.1		$	10.6		$	—
U.S. equity funds				78.1			—			78.1			—
International equity funds				95.6			—			95.6			—
Global equity funds				82.4			—			82.4			—
Fixed income securities				304.4			—			294.5			9.9
International property funds				121.5			—			42.7			78.8
	Total		$	697.7		$	5.1		$	603.9		$	88.7
			Total			Fair Value Measurement as of December 28, 2012
			Carrying									Significant
			Value as of			Quoted Prices in			Significant Other			Unobservable
			December 28,			Active Markets			Observable Inputs			Inputs
(In millions)			2012			(Level 1)			(Level 2)			(Level 3)
Cash and cash equivalents			$	21		$	8		$	13		$	—
U.S. equity funds				74.4			—			74.4			—
International equity funds				94.6			—			94.6			—
Global equity funds				72.2			—			72.2			—
Fixed income securities				264.9			—			264.9			—
International property funds				117.9			—			43.8			74.1
	Total		$	645		$	8		$	562.9		$	74.1
The following table presents a reconciliation of the beginning and ending balances of the fair value measurements using significant unobservable inputs (Level 3):
	(In millions)			Level 3 Fair Value Measurement Rollforward
	Balance as of December 30, 2011			$	47.9
		Unrealized gains (losses)			4.4
		Purchases, sales, issuances and settlements, net			21.8
	Balance as of December 28, 2012			$	74.1
		Realized gains (losses)			0.1
		Unrealized gains (losses)			6.3
		Purchases, sales, issuances and settlements, net			8.2
	Balance as of January 3, 2014			$	88.7
Level 1: The fair values of the plan assets in this category are the plans' interest in cash and cash equivalents.
Level 2: The fair values of the plans' interest in common collective trust funds are based on quoted prices in inactive markets, inputs other than quoted prices that are observable for the asset, net asset values as reported by the issuer and/or inputs that are derived principally from or corroborated by observable market data by correlation or other means. If the asset has a specified (contractual) term, the level 2 input must be observable for substantially the full term of the asset.
Level 3: The fair values of the plan assets in this category are initially based on net asset values as reported by the issuer. Restrictions on the redemption of the investments and delays in settlement are taken into consideration. The values cannot be readily derived from or corroborated by observable market data and generally require additional time to liquate in an orderly manner.
Post-retirement Benefit Plans
We sponsor a number of retiree health and life insurance benefit plans (post-retirement benefit plans) for our Energy & Construction and Federal Services Divisions. The post-retirement benefits provided under company sponsored health care and life insurance plans of the Energy & Construction Division were frozen prior to the Washington Group International, Inc. (“WGI”) acquisition. The Federal Services plan was closed to new participants in 2003.
Accumulated post-retirement benefit obligations for the post-retirement benefit plans as of January 3, 2014 and December 28, 2012 were $38.9 million and $43.6 million, respectively. The discount rates used to compute the benefit obligations at January 3, 2014 and December 28, 2012 were 4.61% and 3.48%, respectively. As of January 3, 2014 and December 28, 2012, the fair values of the plan assets were $3.5 million and $3.1 million, respectively.
Net periodic post-retirement benefit costs for the post-retirement benefit plans for the years ended January 3, 2014, December 28, 2012, and December 30, 2011 were $1.8 million, $2.5 million and $1.8 million, respectively. The measurement date used for the post-retirement benefit plans was the beginning of each fiscal year. The weighted-average discount rates used to determine net periodic costs were 3.48%, 4.69%, and 5.23%, respectively, and the expected long-term rates of return on plan assets were 7.50%, 7.50%, and 7.50%, respectively, for the years ended January 3, 2014, December 28, 2012, and December 30, 2011.
The assumptions used related to health care cost trend rates for the years ended January 3, 2014 and December 28, 2012 were as follows:
						January 3,			December 28,
						2014			2012
Assumed blended health care cost trend rates at year-end:
	Health care cost trend rate assumed for next year						7.92%			7.94%
	Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)						4.94%			4.94%
	Years that the rates reach the ultimate trend rate						2020/2024			2020/2024
We currently expect to make cash contributions, including estimated employer direct benefit payments, of between $3 million and $4 million to the post-retirement benefit plans for 2014.
Multiemployer Pension Plans
We participate in approximately 200 construction-industry multiemployer pension plans. Generally, the plans provide defined benefits to substantially all employees covered by collective bargaining agreements. Under the Employee Retirement Income Security Act, a contributor to a multiemployer plan is liable, upon termination or withdrawal from a plan, for its proportionate share of a plan's unfunded vested liability.
Our aggregate contributions to these plans were $49.7 million, $48.2 million, and $40.7 million for the years ended January 3, 2014, December 28, 2012, and December 30, 2011, respectively. At January 3, 2014, none of the plans in which we participate are individually significant to our consolidated financial statements.

STOCKHOLDERS_EQUITY

STOCKHOLDERS' EQUITY	12 Months Ended
	Jan. 03, 2014
Notes to Financial Statements [Abstract]	'
STOCKHOLDERS' EQUITY	'
	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		$	16		10-Jan-14
	28-Feb-14		$	0.22		21-Mar-14			$	NA		11-Apr-14
	NOTE 15. 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		$	16		10-Jan-14
	28-Feb-14		$	0.22		21-Mar-14			$	NA		11-Apr-14
	NA =ot available
	Equity Incentive Plans
	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 Plan”). Among other provisions, the amendment and restatement increased the aggregate number of shares of common stock authorized for issuance under the 2008 Plan by 1.5 million shares to a total of 6.5 million shares and extended the term of the 2008 Plan until May 23, 2018. As of January 3, 2014, approximately 3.0 million shares had been issued as restricted stock awards and 1.7 million shares of restricted stock units were issuable upon the vesting under our 2008 Plan. In addition, approximately 1.8 million shares remained reserved for future grant under the 2008 Plan.
	Employee Stock Purchase Plan
	Our Employee Stock Purchase Plan (“ESPP”) allows qualifying employees to purchase shares of our common stock through payroll deductions of up to 10% of their compensation, subject to Internal Revenue Code limitations, at a price of 95% of the fair market value as of the end of each of the six-month offering periods. The offering periods commence on January 1 and July 1 of each year.
	For the years ended January 3, 2014, December 28, 2012, and December 30, 2011, employees participating in our ESPP purchased approximately 0.4 million shares, 0.1 million shares, and 0.2 million shares, respectively. Cash proceeds generated from employee stock option exercises and purchases by employees under our ESPP for the years ended January 3, 2014, December 28, 2012, and December 30, 2011 were $20.2 million, $8.9 million, and $11.7 million, respectively.
	Restricted Stock Awards and Units
	We have issued restricted stock awards and units from the 2008 Plan that may contain time-based or time- and performance-based vesting over multiple years. Some awards are subject to the following time- and performance-based vesting conditions:
	Single-Performance Criteria
	Upon the achievement of an annual net income target generally established in the first quarter of the fiscal year preceding the vesting date.
	Multi-Performance Criteria
	In March 2013, pursuant to our long-term equity incentive program, we issued performance-based restricted stock unit awards to senior executives that vest at the end of a three-year vesting period with multi-performance criteria. One criterion is the extent to which we achieve a net income performance condition measured on a cumulative basis over a two-year performance period. In addition, there is a market condition based on meeting or exceeding the total stockholder return of the Russell 3000 Index, measured over a three-year performance period. At vesting, these performance-based awards may convert to common stock up to 200% of the targeted amounts, based on achievement of performance targets.
	In November 2013, we redesigned our long-term equity incentive program and issued performance-based restricted stock unit awards to senior executives that vest at the end of a three-year vesting period with three performance criteria. Two criteria consist of a net income performance condition measured on a cumulative basis over a three-year performance period and a return on invested capital performance condition measured on an annual basis averaged over a three-year performance period. In addition, there is a market condition based on meeting or exceeding the total stockholder return of the Russell 3000 Index, measured over a three-year performance period. At vesting, these performance-based awards may convert to common stock up to 200% of the targeted amounts, based on achievement of performance targets.
	Our restricted stock awards and units are measured based on the stock price on the date that all of the key terms and conditions related to the award are known. Restricted stock awards and units are expensed on a straight-line basis over their respective vesting periods subject to the probability of meeting performance requirements and adjusted for the number of shares expected to be issued.
	The grant date fair value for restricted stock awards and units with multi-performance criteria was determined using a Monte Carlo simulation model with the following weighted-average assumptions:
				Fiscal year ended
				3-Jan-14
		Stock price (1)		$	47
		Expected volatility factor (2)			31.30%
		Risk-free interest rate (3)			0.33%
		Expected annual dividend yield (4)			0%
	The stock price is the closing price of our common stock on the date of when all of the key terms and conditions related to the award are known.
	The stock volatility for each grant was determined based on the historical volatility for the Russell 3000 Index and in correlation to our common stock for a period equal to the estimated performance period.
	The risk-free interest rate for periods equal to the performance period is based on the U.S. Treasury yield curve in effect at the date of grant.
	Dividends are reinvested for purposes of calculating total stockholder return. For purposes of the fair value model, the dividend yield is therefore considered to be 0%.
	As of January 3, 2014, we had estimated unrecognized stock-based compensation expense of $46.2 million related to nonvested restricted stock awards and units for which vesting is probable. This expense is expected to be recognized over a weighted-average period of 2.4 years. The following table summarizes the total fair value of vested shares, according to their contractual terms, and the grant date fair value of restricted stock awards and units granted during the years ended January 3, 2014 and December 28, 2012:
				January 3,			December 28,
		(In millions)		2014			2012
		Fair value of shares vested		$	43.9		$	42
		Grant date fair value of restricted stock awards and units granted		$	69.2		$	54.3
	A summary of the status of and changes in our nonvested restricted stock awards and units, according to their contractual terms, as of and for the year ended January 3, 2014, is presented below:
					Year Ended
					3-Jan-14
								Weighted-
					Shares			Average Grant
					(in millions)			Date Fair Value
		Nonvested at December 31, 2010			2.5			$	42.92
			Granted		1			$	42.39
		Vested		-1			$	42.47
		Forfeited		-0.1			$	43.46
	Nonvested at December 31, 2011			2.4			$	42.86
		Granted		1.4			$	36.79
		Vested		-1			$	41.69
		Forfeited		-0.1			$	42.44
	Nonvested at December 28, 2012			2.7			$	40.03
		Granted		1.4			$	48.66
		Vested		-1			$	41.45
		Forfeited		-0.3			$	41.9
	Nonvested at January 3, 2014			2.8			$	43.66
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 Consolidated Statements of Operations.
The following table presents our stock-based compensation expense related to restricted stock awards and units, our employee stock purchase plan and the related income tax benefits recognized for the years ended January 3, 2014, December 28, 2012, and December 30, 2011:
							Year Ended
							January 3,			December 28,		December 30,
	(In millions)						2014			2012		2011
	Stock-based compensation expense:
			Restricted stock awards and units				$	31.2		$	43.1	$	44.8
			Employee stock purchase plan					0.6			0.5		0.5
					Stock-based compensation expense		$	31.8		$	43.6	$	45.3
	Stock-based compensation expense included in:
			Cost of revenues				$	23.5		$	33.2	$	35.1
			General and administrative expenses					8.3			10.4		10.2
					Stock-based compensation expense		$	31.8		$	43.6	$	45.3
	Total income tax benefits recognized in our net income related to stock-based compensation expense						$	11.6		$	16	$	17.3
Stock Repurchase Program
For fiscal years 2012 and 2013, the number of shares authorized under the repurchase program were 3.0 million shares, plus the number of shares equal to the difference between the number of shares authorized to be repurchased in the prior year and the actual number of shares repurchased during the prior year, not to exceed 6.0 million shares in aggregate. In February 2014, our Board of Directors approved a modification of our stock repurchase program to allow for the repurchase of up to 12.0 million shares of our common stock in fiscal year 2014. The Board of Directors may modify, suspend, extend or terminate the program at any time.
The following table summarizes our stock repurchase activities for the years ended January 3, 2014, December 28, 2012, and December 30, 2011:
			Year Ended
			January 3,			December 28,			December 30,
	(In millions, except average price paid per share)		2014			2012			2011
	Shares of common stock repurchased			2			1			6
	Average price paid per share		$	45.55		$	40		$	40.47
	Cost of common stock repurchased		$	93.3		$	40		$	242.8

SEGMENT_AND_RELATED_INFORMATIO

SEGMENT AND RELATED INFORMATION	12 Months Ended
	Jan. 03, 2014
Notes to Financial Statements [Abstract]	'
SEGMENT AND RELATED INFORMATION	'
					Year Ended
					January 3,			December 28,			December 30,
		(In millions, except percentages)			2014			2012			2011
		The U.S. Army (1)
				Infrastructure & Environment	$	125.2		$	128.4		$	141.7
				Federal Services		1,100.30			1,497.80			1,352.40
				Energy & Construction		149.5			128.8			198.2
		Total U.S. Army			$	1,375.00		$	1,755.00		$	1,692.30
		Revenues from the U.S. Army as a percentage of our consolidated revenues				13%			16%			18%
		DOE
				Infrastructure & Environment	$	4.7		$	5.6		$	5.9
				Federal Services		821.9			984			1,260.50
				Energy & Construction		4.6			0.1			2.6
		Total DOE			$	831.2		$	989.7		$	1,269.00
		Revenues from DOE as a percentage of our consolidated revenues				8%			9%			13%
		Revenues from the federal market sector as a percentage of our consolidated revenues				34%			40%			49%
	NOTE 16. SEGMENT AND RELATED INFORMATION
	We operate our business through the following four segments:
	Our 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.
	Our Federal Services Division provides services to a wide variety of U.S. federal government agencies, as well as to national governments in other countries. This includes program management, planning, design and engineering, systems engineering and technical assistance, construction and construction management, operations and maintenance, management and operations, IT, and decommissioning and closure services.
	Our Energy & Construction Division provides program management, planning, design, engineering, construction and construction management, operations and maintenance, and decommissioning and closure services to private sector clients as well as federal, state and local government agencies.
	Our Oil & Gas Division provides services to oil and gas industry clients throughout the U.S. and Canada. This includes oilfield services, such as rig transportation and fluid hauling, oil and gas production services, including mechanical, electrical and instrumentation services; pipeline and facility construction, module fabrication; and maintenance services.
	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. The information disclosed in our consolidated financial statements is based on the four segments that comprise our current organizational structure.
	Effective with the beginning of our fiscal year 2014, we realigned our Global Management and Operations Services Group, which was previously a component of our Energy & Construction Division, under the operations and management of our Federal Services Division. The realignment of this group consolidates the majority of our business with U.S. federal government agencies and national governments outside the U.S in our Federal Services Division. We also realigned a portion of our facility construction, process engineering, and operations and maintenance services to the oil and gas industry among our Oil & Gas, Infrastructure & Environment, and Energy & Construction Divisions. These changes, which restructured elements of our oil and gas business from an organization based on legacy acquisitions to one based on service, are designed to improve our ability to provide integrated services to our oil and gas clients. To reflect these realignments, we have revised the prior year amounts to conform to our current year presentation.
	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.
					Year Ended
					January 3,			December 28,			December 30,
	(In millions)				2014			2012			2011
	Revenues
	Infrastructure & Environment				$	3,634.10		$	3,714.40		$	3,761.00
	Federal Services (1)					3,157.20			3,774.90			4,013.90
	Energy & Construction (2)					2,417.80			2,412.90			1,932.50
	Oil & Gas (2)					1,941.80			1,233.10			—
	Inter-segment, eliminations and other					-160.2			-162.8			-162.4
			Total revenues		$	10,990.70		$	10,972.50		$	9,545.00
	Equity in income (loss) of unconsolidated joint ventures
	Infrastructure & Environment				$	2.4		$	4		$	3.9
	Federal Services (1)					84.9			83.4			114.7
	Energy & Construction (2)					8.1			16			13.6
	Oil & Gas (2)					-1.8			4.2			—
			Total equity in income of unconsolidated joint ventures		$	93.6		$	107.6		$	132.2
	URS operating income (loss) (3)
	Infrastructure & Environment				$	209		$	213.4		$	222
	Federal Services (1)					307.8			300.9			276.8
	Energy & Construction (2)					52.4			96.7			54.6
	Oil & Gas (2)					17			59.4			—
	Corporate (4)					-77.5			-99.7			-79.5
			Total URS operating income		$	508.7		$	570.7		$	473.9
	Operating income (loss) (5)
	Infrastructure & Environment				$	210.7		$	215.5		$	222
	Federal Services (1,5)					370.3			378.9			25.5
	Energy & Construction (2)					71.3			132.8			83.1
	Oil & Gas (2)					16			58.4			—
	Corporate (4)					-77.5			-99.7			-79.5
			Total operating income		$	590.8		$	685.9		$	251.1
	Capital expenditures
	Infrastructure & Environment				$	36.9		$	42.5		$	51.2
	Federal Services (1)					13			5.9			5.8
	Energy & Construction (2)					16.8			18.4			13.8
	Oil & Gas (2)					57.1			73.2			—
	Corporate					12.6			13.2			10.9
			Total capital expenditures		$	136.4		$	153.2		$	81.7
	Depreciation and amortization
Infrastructure & Environment				$	50		$	56		$	55
Federal Services (1)					47.8			45.3			36.3
Energy & Construction (2)					40.7			49.2			45.1
Oil & Gas (2)					116.9			76.5			—
Corporate					8.8			6.6			6.3
		Total depreciation and amortization		$	264.2		$	233.6		$	142.7
The operating results of Apptis have been included in our consolidated results since the acquisition on June 1, 2011.
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.
Corporate includes expenses related to corporate functions and acquisition-related expenses.
The operating income for the year ended December 30, 2011 included a $351.3 million goodwill impairment charge. See Note 9, “Goodwill and Intangible Assets,” for more information.
Reconciliations of segment contribution to segment operating income (loss) for the years ended January 3, 2014, December 28, 2012, and December 30, 2011 are as follows:
				Year Ended January 3, 2014
				Infrastructure						Energy			Oil
				&			Federal			&			&
(In millions)				Environment			Services			Construction			Gas		Corporate		Consolidated
URS operating income				$	209		$	307.8		$	52.4		$	17	$	-77.5	$	508.7
Noncontrolling interests					1.7			62.5			18.9			-1		—		82.1
			Operating income (loss)	$	210.7		$	370.3		$	71.3		$	16	$	-77.5	$	590.8
				Year Ended December 28, 2012
				Infrastructure						Energy			Oil
				&			Federal			&			&
(In millions)				Environment			Services			Construction			Gas		Corporate		Consolidated
URS operating income				$	213.4		$	300.9		$	96.7		$	59.4	$	-99.7	$	570.7
Noncontrolling interests					2.1			78			36.1			-1		—		115.2
			Operating income (loss)	$	215.5		$	378.9		$	132.8		$	58.4	$	-99.7	$	685.9
				Year Ended December 30, 2011
				Infrastructure						Energy			Oil
				&			Federal			&			&
(In millions)				Environment			Services			Construction			Gas		Corporate		Consolidated
URS operating income				$	222		$	276.8		$	54.6		$	—	$	-79.5	$	473.9
Noncontrolling interests					—			100			28.5			—		—		128.5
Goodwill impairment					—			-351.3			—			—		—		-351.3
			Operating income (loss)	$	222		$	25.5		$	83.1		$	—	$	-79.5	$	251.1
Total investments in and advances to unconsolidated joint ventures and property and equipment, net of accumulated depreciation, are as follows:
					January 3,			December 28,
	(In millions)				2014			2012
	Infrastructure & Environment				$	8		$	8.2
	Federal Services					95.4			111
	Energy & Construction					21.3			19.1
	Oil & Gas					120.9			140
			Total investments in and advances to unconsolidated joint ventures		$	245.6		$	278.3
	Infrastructure & Environment				$	135.9		$	138.7
	Federal Services					38.8			41.6
	Energy & Construction					52.7			55.4
	Oil & Gas					351.6			424.9
	Corporate					29.1			26.9
			Total property and equipment, net of accumulated depreciation		$	608.1		$	687.5
Total assets by segment are as follows:
				January 3,			December 28,
	(In millions)			2014			2012
	Infrastructure & Environment			$	2,119.50		$	2,222.10
	Federal Services				2,727.60			2,911.60
	Energy & Construction				2,117.60			2,195.90
	Oil & Gas				1,495.60			1,739.30
	Corporate				257.7			192.1
			Total assets	$	8,718.00		$	9,261.00
Geographic Areas
We provide services in many parts of the world. Some of our services are provided to companies in other countries, but are served by our offices located in the U.S. Generally, revenues related to such services are classified within the geographic area where the services are performed, rather than where the client is located. Our revenues and net property and equipment at cost by geographic area are shown below:
				Years Ended
				January 3,			December 28,			December 30,
	(In millions)			2014			2012			2011
	Revenues
			United States	$	8,136.70		$	8,640.20		$	8,329.70
			Canada (1)		1,879.50			1,304.00			180.3
			Other countries		1,001.80			1,056.00			1,065.30
			Eliminations		-27.3			-27.7			-30.3
	Total revenues			$	10,990.70		$	10,972.50		$	9,545.00
Revenues from Canada exceeded 10% of our consolidated revenues for the years ended January 3, 2014 and December 28, 2012 due to our acquisition of Flint in fiscal year 2012.
								January 3,			December 28,
	(In millions)							2014			2012
	Property and equipment, net (1)
			United States					$	313.6		$	320.4
			International:
				Canada					249.9			313.2
				Other countries					44.6			53.9
						Total international			294.5			367.1
	Total property and equipment, net							$	608.1		$	687.5
Property and equipment, net is categorized by the location of incorporation of the legal entities.
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 the 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 the DOE by division for the years ended January 3, 2014, December 28, 2012, and December 30, 2011 are presented below:
				Year Ended
				January 3,			December 28,			December 30,
	(In millions, except percentages)			2014			2012			2011
	The U.S. Army (1)
			Infrastructure & Environment	$	125.2		$	128.4		$	141.7
			Federal Services		1,100.30			1,497.80			1,352.40
			Energy & Construction		149.5			128.8			198.2
	Total U.S. Army			$	1,375.00		$	1,755.00		$	1,692.30
	Revenues from the U.S. Army as a percentage of our consolidated revenues				13%			16%			18%
	DOE
			Infrastructure & Environment	$	4.7		$	5.6		$	5.9
			Federal Services		821.9			984			1,260.50
			Energy & Construction		4.6			0.1			2.6
	Total DOE			$	831.2		$	989.7		$	1,269.00
	Revenues from DOE as a percentage of our consolidated revenues				8%			9%			13%
	Revenues from the federal market sector as a percentage of our consolidated revenues				34%			40%			49%
The U.S. Army includes U.S. Army Corps of Engineers.

COMMITMENTS_AND_CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	12 Months Ended
	Jan. 03, 2014
Notes to Financial Statements [Abstract]	'
COMMITMENTS AND CONTINGENCIES	'
	NOTE 17. 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. On December 20, 2013, the District Court dismissed the majority of the lawsuits and the remainder of the outstanding claims are being transferred to the District Court for final judgment of dismissal.
	WGI Ohio intends to continue to defend these matters vigorously until all claims are dismissed; 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 January 3, 2014, WGI Ohio has incurred total project costs of $261.3 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 January 3, 2014, the DOE has approved one of the REAs for $0.9 million and has authorized $31.9 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 January 3, 2014, WGI Ohio has recorded $81.5 million in accounts receivable for project costs incurred to date in excess of the DOE contracted amount that may not be collected unless and until the claims are favorably 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 ICC arbitration award in the District Court of Colorado. On February 3, 2014, the District Court of Colorado entered judgment confirming the ICC arbitration award and denied Washington Group Bolivia's motion to partially vacate the award.
	We have accrued an estimated probable loss of $10.5 million related to this matter; however, we expect the loss to 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. On January 17, 2014, the Court of Appeal dismissed the appeal and the fine was not reduced.
	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 January 3, 2014, 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 January 3, 2014, we had $35.8 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.
	Lease Obligations
	Total rental expense included in operations for operating leases for the years ended January 3, 2014, December 28, 2012, and December 30, 2011, totaled $236.7 million, $210.0 million, and $188.5 million, respectively. Some of the operating leases are subject to renewal options and escalation based upon property taxes and operating expenses. These operating lease agreements expire at varying dates through 2026. Obligations under operating leases include office and other equipment rentals.
	Obligations under non-cancelable operating lease agreements were as follows:
		(In millions)		Operating Leases
		2014		$	187.1
		2015			153.7
		2016			123.2
		2017			92.1
		2018			70.7
		Thereafter			115.3
			Total minimum lease payments	$	742.1
	Restructuring Costs
	For the years ended January 3, 2014 and December 28, 2012, we did not incur restructuring charges. For the year ended December 30, 2011, we recorded restructuring charges of $5.5 million in our Consolidated Statement of Operations, which consisted primarily of costs for severance and associated benefits and the cost of facility closures. The majority of the restructuring costs resulted from the integration of Scott Wilson into our existing Infrastructure & Environment's U.K. and European business and necessary responses to reductions in market opportunities in Europe.
	During fiscal year 2011, we made $12.9 million of payments related to these restructuring plans. As of December 30, 2011, our restructuring reserves were $3.8 million. As of December 28, 2012, no amounts remain outstanding.

OTHER_COMPREHENSIVE_INCOME_LOS

OTHER COMPREHENSIVE INCOME (LOSS) AND ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	12 Months Ended
	Jan. 03, 2014
Notes to Financial Statements [Abstract]	'
OTHER COMPREHENSIVE INCOME (LOSS) AND ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	'
	NOTE 18. OTHER COMPREHENSIVE INCOME (LOSS) AND ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
	The accumulated balances and reporting period activities, including reclassifications out of accumulated other comprehensive income (loss), are summarized as follows:
	(In millions)			Pension and Post-retirement Related Adjustments (1)		Foreign Currency Translation Adjustments		Loss on Derivative Instruments		Accumulated Other Comprehensive Income (Loss)
	Balances at December 31, 2010			$	-46.1	$	9.2	$	—	$	-36.9
		Amounts reclassified from accumulated other comprehensive income:
			Prior service costs (2)		-3.2		—		—		-3.2
			Actuarial gains (losses) (2)		7.3		—		—		7.3
		Total pre-tax amounts reclassified from accumulated other comprehensive income			4.1		—		—		4.1
		Tax benefit (expense) (3)			10.7		—		—		10.7
		Other comprehensive income before reclassification			-77.5		-11.2		—		-88.7
		Net current-period other comprehensive income			-62.7		-11.2		—		-73.9
	Balances at December 30, 2011			$	-108.8	$	-2	$	—	$	-110.8
	For fiscal year 2011, pension and post-retirement-related adjustments, before-tax, in other comprehensive income included $80.9 million of net loss arising during the year, $4.1 million of amortization of prior service cost and net loss, and $1.9 million of before-tax effect of changes in foreign currency exchange rates.
	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 Consolidated Statements of Operations. See Note 14, “Employee Retirement and Post-Retirement Benefit Plans,” for more information.
	The tax benefit has been reduced by a valuation allowance of $11.6 million in 2011.
	(In millions)			Pension and Post-retirement Related Adjustments (1)		Foreign Currency Translation Adjustments		Loss on Derivative Instruments		Accumulated Other Comprehensive Income (Loss)
	Balances at December 30, 2011			$	-108.8	$	-2	$	—	$	-110.8
		Amounts reclassified from accumulated other comprehensive income:
			Prior service costs (2)		-3		—		—		-3
			Actuarial (gains) losses (2)		10.4		—		—		10.4
			Reclassification adjustment of prior derivative settlement		—		—		0.1		0.1
			Translation adjustment realized upon liquidation of foreign subsidiaries (3)		—		-0.1		—		-0.1
		Total pre-tax amounts reclassified from accumulated other comprehensive income			7.4		-0.1		0.1		7.4
		Tax benefit (expense) (4)			13.3		—		0.4		13.7
		Other comprehensive income before reclassification			-47.3		24.9		-1.1		-23.5
		Net current-period other comprehensive income			-26.6		24.8		-0.6		-2.4
	Balances at December 28, 2012			$	-135.4	$	22.8	$	-0.6	$	-113.2
	For fiscal year 2012, pension and post-retirement-related adjustments, before-tax, in other comprehensive income included $45.6 million of net loss arising during the year, $7.4 million of amortization of prior service cost and net loss, and $1.7 million of before-tax effect of changes in foreign currency exchange rates.
	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 Consolidated Statements of Operations. See Note 14, “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.
	The tax benefit has been reduced by a valuation allowance of $4.9 million in 2012.
	(In millions)			Pension and Post-retirement Related Adjustments (1)		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
		Amounts reclassified from accumulated other comprehensive income:
			Prior service costs (2)		2.3		—		—		2.3
			Actuarial (gains) losses (2)		16.7		—		—		16.7
			Reclassification adjustment of prior derivative settlement		—		—		0.1		0.1
			Translation adjustment realized upon liquidation of foreign subsidiaries (3)		—		1.9		—		1.9
		Total pre-tax amounts reclassified from accumulated other comprehensive income			19		1.9		0.1		21
		Tax benefit (expense) (4)			-24.5		-0.2		—		-24.7
		Other comprehensive income before reclassification			-11.5		-71.9		—		-83.4
		Net current-period other comprehensive income			-17		-70.2		0.1		-87.1
	Balances at January 3, 2014			$	-152.4	$	-47.4	$	-0.5	$	-200.3
	For fiscal year 2013, pension and post-retirement-related adjustments, before-tax, in other comprehensive income included $5.5 million of net loss arising during the year, $19.0 million of amortization of prior service cost and net loss, and $3.6 million of before-tax effect of changes in foreign currency exchange rates.
	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 Consolidated Statements of Operations. See Note 14, “Employee Retirement and Post-Retirement Benefit Plans,” for more information.
	This accumulated other comprehensive income component is reclassified into “Cost of revenues” in our Consolidated Statements of Operations.
	The tax benefit has been reduced by a valuation allowance of $17.9 million in 2013.

RECEIVABLE_AND_DEFERRED_INCOME

RECEIVABLE AND DEFERRED INCOME TAX VALUATION ALLOWANCES	12 Months Ended
	Jan. 03, 2014
Notes to Financial Statements [Abstract]	'
RECEIVABLE AND DEFERRED INCOME TAX VALUATION ALLOWANCES	'
	NOTE 19. RECEIVABLE AND DEFERRED INCOME TAX VALUATION ALLOWANCES
	Receivable allowances are comprised of allowances for amounts that may become uncollectable or unrealizable in the future. We determine these amounts based on historical experience and other currently available information. A valuation allowance for deferred income taxes is established when it is more likely than not that net deferred tax assets will not be realized.
	The following table summarizes the activities in the receivable allowances and the deferred income tax valuation allowance from the beginning of the periods to the end of the periods.
	(In millions)	Balance at the Beginning of the Period		Additions (Charged to Bad Debt Expense)		Additions (Charged to Other Accounts) (1)		Deductions (2)		Other (3)		Balance at the End of the Period
	Year ended January 3, 2014
	Receivable allowances	$	69.7	$	7.4	$	7.7	$	-19.7	$	—	$	65.1
	Deferred income tax valuation allowance	$	137.6	$	—	$	12.7	$	-23.2	$	17.9	$	145
	Year ended December 28, 2012
	Receivable allowances	$	43.1	$	6.6	$	27.4	$	-7.4	$	—	$	69.7
	Deferred income tax valuation allowance	$	124	$	—	$	12.3	$	-14.7	$	16	$	137.6
	Year ended December 30, 2011
	Receivable allowances	$	42.8	$	2.8	$	16.1	$	-18.6	$	—	$	43.1
	Deferred income tax valuation allowance	$	104.2	$	—	$	23.5	$	-15.3	$	11.6	$	124
	These additions were primarily charged to revenues or income tax expense.
	Deductions to the deferred income tax valuation allowance were primarily attributed to foreign and state NOL expirations, change in tax rates and the use of federal and state NOLs.
	Other adjustments to the deferred income tax valuation allowance during the year ended December 28, 2012 were attributable to acquired deferred taxes through the Flint acquisition and items charged to other comprehensive income. For the years ended January 3, 2014 and December 30, 2011, other adjustments to the deferred income tax valuation allowance were charged to other comprehensive income.

SELECTED_QUARTERLY_FINANCIAL_D

SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED)	12 Months Ended
	Jan. 03, 2014
Notes to Financial Statements [Abstract]	'
SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED)	'
	NOTE 20. SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED)
	The following table sets forth selected quarterly financial data for the years ended January 3, 2014 and December 28, 2012. The selected quarterly financial data presented below should be read in conjunction with the rest of the information in this report.
			2013 Quarters Ended
	(In millions, except per share data)		29-Mar		28-Jun		27-Sep		3-Jan
	Revenues		$	2,802.50	$	2,792.00	$	2,735.50	$	2,660.70
	Cost of revenues			-2,651.30		-2,641.60		-2,559.00		-2,564.10
	Operating income			152.6		145.4		179.3		113.5
	Other income (expense) (1)			-2.5		-3.3		1.6		-3.5
	Income tax expense (2)			-42.2		-38.9		-42.3		-44.3
	Net income including noncontrolling interests			86.8		81.7		115.4		45.4
	Noncontrolling interests in income of consolidated subsidiaries			-14.9		-14.4		-26.6		-26.2
	Net income attributable to URS			71.9		67.3		88.8		19.2
	Earnings per share:
		Basic	$	0.97	$	0.91	$	1.21	$	0.26
		Diluted	$	0.96	$	0.91	$	1.2	$	0.26
	Weighted-average shares outstanding:
		Basic		74.4		73.8		73.6		73.6
		Diluted		74.9		74		73.9		74.2
			2012 Quarters Ended
	(In millions, except per share data)		30-Mar		29-Jun		28-Sep		28-Dec
	Revenues		$	2,361.50	$	2,690.70	$	2,947.60	$	2,972.70
	Cost of revenues			-2,203.20		-2,527.50		-2,753.30		-2,810.50
	Acquisition-related expenses (3)			-5.6		-11.3		0.8		—
	Operating income			161.4		149.5		203.6		171.4
	Other income (expense) (1)			2.5		-9.2		10.8		-3.6
	Income tax expense			-48.6		-40.5		-66.1		-34.7
	Net income including noncontrolling interests			105.5		79.1		127.8		113.4
	Noncontrolling interests in income of consolidated subsidiaries			-25.8		-25.5		-21.1		-42.8
	Net income attributable to URS			79.7		53.6		106.7		70.6
	Earnings per share:
		Basic	$	1.08	$	0.72	$	1.43	$	0.95
		Diluted	$	1.07	$	0.72	$	1.43	$	0.95
	Weighted-average shares outstanding:
		Basic		74		74.2		74.5		74.5
		Diluted		74.3		74.6		74.6		74.6
	During fiscal 2013, “Other income (expenses)” represents foreign currency gains (losses) recognized on intercompany financing arrangements. During fiscal 2012, “Other income (expenses)” represents foreign currency gains (losses) recognized on intercompany financing arrangements and foreign currency forward contracts. See further discussion in Note 11, “Indebtedness.”
	During the fourth quarter of 2013, we recorded income tax expense of $10.0 million related to prior quarters. This included U.S. tax on the sale of Canadian properties of $6.4 million and dividends from a Canadian joint venture of $3.6 million. This amount recorded in the fourth quarter was not material to prior quarters and, accordingly, the prior quarters have not been revised. On an after-tax basis, these items resulted in decreases to net income and diluted EPS of $10.0 million and $0.15, respectively.
	For the year ended December 28, 2012, we recorded acquisition-related expenses in connection with our acquisition of Flint. See further discussion in Note 8, “Acquisitions.”

SUBSEQUENT_EVENTS

SUBSEQUENT EVENTS	12 Months Ended
	Jan. 03, 2014
Notes to Financial Statements [Abstract]	'
SUBSEQUENT EVENTS [Text Block]	'
	NOTE 21. SUBSEQUENT EVENTS (UNAUDITED)
	On July 11, 2014, we entered into an Agreement and Plan of Merger (the “merger agreement”) with AECOM Technology Corporation (“AECOM”), ACM Mountain I, LLC, a direct wholly-owned subsidiary of AECOM (“Merger Sub”), and ACM Mountain II, LLC, a direct wholly-owned subsidiary of AECOM (“Merger Sub I”). The merger agreement provides for the merger of Merger Sub with and into our company, with our company continuing as the surviving company and a direct wholly-owned subsidiary of AECOM (the “Merger”). Immediately thereafter, as part of a single integrated transaction with the Merger, pursuant to the merger agreement, we will merge with and into Merger Sub I, with Merger Sub I continuing as the surviving company and a direct wholly-owned subsidiary of AECOM. Subject to the terms and conditions of the merger agreement, holders of URS common stock will receive consideration at $58.79 per share (based on the closing price of AECOM common stock on July 25, 2014). Each outstanding share of URS common stock will be exchanged for per share consideration consisting of 0.734 shares of AECOM common stock and $33.00 in cash. URS stockholders may elect to receive cash or stock consideration, subject to proration in the event of oversubscription for cash consideration. The actual value of the merger consideration to be paid at the closing of the merger will depend on the average closing price of AECOM common stock in the five business days prior to closing.
	Completion of the merger is subject to certain customary conditions, including approval by both the AECOM and URS stockholders, listing of the shares of AECOM common stock to be issued in the merger on the New York Stock Exchange, receipt of required regulatory approvals, effectiveness of AECOM's registration statement on Form S-4 and receipt of customary opinions related to certain tax matters from the parties' respective counsels. The financial statements included in this revised Form 10-K do not reflect any adjustments or otherwise give effect to the proposed merger.
	Based on the implied value of this potential merger to URS stockholders, we performed an interim goodwill impairment test as of July 4, 2014 for all of our seven reporting units. Goodwill impairment reviews involved a two-step process. The first step is a comparison of each reporting unit's fair value to its carrying value. If the carrying value of the reporting units is higher than its fair value, there is an indication that impairment may exist and the second step must be performed to measure the amount of the impairment. We performed the first step of the analysis to compare the fair values of each reporting unit to its carrying amount. Based on the analysis performed, the fair values of all of our reporting units exceeded their carrying values indicating that no impairment exists, and therefore, the second step of the analysis was not deemed necessary.
	Within the Energy & Construction operating segment, reporting units Civil Construction and Mining Group, Industrial/Process Group and Power Group fair values exceeded their carrying values by approximately 8%, 6% and 6%, respectively. Our Oil & Gas reporting unit's fair value exceeded its carrying value by 5%. The remaining three reporting units' fair values substantially exceeded their carrying values.

BUSINESS_BASIS_OF_PRESENTATION1

BUSINESS, BASIS OF PRESENTATION, AND ACCOUNTING POLICIES (POLICIES)	12 Months Ended
	Jan. 03, 2014
Accounting Policies [Abstract]	'
Business Description	'
	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 as of January 31, 2014. We operate through four reporting segments: the Infrastructure & Environment Division, the Federal Services Division, the Energy & Construction Division and the Oil & Gas Division.
Fiscal Year	'
	Our fiscal year is the 52/53-week period ending on the Friday closest to December 31. Our fiscal year ended January 3, 2014 contained 53 weeks.
Use Of Estimates	'
	Use of and Changes in Estimates
	The preparation of our consolidated financial statements in conformity with generally accepted accounting principles requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and related disclosures at the balance sheet dates, and the reported amounts of revenues and expenses during the reporting period. 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.
	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.
	For the year ended January 3, 2014, our results of operations included the recognition of a $31.1 million performance-based incentive fee from our work managing one of our chemical demilitarization programs. This change in estimate resulted in increases of $31.1 million in operating income, $18.7 million in net income, and $0.25 in diluted earnings per share (“EPS”) for the year ended January 3, 2014.
	For the year ended December 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 its 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 year ended December 28, 2012.
	For the year ended December 30, 2011, we recognized $24.8 million from our share of cost savings on an air quality control services project that was realized during the period. This change in estimate resulted in increases of $24.8 million in operating income, $14.9 million in net income, and $0.19 in diluted EPS for the year ended December 30, 2011.
Consolidation Of Variable Interest Entities	'
	Consolidation of Variable Interest Entities
	We participate in joint ventures, which include partnerships and partially-owned limited liability companies, to bid, negotiate and complete specific projects. We are required to consolidate these joint ventures if we hold the majority voting interest or if the joint venture is determined to be a variable interest entity (“VIE”) and we are determined to be the primary beneficiary.
	We are considered to be the primary beneficiary if we have the power to direct the activities that most significantly impact the VIE's economic performance and the obligation to absorb losses or the right to receive benefits of the VIE that could potentially be significant to the VIE. In determining whether we are the primary beneficiary, we take into consideration the following:
	Identifying the significant activities and the parties that have the power to direct them;
	Reviewing the governing board composition and participation ratio;
	Determining the equity, profit and loss ratio;
	Determining the management-sharing ratio;
	Reviewing employment terms, including which joint venture partner provides the project manager; and
	Reviewing the funding and operating agreements.
	Examples of significant activities include the following:
	Program and project management;
	Engineering services;
	Procurement services;
	Construction;
	Construction management; and
	Operations and maintenance services.
	Based on the above, if we determine that the power to direct the significant activities is shared by two or more joint venture parties, then there is no primary beneficiary and no party consolidates the VIE. In making the shared-power determination, we analyze the key contractual terms, governance, related party and de facto agency as they are defined in the accounting standard, and other arrangements to determine if the shared power exists.
	As required by the accounting standard, we perform a quarterly re-assessment to determine whether we are the primary beneficiary. This evaluation may result in consolidation of a previously unconsolidated joint venture or in deconsolidation of a previously consolidated joint venture. See Note 6, “Joint Ventures,” for further information on our VIEs.
Revenue Recognition	'
	Revenue Recognition
	We recognize revenues from engineering, construction and construction-related contracts using the percentage-of-completion method as project progress occurs. Service-related contracts, including operations and maintenance services and a variety of technical assistance services, are accounted for using the proportionate performance method as project progress occurs.
	Percentage of Completion. Under the percentage-of-completion method, revenue is recognized as contract performance progresses. We estimate the progress towards completion to determine the amount of revenue and profit to recognize. We generally utilize a cost-to-cost approach in applying the percentage-of-completion method, where revenue is earned in proportion to total costs incurred, divided by total costs expected to be incurred. Costs are generally determined from actual hours of labor effort expended at per-hour labor rates calculated using a labor dollar multiplier that includes direct labor costs and allocable overhead costs. Direct non-labor costs are charged as incurred plus any mark-up permitted under the contract.
	Under the percentage-of-completion method, recognition of profit is dependent upon the accuracy of a variety of estimates, including engineering progress, materials quantities, and achievement of milestones, incentives, penalty provisions, labor productivity, cost estimates and others. Such estimates are based on various professional judgments we make with respect to those factors and are subject to change as the project proceeds and new information becomes available.
	Proportional Performance. Our service contracts, primarily performed by our Federal Services Division, are accounted for using the proportional performance method, under which revenue is 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.
	Revenues from all contracts may vary based on the actual number of labor hours worked and other actual contract costs incurred. If actual labor hours and other contract costs exceed the original estimate agreed to by our client, we generally obtain a change order, contract modification or successfully prevail in a claim in order to receive and recognize additional revenues relating to the additional costs (see “Change Orders and Claims” below).
	If estimated total costs on any contract indicate a loss, we charge the entire estimated loss to operations in the period the loss becomes known. The cumulative effect of revisions to revenue, estimated costs to complete contracts, including penalties, incentive awards, change orders, claims, anticipated losses, and others are recorded in the accounting period in which the events indicating a loss or change in estimates are known and the loss can be reasonably estimated. Such revisions could occur at any time and the effects may be material.
	We have a history of making reasonably dependable estimates of the extent of progress towards completion, contract revenue and contract completion costs on our long-term engineering and construction contracts. However, due to uncertainties inherent in the estimation process, it is possible that actual completion costs may vary from estimates.
	Change Orders and Claims. Change orders and/or claims occur when changes are experienced once contract performance is underway, and may arise under any of the contract types described below.
	Change orders are modifications of an original contract that effectively change the existing provisions of the contract without adding new scope or terms. Change orders may include changes in specifications or designs, manner of performance, facilities, equipment, materials, sites and period of completion of the work. Either we or our clients may initiate change orders. Client agreement as to the terms of change orders is, in many cases, reached prior to work commencing; however, sometimes circumstances require that work progress without obtaining client agreement. Costs related to change orders are recognized as incurred. Revenues attributable to change orders that are unapproved as to price or scope are recognized to the extent that costs have been incurred if the amounts can be reliably estimated and their realization is probable. Revenues in excess of the costs attributable to change orders that are unapproved as to price or scope are recognized only when realization is assured beyond a reasonable doubt. Change orders that are unapproved as to both price and scope are evaluated as claims.
	Claims are amounts in excess of agreed contract prices that we seek to collect from our clients or others for customer-caused delays, errors in specifications and designs, contract terminations, change orders that are either in dispute or are unapproved as to both scope and price, or other causes of unanticipated additional contract costs. Claims are included in total estimated contract revenues when the contract or other evidence provides a legal basis for the claim, when the additional costs are caused by circumstances that were unforeseen at the contract date and are not the result of the deficiencies in the contract performance, when the costs associated with the claim are identifiable, and when the evidence supporting the claim is objective and verifiable. Revenue on claims is recognized only to the extent that contract costs related to the claims have been incurred and when it is probable that the claim will result in a bona fide addition to contract value which can be reliably estimated. No profit is recognized on claims until final settlement occurs. As a result, costs may be recognized in one period while revenues may be recognized when client agreement is obtained or claims resolution occurs, which can be in subsequent periods.
	“At-risk” and “Agency” Contracts. The amount of revenues we recognize also depends on whether the contract or project represents an at-risk or an agency relationship between the client and us. Determination of the relationship is based on characteristics of the contract or the relationship with the client. For at-risk relationships where we act as the principal to the transaction, the revenue and the costs of materials, services, payroll, benefits, and other costs are recognized at gross amounts. For agency relationships, where we act as an agent for our client, only the fee revenue is recognized, meaning that direct project costs and the related reimbursement from the client are netted. Revenues from agency contracts and collaborative arrangements were not a material part of revenues for any period presented.
	In classifying contracts or projects as either at-risk or agency, we consider the following primary characteristics to be indicative of at-risk relationships: (i) we acquire the related goods and services using our procurement resources, (ii) we assume the risk of loss under the contract and (iii) we are responsible for insurance coverage, employee-related liabilities and the performance of subcontractors.
	We consider the following primary characteristics to be indicative of agency relationships: (i) our client owns the work facilities utilized under the contract, (ii) we act as a procurement agent for goods and services acquired with client funds, (iii) our client is invoiced for our fees, (iv) our client is exposed to the risk of loss and maintains insurance coverage, and (v) our client is responsible for employee-related benefit plan liabilities and any remaining liabilities at the end of the contract.
Revenue Recognition, Contract Types	'
	Contract Types
	Our contract types include cost-plus, target-price, fixed-price, and time-and-materials contracts. Revenue recognition is determined based on the nature of the service provided, irrespective of the contract type, with engineering, construction and construction-related contracts accounted for under the percentage-of-completion method and service-related contracts accounted for under the proportional performance method.
	Cost-Plus Contracts. We enter into four major types of cost-plus contracts. Revenue for the majority of our cost-plus contracts is recognized using the percentage-of-completion method:
	Cost-Plus Fixed Fee. Under cost-plus fixed fee contracts, we charge our clients for our costs, including both direct and indirect costs, plus a fixed negotiated fee.
	Cost-Plus Fixed Rate. Under our cost-plus fixed rate contracts, we charge clients for our direct costs plus negotiated rates based on our indirect costs.
	Cost-Plus Award Fee. Some cost-plus contracts provide for award fees or penalties based on performance criteria in lieu of a fixed fee or fixed rate. Other contracts include a base fee component plus a performance-based award fee. In addition, we may share award fees with subcontractors and/or our employees. We accrue fee sharing as related award fee revenue is earned. We take into consideration the award fee or penalty on contracts when estimating revenues and profit rates, and we record revenues related to the award fees when there is sufficient information to assess anticipated contract performance. On contracts that represent higher than normal risk or technical difficulty, we defer all award fees until an award fee letter is received. Once an award fee letter is received, the estimated or accrued fees are adjusted to the actual award amount.
	Cost-Plus Incentive Fee. Some of our cost-plus contracts provide for incentive fees based on performance against contractual milestones. The amount of the incentive fees varies, depending on whether we achieve above-, at- or below-target results. We recognize incentive fees revenues as milestones are achieved, assuming that we will achieve at-target results, unless our estimates indicate our cost at completion to be significantly above or below target.
	Target-Price Contracts. Under our target-price contracts, project costs are reimbursable. Our fee is established against a target budget that is subject to changes in project circumstances and scope. Should the project costs exceed the target budget within the agreed-upon scope, we generally degrade a portion of our fee or profit to mitigate the excess cost; however, the customer reimburses us for the costs that we incur if costs continue to escalate beyond our expected fee. If the project costs are less than the target budget, we generally recover a portion of the project cost savings as additional fee or profit. We recognize revenues on target-price contracts using the percentage-of-completion method.
	Fixed-Price Contracts. We enter into two major types of fixed-price contracts:
	Firm Fixed-Price (“FFP”). Under FFP contracts, our clients pay us an agreed fixed-amount negotiated in advance for a specified scope of work. We generally recognize revenues on FFP contracts using the percentage-of-completion method. If the nature or circumstances of the contract prevent us from preparing a reliable estimate at completion, we will delay profit recognition until adequate information about the contract's progress becomes available. Prior to completion, our recognized profit margins on any FFP contract depend on the accuracy of our estimates and will increase to the extent that our current estimates of aggregate actual costs are below amounts previously estimated. Conversely, if our current estimated costs exceed prior estimates, our profit margins will decrease and we may realize a loss on a project.
	Fixed-Price Per Unit (“FPPU”). Under our FPPU contracts, clients pay us a set fee for each service or production transaction that we complete. We recognize revenues under FPPU contracts as we complete the related service or production transactions for our clients generally using the proportional performance method. Some of our FPPU contracts are subject to maximum contract values.
	Time-and-Materials Contracts. Under our time-and-materials contracts, we negotiate hourly billing rates and charge our clients based on the actual time that we spend on a project. In addition, clients reimburse us for our actual out-of-pocket costs of materials and other direct incidental expenditures that we incur in connection with our performance under the contract. The majority of our time-and-material contracts are subject to maximum contract values and, accordingly, revenues under these contracts are generally recognized under the percentage-of-completion method. However, time-and-materials contracts that are service-related contracts are accounted for utilizing the proportional performance method. Revenues on contracts that are not subject to maximum contract values are recognized based on the actual number of hours we spend on the projects plus any actual out-of-pocket costs of materials and other direct incidental expenditures that we incur on the projects. Our time-and-materials contracts also generally include annual billing rate adjustment provisions.
Revenue Recognition, Segmenting And Combining Contracts	'
	Segmenting and Combining Contracts
	Occasionally a contract may include several elements or phases, each of which was negotiated separately with our client and agreed to be performed without regard to the performance of others. We follow the criteria set forth in the accounting guidance when combining and segmenting contracts. When combining contracts, revenues and profits are earned and reported uniformly over the performance of the combined contracts. When segmenting contracts, we assign revenues and costs to the different elements or phases to achieve different rates of profitability based on the relative value of each element or phase to the estimated contract revenues. Values assigned to the segments are based on our normal historical prices and terms of such services to other clients. Also, a group of contracts may be so closely related that they are, in effect, part of a single project with an overall profit margin.
Accounts Receivable And Costs And Accrued Earnings In Excess Of Billings On Contracts	'
	Accounts Receivable and Costs and Accrued Earnings in Excess of Billings on Contracts
	Accounts receivable in the accompanying 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 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.
	Accounts receivable and costs and accrued earnings in excess of billings on contracts include certain amounts recognized related to unapproved change orders (amounts representing the value of proposed contract modifications, but which are unapproved as to either price or scope) and claims, (change orders that are unapproved as to both price and scope) that have not been collected and, in the case of balances included in costs and 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. Most of those balances are not material and are typically resolved in the ordinary course of business.
Billings In Excess Of Costs And Accrued Earnings On Contracts	'
	Billings in Excess of Costs and Accrued Earnings on Contracts
	Billings in excess of costs and accrued earnings on contracts in the accompanying Consolidated Balance Sheets is comprised 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 majority of the unearned project-related costs will be earned over the next twelve months.
	We record provisions for estimated losses on uncompleted contracts in the period in which such losses become probable. The cumulative effects of revisions to contract revenues and estimated completion costs are recorded in the accounting period in which the amounts become probable and can be reasonably estimated. These revisions can include such items as the effects of change orders and claims, warranty claims, liquidated damages or other contractual penalties, adjustments for audit findings on U.S. or other government contracts and contract closeout settlements.
Receivable Allowances	'
	Receivable Allowances
	We reduce our accounts receivable and costs and accrued earnings in excess of billings on contracts by estimating an allowance for amounts that may become uncollectible or unrealizable in the future. We determine our estimated allowance for uncollectible amounts based on management's judgments regarding our operating performance related to the adequacy of the services performed or products delivered, the status of change orders and claims, our experience settling change orders and claims and the financial condition of our clients, which may be dependent on the type of client and current economic conditions to which the client may be subject.
Classification Of Current Assets And Liabilities	'
	Classification of Current Assets and Liabilities
	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. For contracts with terms that exceed one year, retentions are generally billed beyond a year from the service date. Our Unbilled Accounts Receivable include amounts related to milestone payment clauses, which may provide for payments to be received beyond a year from the date the Unbilled Accounts Receivable are recognized. Unbilled Accounts Receivable related to performance-based incentives that we do not expect to bill within twelve months of the balance sheet date are included in “Other long-term assets.” 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.
	Subcontractor payables, subcontractor retentions, and billings in excess of costs and accrued earnings on contracts each contain amounts that, depending on contract performance, resolution of U.S. government contract audits, negotiations, change orders, claims or changes in facts and circumstances, may not require payment within one year.
	Accounts receivable – retentions represent amounts billed to clients for services performed that, by the underlying contract terms, will not be paid until the projects meet contractual milestones, or are at or near completion. Correspondingly, subcontractors payable – retentions represent amounts billed to us by subcontractors for services performed that, by their underlying contract terms, do not require payment by us until the projects are at or near completion.
	Accounts payable and subcontractors payable include our estimate of incurred but unbilled subcontractor costs.
Concentrations Of Credit Risk	'
	Concentrations of Credit Risk
	Our accounts receivable and costs and accrued earnings in excess of billings on contracts are potentially subject to concentrations of credit risk. Our credit risk on accounts receivable is limited due to the large number of contracts for clients that comprise our customer base and their dispersion across different business and geographic areas. We estimate and maintain an allowance for potential uncollectible accounts, and such estimates have historically been within management's expectations. See Note 4, “Accounts Receivable and Costs and Accrued Earnings in Excess of Billings on Contracts” for more details. Our cash and cash equivalents are maintained in accounts held by major banks and financial institutions located primarily in North America, Europe and Asia Pacific.
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 January 3, 2014 and December 28, 2012, restricted cash balances were $12.8 million and $17.1 million, respectively. These amounts were included in “Other current assets” on our Consolidated Balance Sheets. For cash held by our consolidated joint ventures, see Note 6, “Joint Ventures.”
Derivative Instruments	'
	Derivative Instruments
	We are exposed to the risk of changes in interest rates on our long-term debt. Sometimes, we manage this risk through the use of derivative instruments. All derivative financial instruments are recorded on the balance sheet at fair value. At dates entered into, the derivatives hedge the variability in cash flows received or paid in connection with a recorded asset or liability.
	Changes in the fair value of cash flow hedges are recorded in other comprehensive income until earnings are affected by the variability of cash flows of the hedged transactions. We would discontinue hedge accounting prospectively when the derivatives are no longer effective in offsetting changes in cash flows of the hedged items, the derivatives are sold or terminated or it is no longer probable that the forecasted transactions will occur. Cash flows resulting from derivatives that are accounted for as hedges may be classified in the same category as the cash flows from the items being hedged.
	We use derivative instruments only for risk management purposes and not for speculation or trading. The amount, maturity, and other specifics of the hedge, if any, are determined by the specific derivative instrument. If a derivative contract is entered into, we either determine that it is an economic hedge or we designate the derivative as a cash flow or fair value hedge. We formally document all relationships between hedging instruments and the hedged items, as well as our risk management objectives and strategies for undertaking various hedged transactions. For those derivatives designated as cash flow or fair value hedges, we formally assess, both at the derivatives' inception and on an ongoing basis, whether the derivatives that are used in hedging transactions are highly effective in offsetting changes in the hedged items. The ineffective portion of hedging transactions is recognized in current income.
Fair Value Measurement	'
	Fair Value Measurement
	We determine the fair values of our financial instruments, including debt instruments and pension and post-retirement plan assets based on inputs or assumptions that market participants would use in pricing an asset or a liability. We categorize our instruments using a valuation hierarchy for disclosure of the inputs used to measure fair value. This hierarchy prioritizes the inputs into three broad levels as follows: Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities; Level 2 inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument; Level 3 inputs are unobservable inputs based on our own assumptions used to measure assets and liabilities at fair value. The classification of a financial asset or liability within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement.
	The recorded values of cash and cash equivalents, accounts receivable, and accounts payable approximate fair values based on their short-term nature.
	Our long-term debt includes both floating-rate and fixed rate instruments. See Note 12, “Fair Value of Debt Instruments and Derivative Instruments,” for additional disclosure.
	Our fair value measurement methods may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Although we believe our valuation methods are appropriate and consistent with those used by other market participants, the use of different methodologies or assumptions to determine fair value could result in a different fair value measurement at the reporting date.
Inventory	'
	Inventory
	Inventory is stated at cost (first-in, first-out or average cost), but not in excess of net realizable value. Net realizable value represents the estimated selling price for inventory less the estimated costs of completion and the estimated costs associated with the sale. The cost of inventory includes expenditures incurred in acquiring the inventory, production or conversion costs, and other costs incurred in bringing the inventory items to their existing location and condition. For fabricated inventory and work in progress, cost includes overhead allocated based on normal operating capacity. A write down for excess or inactive inventory is recorded based upon an analysis that considers current inventory levels, historical usage patterns, future sales expectations and salvage value. See Note 5, “Inventory,” for additional disclosure.
Property And Equipment	'
	Property and Equipment
	Property and equipment are stated at cost. In the year assets are retired or otherwise disposed of, the costs and related accumulated depreciation are removed from the accounts and any gain or loss on disposal is reflected in the Consolidated Statement of Operations. Depreciation is provided on the straight-line and the declining methods using estimated useful lives less residual value. Leasehold improvements are amortized over the length of the lease or estimated useful life, whichever is less. We capitalize our repairs- and maintenance-related costs that extend the estimated useful lives of property and equipment; otherwise, repairs- and maintenance-related costs are expensed. Whenever events or changes in circumstances indicate that the carrying amount of long-lived assets may not be recoverable, we compare the carrying value to the fair value, which is measured using the prices in active markets for similar assets, and recognize the difference as an impairment loss. See Note 7, “Property and Equipment,” for additional disclosure.
Internal-Use Computer Software	'
	Internal-Use Computer Software
	We expense or capitalize costs associated with the development of internal-use software as follows:
	Preliminary Project Stage: Both internal and external costs incurred during this stage are expensed as incurred.
	Application Development Stage: Both internal and external costs incurred to purchase and develop computer software are capitalized after the preliminary project stage is completed and management authorizes the computer software project. However, training costs and the process of data conversion from the old system to the new system, which includes purging or cleansing of existing data, reconciliation or balancing of old data to the converted data in the new system, are expensed as incurred.
	Post-Implementation/Operation Stage: All training costs and maintenance costs incurred during this stage are expensed as incurred.
	Costs of upgrades and enhancements are capitalized if the expenditures will result in adding functionality to the software. Capitalized software costs are depreciated using the straight-line method over the estimated useful life of the related software, which may be up to ten years.
Goodwill And Intangible Assets	'
	Goodwill and Intangible Assets
	We amortize our intangible assets based on the period over which the contractual or economic benefits of the intangible assets are expected to be realized. We assess our intangible assets for impairment whenever events or changes in circumstances indicate that the carrying value of an intangible asset may not be recoverable.
	Goodwill represents the excess of the cost of an acquired entity over the net of the amounts assigned to assets acquired and liabilities assumed. Goodwill is allocated to the reporting units based on the respective fair values of the reporting units at the time of the various acquisitions that gave rise to the recognition of goodwill or at the time of a reorganization which impacts the composition of the reporting units. We assess our goodwill for impairment at least annually as of the end of the first month following our September reporting period or whenever events or changes in circumstances indicate that the carrying value of the asset may not be recoverable.
	We believe the methodology that we use to review impairment of goodwill, which includes a significant amount of judgment and estimates, provides us with a reasonable basis to determine whether impairment has occurred. However, many of the factors employed in determining whether our goodwill is impaired are outside of our control and it is reasonably likely that assumptions and estimates will change in future periods. These changes could result in future impairments.
	Goodwill impairment reviews involve a two-step process. The first step is a comparison of each reporting unit's fair value to its carrying value. We estimate fair value using both the income approach and the market approach.
	If the carrying value of the reporting unit is higher than its fair value, there is an indication that impairment may exist and the second step must be performed to measure the amount of impairment. The amount of impairment is determined by comparing the implied fair value of the reporting unit's goodwill to the carrying value of the goodwill calculated in the same manner as if the reporting unit were being acquired in a business combination. If the implied fair value of goodwill is less than the recorded goodwill, we would record an impairment charge for the difference.
	There are several instances that may cause us to further test our goodwill for impairment between the annual testing periods including: (i) continued deterioration of market and economic conditions that may adversely impact our ability to meet our projected results; (ii) declines in our stock price caused by continued volatility in the financial markets that may result in increases in our weighted-average cost of capital or other inputs to our goodwill assessment; and (iii) the occurrence of events that may reduce the fair value of a reporting unit below its carrying amount, such as the sale of a significant portion of one or more of our reporting units.
	If our goodwill were impaired, we would be required to record a non-cash charge that could have a material adverse effect on our consolidated financial statements.
	See Note 9, “Goodwill and Intangible Assets,” for more disclosure about our test for goodwill impairment.
Self-Insurance Reserves	'
	Self-insurance Reserves
	Self-insurance reserves represent reserves established as a result of insurance programs under which we self-insure portions of our business risks. We carry substantial premium-paid, traditional risk transfer insurance for our various business risks; however, we self-insure and establish reserves for the retentions on workers' compensation insurance, general liability, automobile liability, and professional errors and omissions liability.
Foreign Currency Translation	'
	Foreign Currency Translation
	We determine the functional currency of our international operating entities based upon the currency of the primary environment in which they operate. Where the functional currency is not the U.S. dollar, translation of assets and liabilities to U.S. dollars is based on exchange rates at the balance sheet date. Translation of revenue and expenses to U.S. dollars is based on the average rate during the period. Foreign currency differences arising from transactions denominated in currencies other than the functional currency, such as selling services or purchasing materials, results in transaction gains or losses, and are generally included in results of operations.
	Foreign currency differences arising from the translation of intercompany loans from a foreign currency into the functional currency of an entity, which are of a long-term investment nature (that is, settlement is not planned or anticipated in the foreseeable future) are recorded in “Accumulated other comprehensive income (loss)” on our Consolidated Balance Sheets. Foreign currency differences arising from the translation of other intercompany loans are recorded in “Other income (expense)” on our Consolidated Statements of Operations.
Income Taxes	'
	Income Taxes
	We use the asset and liability approach for financial accounting and reporting for income taxes. We file income, franchise, gross receipts and similar tax returns in many jurisdictions. Our tax returns are subject to audit by the Internal Revenue Service, most states in the U.S., and by various government agencies representing many jurisdictions outside the U.S. We estimate and provide for additional income taxes that may be assessed by the various taxing authorities. Deferred income tax assets and liabilities are computed annually for differences between the financial statement and tax bases of assets and liabilities that will result in taxable or deductible amounts in the future based on enacted tax laws and rates applicable to the periods in which the differences are expected to affect taxable income. See Note 13, “Income Taxes,” for additional disclosure.
	Valuation allowances based on our judgments and estimates are established when necessary to reduce deferred tax assets to the amount expected to be realized and based on expected future operating results and available tax alternatives. Our estimates are based on facts and circumstances in existence as well as interpretations of existing tax regulations and laws applied to the facts and circumstances. Management believes that realization of deferred tax assets in excess of the valuation allowance is more likely than not.
Pension Plans And Post-retirement Benefits	'
	Pension Plans and Post-retirement Benefits
	We account for our defined benefit pension plans and post-retirement benefits using actuarial valuations that are based on assumptions, including discount rates, long-term rates of return on plan assets, and rates of change in participant compensation levels. We evaluate the funded status of each of our defined benefit pension plans and post-retirement benefit plans using these assumptions, consider applicable regulatory requirements, tax deductibility, reporting considerations and other relevant factors, and thereby, determine the appropriate funding level for each period. The discount rate used to calculate the present value of the pension and post-retirement benefit obligations is assessed at least annually. The discount rate represents the rate inherent in the price at which the plans' obligations are intended to be settled at the measurement date. See Note 14, “Employee Retirement and Post-Retirement Benefit Plans,” for additional disclosure.
Noncontrolling Interests	'
	Noncontrolling interests
	Noncontrolling interests represent the equity investments of the minority owners in our joint ventures and other subsidiary entities that we consolidate in our financial statements.
Business Combinations	'
	Business Combinations
	We account for business combinations under the purchase accounting method. The cost of an acquired company is assigned to the tangible and intangible assets purchased and the liabilities assumed on the basis of their fair values at the date of acquisition. The determination of fair values of assets and liabilities acquired requires us to make estimates and use valuation techniques when market value is not readily available. Any excess of purchase price over the fair value of net tangible and intangible assets acquired is allocated to goodwill. The transaction costs associated with business combinations are expensed as they are incurred. See Note 8, “Acquisitions,” for more information.

EARNINGS_PER_SHARE_TABLES

EARNINGS PER SHARE (TABLES)	12 Months Ended
	Jan. 03, 2014
Earnings per share reconciliation [Abstract]	'
Earnings per share [Table Text Block]	'
			Year Ended
			January 3,		December 28,		December 30,
	(In millions)		2014		2012		2011
	Weighted-average common stock shares outstanding (1)		73.9		74.3		77.3
	Effect of dilutive restricted stock awards and units and employee stock purchase plan shares (2)		0.8		0.2		—
	Weighted-average common stock outstanding – Diluted		74.7		74.5		77.3
	Weighted-average shares of common stock outstanding is net of treasury stock and excludes nonvested restricted stock awards.
	No dilution was applied to our basic weighted-average shares outstanding for the year ended December 30, 2011, due to a goodwill impairment charge that resulted in a net loss for the year.
Earnings per share, anti-dilutive awards [Table Text Block]	'
			January 3,	December 28,		December 30,
		(In millions)	2014	2012		2011
		Anti-dilutive equity awards not included above	—†	1.1		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)	12 Months Ended
	Jan. 03, 2014
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]	'
							January 3,			December 28,
		(In millions)					2014			2012
		Accounts receivable:
				U.S. federal government			$	353.2		$	376.2
				Others				1,039.40			1,178.60
					Total accounts receivable		$	1,392.60		$	1,554.80
		Unbilled Accounts Receivable:
				U.S. federal government			$	855.7		$	892.7
				Others				796.9			756.5
					Total			1,652.60			1,649.20
					Less: Amounts included in Other long-term assets			-131.1			-264.9
					Unbilled Accounts Receivable		$	1,521.50		$	1,384.30
Schedule of Unbilled Accounts Receivable [Table Text Block]	'
		(In millions)				Amounts included in “Other long-term assets”			Amounts included in “Other long-term liabilities"
		Balances as of December 30, 2011				$	185		$	105.6
			Additions				209.2			38.9
			Reclassification from long-term to short-term				-129.3			-37.5
		Balances as of December 28, 2012					264.9			107
			Additions				241.7			59.7
			Reclassification from long-term to short-term				-375.5			-164.5
		Balances as of January 3, 2014				$	131.1		$	2.2
		(In millions)				Amounts included in “Other long-term assets”			Amounts included in “Other long-term liabilities"
		Balances as of December 30, 2011				$	185		$	105.6
			Additions				209.2			38.9
			Reclassification from long-term to short-term				-129.3			-37.5
		Balances as of December 28, 2012					264.9			107
			Additions				241.7			59.7
			Reclassification from long-term to short-term				-375.5			-164.5
		Balances as of January 3, 2014				$	131.1		$	2.2

INVENTORY_TABLES

INVENTORY (TABLES)	12 Months Ended
	Jan. 03, 2014
Inventory [Abstract]	'
Inventory [Table Text Block]	'
				January 3,		December 28,
		(In millions)		2014		2012
		Raw materials		$	8.5	$	14.2
		Work in progress			7.4		9.8
		Finished goods			23.2		24.9
		Supplies			10.1		12.6
			Total	$	49.2	$	61.5

JOINT_VENTURES_TABLES

JOINT VENTURES (TABLES)	12 Months Ended
	Jan. 03, 2014
Consolidated Joint Ventures [Abstract]	'
Schedule of consolidated joint ventures [Table Text Block]	'
						January 3,		December 28,
		(In millions)				2014		2012
		Cash and cash equivalents				$	89.4	$	80.1
		Net accounts receivable					199.7		282.2
		Other current assets					3		2.9
		Noncurrent assets					143.1		143.3
					Total assets	$	435.2	$	508.5
		Accounts and subcontractors payable				$	94.9	$	185
		Billings in excess of costs and accrued earnings on contracts					14.9		8.7
		Accrued expenses and other					39.5		40
		Noncurrent liabilities					11.9		22.7
			Total liabilities				161.2		256.4
		Total URS equity					128.2		110.2
		Noncontrolling interests					145.8		141.9
			Total owners’ equity				274		252.1
					Total liabilities and owners’ equity	$	435.2	$	508.5
Unconsolidated Joint Ventures [Abstract]	'
Schedule of unconsolidated joint ventures [Table Text Block]	'
		(In millions)	Unconsolidated VIEs
		3-Jan-14
		Current assets	$	615.6
		Noncurrent assets	$	36.8
		Current liabilities	$	433.2
		Noncurrent liabilities	$	7
		28-Dec-12
		Current assets	$	594.1
		Noncurrent assets	$	23.8
		Current liabilities	$	372.5
		Noncurrent liabilities	$	7.8
		For the year ended January 3, 2014 (1)
		Revenues	$	2,154.30
		Cost of revenues	$	-1,909.00
		Income from continuing operations before tax	$	245.3
		Net income	$	218.9
		For the year ended December 28, 2012 (1)
		Revenues	$	1,662.20
		Cost of revenues	$	-1,440.60
		Income from continuing operations before tax	$	221.6
		Net income	$	206
		For the year ended December 30, 2011 (1)
		Revenues	$	1,498.00
		Cost of revenues	$	-1,201.50
		Income from continuing operations before tax	$	296.5
		Net income	$	274.7
	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)	12 Months Ended
	Jan. 03, 2014
Property plant and equipment [Abstract]	'
Property, plant and equipment [Table Text Block]	'
				January 3,		December 28,
		(In millions)		2014		2012
		Construction and mining equipment		$	244.4	$	266.4
		Computer software			238.9		219.5
		Computer hardware			216.1		198.2
		Vehicles and automotive equipment			171.6		172.2
		Leasehold improvements			141.9		130.1
		Land and buildings			100.2		114.1
		Furniture and fixtures			94.7		97.7
		Other equipment			67.5		72.4
		Construction in progress			9.3		15.6
					1,284.60		1,286.20
		Accumulated depreciation and amortization			-676.5		-598.7
			Property and equipment, net (1)	$	608.1	$	687.5
Property and equipment estimated useful lives [Table Text Block]	'
	The unamortized computer software costs were $76.0 million and $71.1 million, respectively, as of January 3, 2014 and December 28, 2012.
			Estimated Useful Lives
		Computer software and hardware and other equipment	3 – 10 years
		Vehicles and automotive equipment	3 – 12 years
		Construction and mining equipment	3 – 15 years
		Furniture and fixtures	3 – 10 years
		Leasehold improvements (1)	1 – 20 years
		Buildings	10 – 45 years
	Leasehold improvements are amortized over the length of the lease or estimated useful life, whichever is less.

ACQUISITION_TABLES

ACQUISITION (TABLES)	12 Months Ended
	Jan. 03, 2014
Acquisition [Abstract]	'
Business acquisition - purchase price allocation [Table Text Block]	'
		Final allocation of purchase price:
		(In millions)
		Identifiable assets acquired and liabilities assumed:
				Cash and cash equivalents							$	4
				Trade and other receivables								544
				Inventory								61
				Other current assets								32
				Investments in and advances to unconsolidated joint ventures								147
				Property and equipment								420
				Other long-term assets								10
				Identifiable intangible assets:
						Customer relationships, contracts and backlog						163
						Trade names						93
						Other						10
								Total amount allocated to identifiable intangible assets				266
				Current liabilities								-244
				Net deferred tax liabilities								-77
				Long-term debt								-236
				Other long-term liabilities								-31
								Total identifiable net assets acquired				896
		Goodwill										456
								Total purchase price			$	1,352
Business acquisition, pro forma information [Abstract]	'
Business acquisition, pro forma information [Table Text Block]	'
						Year Ended			Year Ended
		(In millions, except per share data)				28-Dec-12			30-Dec-11
		Revenues				$	11,785.80		$	11,128.70
		Net income (loss) including noncontrolling interests				$	409.1		$	-6.9
		Net income (loss) attributable to URS				$	292.9		$	-135.4
		Earnings (loss) per share:
			Basic EPS			$	3.94		$	-1.75
			Diluted EPS			$	3.93		$	-1.75
Business acquisition, pro forma nonrecurring adjustments [Table Text Block]	'
		Pre-tax, nonrecurring adjustment (In millions)			Year Ended			Year Ended
						28-Dec-12			December 30, 2011 (1)
		Acquisition-related expenses			$	27.7		$	-27.5
	Included in the pro forma results for the year ended December 30, 2011 is a nonrecurring adjustment related to URS and Flint acquisition-related expenses. These expenses were included in the fiscal year 2011 pro forma results as if the acquisition occurred at the beginning of that fiscal year.

GOODWILL_TABLES

GOODWILL (TABLES)	12 Months Ended
	Jan. 03, 2014
Goodwill and intangible assets disclosure [Abstract]	'
Changes in goodwill allocated to reportable segments [Table Text Block]	'
	(In millions)								Goodwill Balance as of December 30, 2011 (1)			Acquisitions			Inter-segment Transfer (2)			Other Adjustments (3)		Goodwill Balance as of December 28, 2012
	Infrastructure & Environment Operating Segment								$	758.2		$	—		$	-21.5		$	14.8	$	751.5
	Within the Federal Services Operating Segment:
			Federal Services Group							705.6			—			—			1.7		707.3
			Global Management and Operations Services Group							565.4			—			—			—		565.4
					Total Federal Services Operating Segment					1,271.00			—			—			1.7		1,272.70
	Within the Energy & Construction Operating Segment:
			Civil Construction & Mining Group							293.9			—			—			—		293.9
			Industrial/Process Group							189.3			67.8			-4.2			—		252.9
			Power Group							735.1			—			—			—		735.1
					Total Energy & Construction Operating Segment					1,218.30			67.8			-4.2			—		1,281.90
	Oil & Gas Operating Segment									—			388.5			25.7			1.3		415.5
							Total		$	3,247.50		$	456.3		$	—		$	17.8	$	3,721.60
	Balances as of December 30, 2011 reflect the realignment of our business as further described in Note 16, “Segment and Related Information.” Of the goodwill, $565.4 million related to our Global Management and Operations Services Group was transferred from the Energy & Construction Division to the Federal Services Division.
	For the year ended December 28, 2012, “Inter-segment transfers” include adjustments of $21.5 million to transfer process engineering, and $4.2 million related to the realignment of operations and maintenance services to the oil and gas industry among our Oil & Gas, Infrastructure & Environment, and Energy & Construction Divisions.
	For the year ended December 28, 2012, “Other adjustments” include an adjustment for foreign currency translation of $16.1 million, and an adjustment for the final allocation of our purchase price of Apptis of $1.7 million.
	(In millions)								Goodwill Balance as of December 28, 2012			Acquisitions			Other Adjustments (1)			Goodwill Balance as of January 3, 2014
	Infrastructure & Environment Operating Segment								$	751.5		$	—		$	-14.1		$	737.4
	Within the Federal Services Operating Segment:
			Federal Services Group							707.3			—			—			707.3
			Global Management and Operations Services Group							565.4			—			—			565.4
					Federal Services Operating Segment					1,272.70			—			—			1,272.70
	Within the Energy & Construction Operating Segment:
			Civil Construction & Mining Group							293.9			—			—			293.9
			Industrial/Process Group							252.9			—			-3.2			249.7
			Power Group							735.1			—			—			735.1
					Total Energy & Construction Operating Segment					1,281.90			—			-3.2			1,278.70
	Oil & Gas Operating Segment									415.5			—			-8.7			406.8
							Total		$	3,721.60		$	—		$	-26		$	3,695.60
	For the year ended January 3, 2014, “Other adjustments” include an adjustment for foreign currency translation of $26.0 million.
Goodwill impairment review [Table Text Block]	'
		(In millions)				Goodwill Balance as of January 3, 2014			Reporting Unit Fair Value			Reporting Unit Carrying Value			Percent Above Carrying Value
		Infrastructure & Environment Operating Segment				$	758.9		$	2,173.00		$	1,509.30			44.00%
		Federal Services Operating Segment					707.3			1,646.00			1,011.60			62.70%
		Within the Energy & Construction Operating Segment:
			Global Management and Operations Services Group				565.4			1,398.00			925.3			51.10%
			Civil Construction & Mining Group				293.9			457			363			25.90%
			Industrial/Process Group				189.3			392			239			64.00%
			Power Group				735.1			952			823.9			15.50%
				Total Energy & Construction Operating Segment			1,783.70			3,199.00			2,351.20			36.10%
		Oil & Gas Operating Segment					445.7			1,664.00			1,366.60			21.80%
		Total				$	3,695.60		$	8,682.00		$	6,238.70			39.20%
Cost and accumulated amortization of intangible assets [Table Text Block]	'
	(In millions)						Customer Relationships, Contracts, and Backlog			Trade Name			Favorable Leases and Other			Total
	Balance as of December 30, 2011						$	491.1		$	25.6		$	5.3		$	522
		Acquisitions						163			93.5			9.8			266.3
		Amortization expense						-93.9			-4.8			-2.5			-101.2
		Other adjustments and foreign currency translation						3.3			1.7			0.1			5.1
	Balance as of December 28, 2012							563.5			116			12.7			692.2
		Amortization expense						-100.3			-5.5			-1.6			-107.4
		Other adjustments and foreign currency translation						-5.1			-4.6			-5.4			-15.1
	Balance as of January 3, 2014						$	458.1		$	105.9		$	5.7		$	569.7
	Estimated useful lives							1 - 16 years			1 - 20 years (1)			1 - 13 years
	During the fourth quarter of 2013, we revised the estimated useful life of the Flint trade name from 40 years to 20 years due to a change in our intended use.
Estimated future amortization expense of intangible assets [Table Text Block]	'
		(In millions)						Customer Relationships, Contracts, and Backlog			Trade Name			Favorable Leases and Other			Total
		2014						$	87.5		$	5.9		$	1.1		$	94.5
		2015							77			6.3			0.7			84
		2016							71.9			6.3			0.6			78.8
		2017							66.6			6.3			0.1			73
		2018							48.2			6.3			0.4			54.9
		Thereafter							106.9			74.8			2.8			184.5
								$	458.1		$	105.9		$	5.7		$	569.7

BILLINGS_IN_EXCESS_OF_COSTS_AN1

BILLINGS IN EXCESS OF COSTS AND ACCRUED EARNINGS ON CONTRACTS (TABLES)	12 Months Ended
	Jan. 03, 2014
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]	'
				January 3,		December 28,
		(In millions)		2014		2012
		Billings in excess of costs and accrued earnings on contracts		$	193.1	$	211.7
		Project-related legal liabilities and other project-related reserves			28		55.2
		Advance payments negotiated as a contract condition			6.4		9.8
		Normal profit liabilities			0.8		4.8
		Estimated losses on uncompleted contracts			4.8		7.6
			Total	$	233.1	$	289.1

INDEBTEDNESS_TABLES

INDEBTEDNESS (TABLES)	12 Months Ended
	Jan. 03, 2014
Capital leases by maturity [Abstract]	'
Maturities of capital leases [Table Text Block]	'
		(In millions)			Capital Leases
		Less than one year			$	20.6
		Second year				11.1
		Third year				9.2
		Fourth year				4.1
		Fifth year				0.1
			Total minimum lease payments			45.1
		Less: amounts representing interest				1.6
			Present value of net minimum lease payments		$	43.5
Debt disclosure [Abstract]	'
Schedule of debt [Table Text Block]	'
					January 3,			December 28,
		(In millions)			2014			2012
		Term loan, net of debt issuance costs			$	601.8		$	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)				—			203.8
		Revolving line of credit				—			100.5
		Other indebtedness				110.6			94.7
			Total indebtedness			1,711.50			2,064.30
		Less:
		Current portion of long-term debt				44.6			71.8
			Long-term debt		$	1,666.90		$	1,992.50
Maturities of long-term debt [Abstract]	'
Maturities of long-term debt [Table Text Block]	'
		(In millions)
		Less than one year			$	24.8
		Second year				12.6
		Third year				63.2
		Fourth year				456.8
		Fifth year				505.4
		Thereafter				605.2
			Total		$	1,668.00
Revolving line of credit [Abstract]	'
Line of credit facility [Table Text Block]	'
			Year Ended
			January 3,			December 28,
		(In millions, except percentages)	2014			2012
		Effective average interest rates on the revolving line of credit		2.40%			1.90%
		Average daily revolving line of credit balances	$	135.2		$	139.5
		Maximum amounts outstanding at any point during the year	$	236.4		$	420
			Year Ended
			January 3,			December 28,
		(In millions, except percentages)	2014			2012
		Effective average interest rates on the revolving line of credit		2.40%			1.90%
		Average daily revolving line of credit balances	$	135.2		$	139.5
		Maximum amounts outstanding at any point during the year	$	236.4		$	420

INCOME_TAXES_TABLES

INCOME TAXES (TABLES)	12 Months Ended
	Jan. 03, 2014
Effective income tax rate continuing operations tax rate reconciliation [Abstract]	'
Schedule of components of income tax expense [Table Text Block]	'
								Year Ended
								January 3,			December 28,		December 30,
	(In millions)							2014			2012		2011
	Current:
		Federal						$	76.1		$	152.3	$	78.3
		State and local							9.8			35.9		17.6
		Foreign							8.8			18.3		19.2
			Subtotal						94.7			206.5		115.1
	Deferred:
		Federal							70.8			-10.5		26.2
		State and local							9.7			1		5.6
		Foreign							-7.5			-7.1		-3.5
			Subtotal						73			-16.6		28.3
				Total income tax expense				$	167.7		$	189.9	$	143.4
Schedule of effective income tax rate reconciliation [Table Text Block]	'
					Year Ended
					3-Jan-14				28-Dec-12				30-Dec-11
	(In millions, except for percentages)				Amount		Tax Rate		Amount			Tax Rate	Amount		Tax Rate
	U.S. statutory rate applied to income (loss) before taxes				$	174	35.00%		$	215.5		35.00%	$	80.1	35.00%
	State taxes, net of federal benefit					13.7	2.80%			26.3		4.30%		17.7	7.70%
	Adjustments to valuation allowances					4.4	0.90%			4		0.60%		19.6	8.50%
	Foreign income taxed at rates other than 35%					-10.2	-2.10%			-24.4		-4.10%		-27.2	-11.90%
	Goodwill impairment					—	—			—		—		86.3	37.70%
	Exclusion of tax on noncontrolling interests					-19.8	-4.00%			-29.9		-4.90%		-30.1	-13.20%
	Other adjustments					5.6	1.10%			-1.6		-0.10%		-3	-1.20%
			Total income tax expense		$	167.7	33.70%		$	189.9		30.80%	$	143.4	62.60%
Schedule of deferred tax assets and liabilities [Table Text Block]	'
								Year Ended
								January 3,			December 28,		December 30,
	(In millions)							2014			2012		2011
	Deferred tax assets:
		Accrued employee benefits						$	230.7		$	237.6	$	200
		Net operating losses							129.9			132.2		108.4
		Accrued liabilities							59.7			71.9		60.6
		Insurance reserves							15.9			38.2		40.3
		Tax credits							13			15.1		10.5
		Other							20.6			23.1		19.6
			Total deferred tax assets						469.8			518.1		439.4
		Valuation allowance on deferred tax assets							-145			-137.6		-124
			Net deferred tax assets					$	324.8		$	380.5	$	315.4
	Deferred tax liabilities:
		Depreciation and amortization						$	-456.4		$	-466.1	$	-360.8
		Contract revenue and costs							-126.9			-79.9		-74.2
		Subsidiary basis difference							-150.1			-146.8		-145.5
			Total deferred tax liabilities						-733.4			-692.8		-580.5
				Deferred tax liabilities, net of deferred tax assets				$	-408.6		$	-312.3	$	-265.1
Schedule of unrecognized tax benefits reconciliation [Table Text Block]	'
								Year Ended
								January 3,			December 28,		December 30,
	(In millions)							2014			2012		2011
	Unrecognized tax benefits beginning balance							$	15.4		$	16.7	$	21.5
	Gross increase – tax positions in prior years								1.7			1.2		2.7
	Gross decrease – tax positions in prior years								-0.2			-1.2		-3.6
	Gross increase – current period tax positions								—			1.2		—
	Settlements								-1.4			-0.2		-0.2
	Lapse of statute of limitations								-1.5			-2.4		-3.7
	Unrecognized tax benefits acquired in current year								—			0.1		—
	Unrecognized tax benefits ending balance							$	14		$	15.4	$	16.7
								Year Ended
								January 3,			December 28,		December 30,
	(In millions)							2014			2012		2011
	Unrecognized tax benefits beginning balance							$	15.4		$	16.7	$	21.5
	Gross increase – tax positions in prior years								1.7			1.2		2.7
	Gross decrease – tax positions in prior years								-0.2			-1.2		-3.6
	Gross increase – current period tax positions								—			1.2		—
	Settlements								-1.4			-0.2		-0.2
	Lapse of statute of limitations								-1.5			-2.4		-3.7
	Unrecognized tax benefits acquired in current year								—			0.1		—
	Unrecognized tax benefits ending balance							$	14		$	15.4	$	16.7
Schedule of income before income tax and noncontrolling interests, domestic and foreign [Table Text Block]	'
								Year Ended
								January 3,			December 28,		December 30,
	(In millions)							2014			2012		2011
	Income before income taxes and noncontrolling interests:
		United States						$	445.2		$	534.9	$	158.3
		International							51.8			80.8		70.7
			Total income before income taxes and noncontrolling interests					$	497		$	615.7	$	229

EMPLOYEE_RETIREMENT_AND_POSTRE1

EMPLOYEE RETIREMENT AND POST-RETIREMENT BENEFIT PLANS (TABLES)	12 Months Ended
	Jan. 03, 2014
Defined benefit pension plans, defined contribution plans, and defined benefit postretirement plans disclosure [Abstract]	'
Schedule of defined benefit pension plans benefit obligations and assumptions [Table Text Block]	'
																	##SL
							Domestic Plans						Foreign Plans
							January 3,			December 28,			January 3,			December 28,
	(In millions, except percentages)						2014			2012			2014			2012
	Change in benefit obligation:
		Benefit obligation at beginning of year					$	443.4		$	383.3		$	485.9		$	447.9
		Service cost						7.5			7.5			0.5			0.6
		Interest cost						17.6			18.9			22.2			22.6
		Employee contributions						—			—			0.4			0.4
		Plan amendment						2.7			—			—			—
		Benefits paid and expenses						-21.6			-16.6			-15.4			-14.9
		Exchange rate changes						—			—			13.2			20.8
		Actuarial (gain) loss						-34.4			50.3			49.8			8.5
					Benefit obligation at end of year		$	415.2		$	443.4		$	556.6		$	485.9
	Change in plan assets:
		Fair value of plan assets at beginning of year					$	274.2		$	236.4		$	370.8		$	334.3
		Actual gain (loss) on plan assets						28.3			31.4			22.2			25.6
		Employer contributions						16			18.4			9.1			9.7
		Employer direct benefit payments						5.1			4.6			—			—
		Employee contributions						—			—			0.4			0.4
		Exchange rate changes						—			—			8.6			15.7
		Benefits paid and expenses						-21.6			-16.6			-15.4			-14.9
					Fair value of plan assets at end of year		$	302		$	274.2		$	395.7		$	370.8
	Underfunded status reconciliation:
		Underfunded status					$	113.2		$	169.2		$	160.9		$	115.1
					Net amount recognized		$	113.2		$	169.2		$	160.9		$	115.1
	Amounts recognized in our Consolidated Balance Sheets consist of:
		Accrued benefit liability included in current liabilities					$	20.9		$	5.1		$	—		$	—
		Accrued benefit liability included in other long-term liabilities						92.3			164.1			160.9			115.1
					Net amount recognized		$	113.2		$	169.2		$	160.9		$	115.1
	Amounts recognized in accumulated other comprehensive income consist of:
		Prior service income					$	0.2		$	0.6		$	—		$	—
		Net gain (loss)						-80.8			-140.5			-96.1			-41.6
					Net amount recognized		$	-80.6		$	-139.9		$	-96.1		$	-41.6
	Additional information:
		Accumulated benefit obligation					$	409.7		$	437.6		$	545.1		$	470.7
	Weighted-average assumptions used to determine benefit obligations at year end:
		Discount rate						4.97%			4.02%			4.70%			4.80%
		Rate of compensation increase						4.50%			4.50%			3.30%			2.80%
							Domestic Plans						Foreign Plans
							January 3,			December 28,			January 3,			December 28,
	(In millions, except percentages)						2014			2012			2014			2012
	Amounts recognized in accumulated other comprehensive income consist of:
		Prior service income					$	0.2		$	0.6		$	—		$	—
		Net gain (loss)						-80.8			-140.5			-96.1			-41.6
					Net amount recognized		$	-80.6		$	-139.9		$	-96.1		$	-41.6
	Additional information:
		Accumulated benefit obligation					$	409.7		$	437.6		$	545.1		$	470.7
	Weighted-average assumptions used to determine benefit obligations at year end:
		Discount rate						4.97%			4.02%			4.70%			4.80%
		Rate of compensation increase						4.50%			4.50%			3.30%			2.80%
Schedule of net periodic pension costs and other comprehensive income [Table Text Block]	'
								Years Ended
								Domestic Plans									Foreign Plans
								January 3,			December 28,			December 30,			January 3,		December 28,		December 30,
	(In millions, except percentages)							2014			2012			2011			2014		2012		2011
	Net periodic pension costs:
		Service cost						$	7.5		$	7.5		$	6.8		$	0.5	$	0.6	$	0.6
		Interest cost							17.6			18.9			19			22.2		22.6		24.4
		Expected return on plan assets							-19.2			-17.7			-16.4			-23.2		-22.2		-22.9
		Amortization or curtailment recognition of prior service cost							2.3			-3			-3.2			—		—		—
		Recognized actuarial loss							16.2			9.8			7.4			—		—		—
						Total net periodic pension costs		$	24.4		$	15.5		$	13.6		$	-0.5	$	1	$	2.1
	Other changes in plan assets and benefit obligations recognized in other comprehensive income:
		Prior service cost						$	2.7		$	—		$	-1.1		$	—	$	—	$	—
		Net loss (gain)							-43.5			36.7			27.3			50.9		5.1		48.6
		Effect of exchange rate changes on amounts included in accumulated other comprehensive income							—			—			—			3.6		1.7		-1.9
		Amortization or curtailment recognition of prior service cost							-2.3			3			3.2			—		—		—
		Amortization or settlement recognition of net loss							-16.2			-9.8			-7.4			—		—		—
						Total recognized in other comprehensive loss (income)		$	-59.3		$	29.9		$	22		$	54.5	$	6.8	$	46.7
	Total recognized in net periodic pension costs and other comprehensive loss (income)							$	-34.9		$	45.4		$	35.6		$	54	$	7.8	$	48.8
	Weighted-average assumptions used to determine net periodic cost for years ended:
		Discount rate							4.02%			5.05%			5.55%			4.80%		5.00%		5.70%
		Rate of compensation increase							4.50%			4.50%			4.50%			2.80%		3.00%		3.45%
		Expected long-term rate of return on plan assets							7.35%			7.34%			7.44%			7.00%		7.00%		6.96%
		Measurement dates							12/28/12			12/30/11			12/31/10			12/28/12		12/30/11		12/31/10
Defined benefit pension plans target asset allocation [Table Text Block]	'
								Current Target Asset Allocation
								Domestic Plans			Foreign Plans
		Equity securities							45%			30%
		Debt securities							55%			36%
		Real estate							—			6%
		Hedge fund							—			25%
		Other							—			3%
						Total			100%			100%
Defined benefit pension plans estimated future benefit payments [Table Text Block]	'
		For the Fiscal Year:						Estimated Future Benefit Payments
		(In millions)						Domestic Plans			Foreign Plans
		2014						$	38		$	17
		2015							23			17
		2016							23			18
		2017							24			18
		2018							25			19
		Next five fiscal years thereafter							130			103
						Total		$	263		$	192
Schedule of fair values of defined benefit pension plans and post-retirement benefit plan assets [Table Text Block]	'
				Total			Fair Value Measurement as of January 3, 2014
				Carrying									Significant
				Value as of			Quoted Prices in			Significant Other			Unobservable
				January 3,			Active Markets			Observable Inputs			Inputs
	(In millions)			2014			(Level 1)			(Level 2)			(Level 3)
	Cash and cash equivalents			$	15.7		$	5.1		$	10.6		$	—
	U.S. equity funds				78.1			—			78.1			—
	International equity funds				95.6			—			95.6			—
	Global equity funds				82.4			—			82.4			—
	Fixed income securities				304.4			—			294.5			9.9
	International property funds				121.5			—			42.7			78.8
		Total		$	697.7		$	5.1		$	603.9		$	88.7
				Total			Fair Value Measurement as of December 28, 2012
				Carrying									Significant
				Value as of			Quoted Prices in			Significant Other			Unobservable
				December 28,			Active Markets			Observable Inputs			Inputs
	(In millions)			2012			(Level 1)			(Level 2)			(Level 3)
	Cash and cash equivalents			$	21		$	8		$	13		$	—
	U.S. equity funds				74.4			—			74.4			—
	International equity funds				94.6			—			94.6			—
	Global equity funds				72.2			—			72.2			—
	Fixed income securities				264.9			—			264.9			—
	International property funds				117.9			—			43.8			74.1
		Total		$	645		$	8		$	562.9		$	74.1
Schedule of effect of significant unobservable inputs, changes in plan assets [Table Text Block]	'
		(In millions)			Level 3 Fair Value Measurement Rollforward
		Balance as of December 30, 2011			$	47.9
			Unrealized gains (losses)			4.4
			Purchases, sales, issuances and settlements, net			21.8
		Balance as of December 28, 2012			$	74.1
			Realized gains (losses)			0.1
			Unrealized gains (losses)			6.3
			Purchases, sales, issuances and settlements, net			8.2
		Balance as of January 3, 2014			$	88.7
Schedule of post-retirement benefit plans disclosures [Table Text Block]	'
							January 3,			December 28,
							2014			2012
	Assumed blended health care cost trend rates at year-end:
		Health care cost trend rate assumed for next year						7.92%			7.94%
		Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)						4.94%			4.94%
		Years that the rates reach the ultimate trend rate						2020/2024			2020/2024

STOCKHOLDERS_EQUITY_TABLES

STOCKHOLDERS' EQUITY (TABLES)	12 Months Ended
	Jan. 03, 2014
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		$	16		10-Jan-14
	28-Feb-14		$	0.22		21-Mar-14			$	NA		11-Apr-14
	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		$	16		10-Jan-14
	28-Feb-14		$	0.22		21-Mar-14			$	NA		11-Apr-14
	NA =ot available
Schedule of share-based compensation restricted stock units and awards grant date fair value assumptions [Table Text Block]	'
				Fiscal year ended
				3-Jan-14
		Stock price (1)		$	47
		Expected volatility factor (2)			31.30%
		Risk-free interest rate (3)			0.33%
		Expected annual dividend yield (4)			0%
	The stock price is the closing price of our common stock on the date of when all of the key terms and conditions related to the award are known.
	The stock volatility for each grant was determined based on the historical volatility for the Russell 3000 Index and in correlation to our common stock for a period equal to the estimated performance period.
	The risk-free interest rate for periods equal to the performance period is based on the U.S. Treasury yield curve in effect at the date of grant.
	Dividends are reinvested for purposes of calculating total stockholder return. For purposes of the fair value model, the dividend yield is therefore considered to be 0%.
Schedule of share-based compensation, restricted stock fair values [Table Text Block]	'
				January 3,			December 28,
		(In millions)		2014			2012
		Fair value of shares vested		$	43.9		$	42
		Grant date fair value of restricted stock awards and units granted		$	69.2		$	54.3
Status of and changes in nonvested restricted stock awards and units [Table Text Block]	'
					Year Ended
					3-Jan-14
								Weighted-
					Shares			Average Grant
					(in millions)			Date Fair Value
		Nonvested at December 31, 2010			2.5			$	42.92
			Granted		1			$	42.39
			Vested		-1			$	42.47
			Forfeited		-0.1			$	43.46
		Nonvested at December 31, 2011			2.4			$	42.86
			Granted		1.4			$	36.79
			Vested		-1			$	41.69
			Forfeited		-0.1			$	42.44
		Nonvested at December 28, 2012			2.7			$	40.03
			Granted		1.4			$	48.66
			Vested		-1			$	41.45
			Forfeited		-0.3			$	41.9
		Nonvested at January 3, 2014			2.8			$	43.66
Stock-based compensation expenses [Table Text Block]	'
								Year Ended
								January 3,			December 28,		December 30,
		(In millions)						2014			2012		2011
		Stock-based compensation expense:
				Restricted stock awards and units				$	31.2		$	43.1	$	44.8
				Employee stock purchase plan					0.6			0.5		0.5
						Stock-based compensation expense		$	31.8		$	43.6	$	45.3
		Stock-based compensation expense included in:
				Cost of revenues				$	23.5		$	33.2	$	35.1
				General and administrative expenses					8.3			10.4		10.2
						Stock-based compensation expense		$	31.8		$	43.6	$	45.3
		Total income tax benefits recognized in our net income related to stock-based compensation expense						$	11.6		$	16	$	17.3
Schedule of treasury stock by class [Table Text Block]	'
				Year Ended
				January 3,			December 28,			December 30,
		(In millions, except average price paid per share)		2014			2012			2011
		Shares of common stock repurchased			2			1			6
		Average price paid per share		$	45.55		$	40		$	40.47
		Cost of common stock repurchased		$	93.3		$	40		$	242.8

SEGMENT_AND_RELATED_INFORMATIO1

SEGMENT AND RELATED INFORMATION (TABLES)	12 Months Ended
	Jan. 03, 2014
Segment reporting [Abstract]	'
Segment reporting, disclosure of entity's reportable segments [Table Text Block]	'
					Year Ended
					January 3,			December 28,			December 30,
	(In millions)				2014			2012			2011
	Revenues
	Infrastructure & Environment				$	3,634.10		$	3,714.40		$	3,761.00
	Federal Services (1)					3,157.20			3,774.90			4,013.90
	Energy & Construction (2)					2,417.80			2,412.90			1,932.50
	Oil & Gas (2)					1,941.80			1,233.10			—
	Inter-segment, eliminations and other					-160.2			-162.8			-162.4
			Total revenues		$	10,990.70		$	10,972.50		$	9,545.00
	Equity in income (loss) of unconsolidated joint ventures
	Infrastructure & Environment				$	2.4		$	4		$	3.9
	Federal Services (1)					84.9			83.4			114.7
	Energy & Construction (2)					8.1			16			13.6
	Oil & Gas (2)					-1.8			4.2			—
			Total equity in income of unconsolidated joint ventures		$	93.6		$	107.6		$	132.2
	URS operating income (loss) (3)
	Infrastructure & Environment				$	209		$	213.4		$	222
	Federal Services (1)					307.8			300.9			276.8
	Energy & Construction (2)					52.4			96.7			54.6
	Oil & Gas (2)					17			59.4			—
	Corporate (4)					-77.5			-99.7			-79.5
			Total URS operating income		$	508.7		$	570.7		$	473.9
	Operating income (loss) (5)
	Infrastructure & Environment				$	210.7		$	215.5		$	222
	Federal Services (1,5)					370.3			378.9			25.5
	Energy & Construction (2)					71.3			132.8			83.1
	Oil & Gas (2)					16			58.4			—
	Corporate (4)					-77.5			-99.7			-79.5
			Total operating income		$	590.8		$	685.9		$	251.1
	Capital expenditures
	Infrastructure & Environment				$	36.9		$	42.5		$	51.2
	Federal Services (1)					13			5.9			5.8
	Energy & Construction (2)					16.8			18.4			13.8
	Oil & Gas (2)					57.1			73.2			—
	Corporate					12.6			13.2			10.9
			Total capital expenditures		$	136.4		$	153.2		$	81.7
	Depreciation and amortization
	Infrastructure & Environment				$	50		$	56		$	55
	Federal Services (1)					47.8			45.3			36.3
	Energy & Construction (2)					40.7			49.2			45.1
	Oil & Gas (2)					116.9			76.5			—
	Corporate					8.8			6.6			6.3
			Total depreciation and amortization		$	264.2		$	233.6		$	142.7
	The operating results of Apptis have been included in our consolidated results since the acquisition on June 1, 2011.
	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.
	Corporate includes expenses related to corporate functions and acquisition-related expenses.
	The operating income for the year ended December 30, 2011 included a $351.3 million goodwill impairment charge. See Note 9, “Goodwill and Intangible Assets,” for more information.
Reconciliation of other significant reconciling items from segments to consolidated [Table Text Block]	'
					Year Ended January 3, 2014
					Infrastructure						Energy			Oil
					&			Federal			&			&
	(In millions)				Environment			Services			Construction			Gas		Corporate		Consolidated
	URS operating income				$	209		$	307.8		$	52.4		$	17	$	-77.5	$	508.7
	Noncontrolling interests					1.7			62.5			18.9			-1		—		82.1
				Operating income (loss)	$	210.7		$	370.3		$	71.3		$	16	$	-77.5	$	590.8
					Year Ended December 28, 2012
					Infrastructure						Energy			Oil
					&			Federal			&			&
	(In millions)				Environment			Services			Construction			Gas		Corporate		Consolidated
	URS operating income				$	213.4		$	300.9		$	96.7		$	59.4	$	-99.7	$	570.7
	Noncontrolling interests					2.1			78			36.1			-1		—		115.2
				Operating income (loss)	$	215.5		$	378.9		$	132.8		$	58.4	$	-99.7	$	685.9
					Year Ended December 30, 2011
					Infrastructure						Energy			Oil
					&			Federal			&			&
	(In millions)				Environment			Services			Construction			Gas		Corporate		Consolidated
	URS operating income				$	222		$	276.8		$	54.6		$	—	$	-79.5	$	473.9
	Noncontrolling interests					—			100			28.5			—		—		128.5
	Goodwill impairment					—			-351.3			—			—		—		-351.3
				Operating income (loss)	$	222		$	25.5		$	83.1		$	—	$	-79.5	$	251.1
Schedule of investments in and advances to unconsolidated joint ventures and property and equipment, net of accumulated depreciation by segment [Table Text Block]	'
						January 3,			December 28,
		(In millions)				2014			2012
		Infrastructure & Environment				$	8		$	8.2
		Federal Services					95.4			111
		Energy & Construction					21.3			19.1
		Oil & Gas					120.9			140
				Total investments in and advances to unconsolidated joint ventures		$	245.6		$	278.3
		Infrastructure & Environment				$	135.9		$	138.7
		Federal Services					38.8			41.6
		Energy & Construction					52.7			55.4
		Oil & Gas					351.6			424.9
		Corporate					29.1			26.9
				Total property and equipment, net of accumulated depreciation		$	608.1		$	687.5
Reconciliation of assets from segment to consolidated [Table Text Block]	'
					January 3,			December 28,
		(In millions)			2014			2012
		Infrastructure & Environment			$	2,119.50		$	2,222.10
		Federal Services				2,727.60			2,911.60
		Energy & Construction				2,117.60			2,195.90
		Oil & Gas				1,495.60			1,739.30
		Corporate				257.7			192.1
				Total assets	$	8,718.00		$	9,261.00
Schedule of revenues from external customers, by geographical areas [Table Text Block]	'
					Years Ended
					January 3,			December 28,			December 30,
		(In millions)			2014			2012			2011
		Revenues
				United States	$	8,136.70		$	8,640.20		$	8,329.70
				Canada (1)		1,879.50			1,304.00			180.3
				Other countries		1,001.80			1,056.00			1,065.30
				Eliminations		-27.3			-27.7			-30.3
		Total revenues			$	10,990.70		$	10,972.50		$	9,545.00
	Revenues from Canada exceeded 10% of our consolidated revenues for the years ended January 3, 2014 and December 28, 2012 due to our acquisition of Flint in fiscal year 2012.
Schedule of net property and equipment from external customers by geographical areas [Table Text Block]	'
									January 3,			December 28,
		(In millions)							2014			2012
		Property and equipment, net (1)
				United States					$	313.6		$	320.4
				International:
					Canada					249.9			313.2
					Other countries					44.6			53.9
							Total international			294.5			367.1
		Total property and equipment, net							$	608.1		$	687.5
	Property and equipment, net is categorized by the location of incorporation of the legal entities.
Revenues from major customers [Table Text Block]	'
					Year Ended
					January 3,			December 28,			December 30,
		(In millions, except percentages)			2014			2012			2011
		The U.S. Army (1)
				Infrastructure & Environment	$	125.2		$	128.4		$	141.7
				Federal Services		1,100.30			1,497.80			1,352.40
				Energy & Construction		149.5			128.8			198.2
		Total U.S. Army			$	1,375.00		$	1,755.00		$	1,692.30
		Revenues from the U.S. Army as a percentage of our consolidated revenues				13%			16%			18%
		DOE
				Infrastructure & Environment	$	4.7		$	5.6		$	5.9
				Federal Services		821.9			984			1,260.50
				Energy & Construction		4.6			0.1			2.6
		Total DOE			$	831.2		$	989.7		$	1,269.00
		Revenues from DOE as a percentage of our consolidated revenues				8%			9%			13%
		Revenues from the federal market sector as a percentage of our consolidated revenues				34%			40%			49%
					Year Ended
					January 3,			December 28,			December 30,
		(In millions, except percentages)			2014			2012			2011
		The U.S. Army (1)
				Infrastructure & Environment	$	125.2		$	128.4		$	141.7
				Federal Services		1,100.30			1,497.80			1,352.40
				Energy & Construction		149.5			128.8			198.2
		Total U.S. Army			$	1,375.00		$	1,755.00		$	1,692.30
		Revenues from the U.S. Army as a percentage of our consolidated revenues				13%			16%			18%
		DOE
				Infrastructure & Environment	$	4.7		$	5.6		$	5.9
				Federal Services		821.9			984			1,260.50
				Energy & Construction		4.6			0.1			2.6
		Total DOE			$	831.2		$	989.7		$	1,269.00
		Revenues from DOE as a percentage of our consolidated revenues				8%			9%			13%
		Revenues from the federal market sector as a percentage of our consolidated revenues				34%			40%			49%
	The U.S. Army includes U.S. Army Corps of Engineers.

COMMITMENTS_AND_CONTINGENCIES_

COMMITMENTS AND CONTINGENCIES (TABLES)	12 Months Ended
	Jan. 03, 2014
Lease Obligations [Abstract]	'
Obligations under non-cancelable operating lease agreements [Table Text Block]	'
		(In millions)		Operating Leases
		2014		$	187.1
		2015			153.7
		2016			123.2
		2017			92.1
		2018			70.7
		Thereafter			115.3
			Total minimum lease payments	$	742.1

OTHER_COMPREHENSIVE_INCOME_LOS1

OTHER COMPREHENSIVE INCOME (LOSS) AND ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (TABLES)	12 Months Ended
	Jan. 03, 2014
Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Income (Loss) [Abstract]	'
Other comprehensive income (loss) and accumulated other comprehensive income (loss) [Table Text Block]	'
	(In millions)			Pension and Post-retirement Related Adjustments (1)		Foreign Currency Translation Adjustments		Loss on Derivative Instruments		Accumulated Other Comprehensive Income (Loss)
	Balances at December 31, 2010			$	-46.1	$	9.2	$	—	$	-36.9
		Amounts reclassified from accumulated other comprehensive income:
			Prior service costs (2)		-3.2		—		—		-3.2
			Actuarial gains (losses) (2)		7.3		—		—		7.3
		Total pre-tax amounts reclassified from accumulated other comprehensive income			4.1		—		—		4.1
		Tax benefit (expense) (3)			10.7		—		—		10.7
		Other comprehensive income before reclassification			-77.5		-11.2		—		-88.7
		Net current-period other comprehensive income			-62.7		-11.2		—		-73.9
	Balances at December 30, 2011			$	-108.8	$	-2	$	—	$	-110.8
	For fiscal year 2011, pension and post-retirement-related adjustments, before-tax, in other comprehensive income included $80.9 million of net loss arising during the year, $4.1 million of amortization of prior service cost and net loss, and $1.9 million of before-tax effect of changes in foreign currency exchange rates.
	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 Consolidated Statements of Operations. See Note 14, “Employee Retirement and Post-Retirement Benefit Plans,” for more information.
	The tax benefit has been reduced by a valuation allowance of $11.6 million in 2011.
	(In millions)			Pension and Post-retirement Related Adjustments (1)		Foreign Currency Translation Adjustments		Loss on Derivative Instruments		Accumulated Other Comprehensive Income (Loss)
	Balances at December 30, 2011			$	-108.8	$	-2	$	—	$	-110.8
		Amounts reclassified from accumulated other comprehensive income:
			Prior service costs (2)		-3		—		—		-3
			Actuarial (gains) losses (2)		10.4		—		—		10.4
			Reclassification adjustment of prior derivative settlement		—		—		0.1		0.1
			Translation adjustment realized upon liquidation of foreign subsidiaries (3)		—		-0.1		—		-0.1
		Total pre-tax amounts reclassified from accumulated other comprehensive income			7.4		-0.1		0.1		7.4
		Tax benefit (expense) (4)			13.3		—		0.4		13.7
		Other comprehensive income before reclassification			-47.3		24.9		-1.1		-23.5
		Net current-period other comprehensive income			-26.6		24.8		-0.6		-2.4
	Balances at December 28, 2012			$	-135.4	$	22.8	$	-0.6	$	-113.2
	For fiscal year 2012, pension and post-retirement-related adjustments, before-tax, in other comprehensive income included $45.6 million of net loss arising during the year, $7.4 million of amortization of prior service cost and net loss, and $1.7 million of before-tax effect of changes in foreign currency exchange rates.
	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 Consolidated Statements of Operations. See Note 14, “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.
	The tax benefit has been reduced by a valuation allowance of $4.9 million in 2012.
	(In millions)			Pension and Post-retirement Related Adjustments (1)		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
		Amounts reclassified from accumulated other comprehensive income:
			Prior service costs (2)		2.3		—		—		2.3
			Actuarial (gains) losses (2)		16.7		—		—		16.7
			Reclassification adjustment of prior derivative settlement		—		—		0.1		0.1
			Translation adjustment realized upon liquidation of foreign subsidiaries (3)		—		1.9		—		1.9
		Total pre-tax amounts reclassified from accumulated other comprehensive income			19		1.9		0.1		21
		Tax benefit (expense) (4)			-24.5		-0.2		—		-24.7
		Other comprehensive income before reclassification			-11.5		-71.9		—		-83.4
		Net current-period other comprehensive income			-17		-70.2		0.1		-87.1
	Balances at January 3, 2014			$	-152.4	$	-47.4	$	-0.5	$	-200.3
	For fiscal year 2013, pension and post-retirement-related adjustments, before-tax, in other comprehensive income included $5.5 million of net loss arising during the year, $19.0 million of amortization of prior service cost and net loss, and $3.6 million of before-tax effect of changes in foreign currency exchange rates.
	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 Consolidated Statements of Operations. See Note 14, “Employee Retirement and Post-Retirement Benefit Plans,” for more information.
	This accumulated other comprehensive income component is reclassified into “Cost of revenues” in our Consolidated Statements of Operations.
	The tax benefit has been reduced by a valuation allowance of $17.9 million in 2013.

RECEIVABLE_AND_DEFERRED_INCOME1

RECEIVABLE AND DEFERRED INCOME TAX VALUATION ALLOWANCES (TABLES)	12 Months Ended
	Jan. 03, 2014
Summary of receivable and deferred income tax valuation allowances [Abstract]	'
Summary of receivable and deferred income tax valuation allowances [Table Text Block]	'
	(In millions)	Balance at the Beginning of the Period		Additions (Charged to Bad Debt Expense)		Additions (Charged to Other Accounts) (1)		Deductions (2)		Other (3)		Balance at the End of the Period
	Year ended January 3, 2014
	Receivable allowances	$	69.7	$	7.4	$	7.7	$	-19.7	$	—	$	65.1
	Deferred income tax valuation allowance	$	137.6	$	—	$	12.7	$	-23.2	$	17.9	$	145
	Year ended December 28, 2012
	Receivable allowances	$	43.1	$	6.6	$	27.4	$	-7.4	$	—	$	69.7
	Deferred income tax valuation allowance	$	124	$	—	$	12.3	$	-14.7	$	16	$	137.6
	Year ended December 30, 2011
	Receivable allowances	$	42.8	$	2.8	$	16.1	$	-18.6	$	—	$	43.1
	Deferred income tax valuation allowance	$	104.2	$	—	$	23.5	$	-15.3	$	11.6	$	124
	These additions were primarily charged to revenues or income tax expense.
	Deductions to the deferred income tax valuation allowance were primarily attributed to foreign and state NOL expirations, change in tax rates and the use of federal and state NOLs.
	Other adjustments to the deferred income tax valuation allowance during the year ended December 28, 2012 were attributable to acquired deferred taxes through the Flint acquisition and items charged to other comprehensive income. For the years ended January 3, 2014 and December 30, 2011, other adjustments to the deferred income tax valuation allowance were charged to other comprehensive income.

SELECTED_QUARTERLY_FINANCIAL_D1

SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (TABLES)	12 Months Ended
	Jan. 03, 2014
Selected Quarterly Financial Data [Abstract]	'
Selected Quarterly Financial Data [Table Text Block]	'
			2013 Quarters Ended
	(In millions, except per share data)		29-Mar		28-Jun		27-Sep		3-Jan
	Revenues		$	2,802.50	$	2,792.00	$	2,735.50	$	2,660.70
	Cost of revenues			-2,651.30		-2,641.60		-2,559.00		-2,564.10
	Operating income			152.6		145.4		179.3		113.5
	Other income (expense) (1)			-2.5		-3.3		1.6		-3.5
	Income tax expense (2)			-42.2		-38.9		-42.3		-44.3
	Net income including noncontrolling interests			86.8		81.7		115.4		45.4
	Noncontrolling interests in income of consolidated subsidiaries			-14.9		-14.4		-26.6		-26.2
	Net income attributable to URS			71.9		67.3		88.8		19.2
	Earnings per share:
		Basic	$	0.97	$	0.91	$	1.21	$	0.26
		Diluted	$	0.96	$	0.91	$	1.2	$	0.26
	Weighted-average shares outstanding:
		Basic		74.4		73.8		73.6		73.6
		Diluted		74.9		74		73.9		74.2
			2012 Quarters Ended
	(In millions, except per share data)		30-Mar		29-Jun		28-Sep		28-Dec
	Revenues		$	2,361.50	$	2,690.70	$	2,947.60	$	2,972.70
	Cost of revenues			-2,203.20		-2,527.50		-2,753.30		-2,810.50
	Acquisition-related expenses (3)			-5.6		-11.3		0.8		—
	Operating income			161.4		149.5		203.6		171.4
	Other income (expense) (1)			2.5		-9.2		10.8		-3.6
	Income tax expense			-48.6		-40.5		-66.1		-34.7
	Net income including noncontrolling interests			105.5		79.1		127.8		113.4
	Noncontrolling interests in income of consolidated subsidiaries			-25.8		-25.5		-21.1		-42.8
	Net income attributable to URS			79.7		53.6		106.7		70.6
	Earnings per share:
		Basic	$	1.08	$	0.72	$	1.43	$	0.95
		Diluted	$	1.07	$	0.72	$	1.43	$	0.95
	Weighted-average shares outstanding:
		Basic		74		74.2		74.5		74.5
		Diluted		74.3		74.6		74.6		74.6
	During fiscal 2013, “Other income (expenses)” represents foreign currency gains (losses) recognized on intercompany financing arrangements. During fiscal 2012, “Other income (expenses)” represents foreign currency gains (losses) recognized on intercompany financing arrangements and foreign currency forward contracts. See further discussion in Note 11, “Indebtedness.”
	During the fourth quarter of 2013, we recorded income tax expense of $10.0 million related to prior quarters. This included U.S. tax on the sale of Canadian properties of $6.4 million and dividends from a Canadian joint venture of $3.6 million. This amount recorded in the fourth quarter was not material to prior quarters and, accordingly, the prior quarters have not been revised. On an after-tax basis, these items resulted in decreases to net income and diluted EPS of $10.0 million and $0.15, respectively.
	For the year ended December 28, 2012, we recorded acquisition-related expenses in connection with our acquisition of Flint. See further discussion in Note 8, “Acquisitions.”

BUSINESS_BASIS_OF_PRESENTATION2

BUSINESS, BASIS OF PRESENTATION, AND ACCOUNTING POLICIES (DETAILS) (USD $)

3 Months Ended

12 Months Ended

In Millions, except Per Share data, unless otherwise specified

Jan. 03, 2014

Sep. 27, 2013

Jun. 28, 2013

Mar. 29, 2013

Dec. 28, 2012

Sep. 28, 2012

Jun. 29, 2012

Mar. 30, 2012

Jan. 03, 2014

Dec. 28, 2012

Dec. 30, 2011

Dec. 31, 2010

countries

segments

employees

countries

employees

Cash and cash equivalents (Textuals) [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Restricted cash and cash equivalents

$12.80

'

'

'

$17.10

'

'

'

$12.80

$17.10

'

'

Change in accounting estimate [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Revenues

2,660.70

2,735.50

2,792

2,802.50

2,972.70

2,947.60

2,690.70

2,361.50

10,990.70

10,972.50

9,545

'

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

3,695.60

'

'

'

3,721.60

'

'

'

3,695.60

3,721.60

3,247.50

[1]

'

Total assets

8,718

'

'

'

9,261

'

'

'

8,718

9,261

'

'

Deferred tax liabilities

444.2

'

'

'

379.9

'

'

'

444.2

379.9

'

'

Total liabilities

4,491

'

'

'

5,075.10

'

'

'

4,491

5,075.10

'

'

Retained earnings

1,830.70

'

'

'

1,647.30

'

'

'

1,830.70

1,647.30

'

'

Total URS stockholders' equity

4,081.20

'

'

'

4,044

'

'

'

4,081.20

4,044

'

'

Total stockholders' equity

4,227

'

'

'

4,185.90

'

'

'

4,227

4,185.90

3,907.30

4,201

Total liabilities and stockholders' equity

8,718

'

'

'

9,261

'

'

'

8,718

9,261

'

'

Consolidated Statements of Operations Data [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill impairment

'

'

'

'

'

'

'

'

'

'

-351.3

'

Operating income (loss)

113.5

179.3

145.4

152.6

171.4

203.6

149.5

161.4

590.8

685.9

251.1

'

Income (loss) before income taxes

'

'

'

'

'

'

'

'

497

615.7

229

'

Income tax benefit (expense)

-44.3

[2]

-42.3

[2]

-38.9

[2]

-42.2

[2]

-34.7

-66.1

-40.5

-48.6

-167.7

-189.9

-143.4

'

Net income (loss) including noncontrolling interests

45.4

115.4

81.7

86.8

113.4

127.8

79.1

105.5

329.3

425.8

85.6

'

Noncontrolling interests in income of consolidated subsidiaries

-26.2

-26.6

-14.4

-14.9

-42.8

-21.1

-25.5

-25.8

-82.1

-115.2

-128.5

'

Net income (loss) attributable to URS

19.2

88.8

67.3

71.9

70.6

106.7

53.6

79.7

247.2

310.6

-42.9

'

Effective income tax rate %

'

'

'

'

'

'

'

'

33.70%

30.80%

62.60%

'

Basic earnings (loss) per share

$0.26

$1.21

$0.91

$0.97

$0.95

$1.43

$0.72

$1.08

$3.35

$4.18

($0.56)

'

Diluted earnings (loss) per share

$0.26

$1.20

$0.91

$0.96

$0.95

$1.43

$0.72

$1.07

$3.31

$4.17

($0.56)

'

Consolidated Statements of Comprehensive Income Data [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Net income (loss) including noncontrolling interests

45.4

115.4

81.7

86.8

113.4

127.8

79.1

105.5

329.3

425.8

85.6

'

Comprehensive income (loss)

'

'

'

'

'

'

'

'

242.2

423.4

11.7

'

Comprehensive income (loss) attributable to URS

'

'

'

'

'

'

'

'

160.1

308.2

-116.8

'

Consolidated Statements of Changes in Stockholders Equity Data [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Ending Balances

4,227

'

'

'

4,185.90

'

'

'

4,227

4,185.90

3,907.30

4,201

Consolidated Statements of Cash Flows Data [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Net income (loss) including noncontrolling interests

45.4

115.4

81.7

86.8

113.4

127.8

79.1

105.5

329.3

425.8

85.6

'

Goodwill impairment

'

'

'

'

'

'

'

'

'

'

351.3

'

Deferred income taxes

'

'

'

'

'

'

'

'

73

-16.6

28.3

'

Accounts payable, accrued salaries and employee benefits, and other current liabilities

'

'

'

'

'

'

'

'

-219.5

-13.7

-40.5

'

Other long-term liabilities

'

'

'

'

'

'

'

'

7.1

-10.6

13

'

Segment reporting disclosure of entities reportable segments [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Operating income (loss)

113.5

179.3

145.4

152.6

171.4

203.6

149.5

161.4

590.8

685.9

251.1

'

Goodwill impairment loss after tax

'

'

'

'

'

'

'

'

'

'

309.4

'

Civil Construction and Mining Group [Member]

'

'

'

'

'

'

'

'

'

'

'

'

Consolidated Balance Sheet Data [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill

293.9

'

'

'

293.9

'

'

'

293.9

293.9

293.9

[1]

'

Industrial/Process Group [Member]

'

'

'

'

'

'

'

'

'

'

'

'

Consolidated Balance Sheet Data [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill

249.7

'

'

'

252.9

'

'

'

249.7

252.9

189.3

[1]

'

Power Group [Member]

'

'

'

'

'

'

'

'

'

'

'

'

Consolidated Balance Sheet Data [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill

735.1

'

'

'

735.1

'

'

'

735.1

735.1

735.1

[1]

'

Retained Earnings

'

'

'

'

'

'

'

'

'

'

'

'

Consolidated Balance Sheet Data [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Total stockholders' equity

1,830.70

'

'

'

1,647.30

'

'

'

1,830.70

1,647.30

1,398.10

1,441

Consolidated Statements of Operations Data [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Net income (loss) including noncontrolling interests

'

'

'

'

'

'

'

'

247.2

310.6

-42.9

'

Consolidated Statements of Comprehensive Income Data [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Net income (loss) including noncontrolling interests

'

'

'

'

'

'

'

'

247.2

310.6

-42.9

'

Consolidated Statements of Changes in Stockholders Equity Data [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Ending Balances

1,830.70

'

'

'

1,647.30

'

'

'

1,830.70

1,647.30

1,398.10

1,441

Consolidated Statements of Cash Flows Data [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Net income (loss) including noncontrolling interests

'

'

'

'

'

'

'

'

247.2

310.6

-42.9

'

Total URS Stockholders' Equity

'

'

'

'

'

'

'

'

'

'

'

'

Consolidated Balance Sheet Data [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Total stockholders' equity

4,081.20

'

'

'

4,044

'

'

'

4,081.20

4,044

3,800.10

4,117.20

Consolidated Statements of Operations Data [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Net income (loss) including noncontrolling interests

'

'

'

'

'

'

'

'

247.2

310.6

-42.9

'

Consolidated Statements of Comprehensive Income Data [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Net income (loss) including noncontrolling interests

'

'

'

'

'

'

'

'

247.2

310.6

-42.9

'

Consolidated Statements of Changes in Stockholders Equity Data [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Ending Balances

4,081.20

'

'

'

4,044

'

'

'

4,081.20

4,044

3,800.10

4,117.20

Consolidated Statements of Cash Flows Data [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Net income (loss) including noncontrolling interests

'

'

'

'

'

'

'

'

247.2

310.6

-42.9

'

Performance-based Incentive Fees [Member]

'

'

'

'

'

'

'

'

'

'

'

'

Change in accounting estimate [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

31.1

'

24.8

'

Impact on operating income

'

'

'

'

'

'

'

'

31.1

'

24.8

'

Impact on net income

'

'

'

'

'

'

'

'

18.7

'

14.9

'

Impact on EPS

'

'

'

'

'

'

'

'

$0.25

'

$0.19

'

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

'

'

[1]

Balances as of December 30, 2011 reflect the realignment of our business as further described in Note 16, bSegment and Related Information.b Of the goodwill, $565.4 million related to our Global Management and Operations Services Group was transferred from the Energy & Construction Division to the Federal Services Division.

[2]

During the fourth quarter of 2013, we recorded income tax expense of $10.0 million related to prior quarters. This included U.S. tax on the sale of Canadian properties of $6.4 million and dividends from a Canadian joint venture of $3.6 million. This amount recorded in the fourth quarter was not material to prior quarters and, accordingly, the prior quarters have not been revised. On an after-tax basis, these items resulted in decreases to net income and diluted EPS of $10.0 million and $0.15, respectively.

EARNINGS_PER_SHARE_DETAILS

EARNINGS PER SHARE (DETAILS) (USD $)

3 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Jan. 03, 2014

Sep. 27, 2013

Jun. 28, 2013

Mar. 29, 2013

Dec. 28, 2012

Sep. 28, 2012

Jun. 29, 2012

Mar. 30, 2012

Jan. 03, 2014

Dec. 28, 2012

Dec. 30, 2011

Goodwill [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Goodwill impairment

'

'

'

'

'

'

'

'

'

'

$351.30

Weighted-average shares of common stock outstanding:

'

'

'

'

'

'

'

'

'

'

'

Weighted-average shares of common stock outstanding

73.6

[1]

73.6

73.8

74.4

74.5

74.5

[1]

74.2

74

73.9

[1],[2]

74.3

[2]

77.3

[2]

Effect of dilutive stock options, restricted stock awards and units and employee stock purchase plan shares

'

'

'

'

'

'

'

'

0.8

0.2

'

Weighted-average shares of common stock outstanding - Diluted

74.2

73.9

74

74.9

74.6

74.6

74.6

74.3

74.7

74.5

77.3

Anti-dilutive equity awards not included in components of weighted-average shares of common stock outstanding

'

'

'

'

'

'

'

'

0

[3]

1.1

1

[1]

Weighted-average shares of common stock outstanding is net of treasury stock and excludes nonvested restricted stock awards. No dilution was applied to our basic weighted-average shares outstanding for the year ended December 30, 2011, due to a goodwill impairment charge that resulted in a net loss for the year.

[2]

Weighted-average shares of common stock outstanding is net of treasury stock and excludes nonvested restricted stock awards.

[3]

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 $)	12 Months Ended
In Millions, unless otherwise specified	Jan. 03, 2014	Dec. 28, 2012
Accounts receivable and costs and accrued earnings in excess of billings on contracts (Textuals) [Abstract]	'	'
Accounts receivable	$81.50	$32.60
Performance-based incentive fees payable	190.4	51.6
Schedule of accounts receivable and costs and accrued earnings in excess of billings on contracts [Line Items]	'	'
Total accounts receivable	1,392.60	1,554.80
Unbilled Accounts Receivable	1,652.60	1,649.20
Less: Amounts included in Other long-term assets	-131.1	-264.9
Costs and accrued earnings in excess of billings on contracts	1,521.50	1,384.30
Schedule of Unbilled Accounts Receivable [Line Items]	'	'
Balances	1,652.60	1,649.20
Amounts included in "Other long-term assets" [Member]	'	'
Schedule of accounts receivable and costs and accrued earnings in excess of billings on contracts [Line Items]	'	'
Unbilled Accounts Receivable	131.1	264.9
Schedule of Unbilled Accounts Receivable [Line Items]	'	'
Balances	264.9	185
Additions	241.7	209.2
Reclassification from long-term to short-term	-375.5	-129.3
Balances	131.1	264.9
Amounts included in "Other long-term liabilities" [Member]	'	'
Schedule of accounts receivable and costs and accrued earnings in excess of billings on contracts [Line Items]	'	'
Unbilled Accounts Receivable	2.2	107
Schedule of Unbilled Accounts Receivable [Line Items]	'	'
Balances	107	105.6
Additions	59.7	38.9
Reclassification from long-term to short-term	-164.5	-37.5
Balances	2.2	107
US Federal Government [Member]	'	'
Schedule of accounts receivable and costs and accrued earnings in excess of billings on contracts [Line Items]	'	'
Total accounts receivable	353.2	376.2
Unbilled Accounts Receivable	855.7	892.7
Schedule of Unbilled Accounts Receivable [Line Items]	'	'
Balances	855.7	892.7
Others [Member]	'	'
Schedule of accounts receivable and costs and accrued earnings in excess of billings on contracts [Line Items]	'	'
Total accounts receivable	1,039.40	1,178.60
Unbilled Accounts Receivable	796.9	756.5
Schedule of Unbilled Accounts Receivable [Line Items]	'	'
Balances	$796.90	$756.50

INVENTORY_DETAILS

INVENTORY (DETAILS) (USD $)	Jan. 03, 2014	Dec. 28, 2012
In Millions, unless otherwise specified
Inventory [Abstract]	'	'
Raw materials	$8.50	$14.20
Work in process	7.4	9.8
Finished goods	23.2	24.9
Supplies	10.1	12.6
Inventory	$49.20	$61.50

JOINT_VENTURES_DETAILS

JOINT VENTURES (DETAILS) (USD $)

3 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Jan. 03, 2014

Sep. 27, 2013

Jun. 28, 2013

Mar. 29, 2013

Dec. 28, 2012

Sep. 28, 2012

Jun. 29, 2012

Mar. 30, 2012

Jan. 03, 2014

Dec. 28, 2012

Dec. 30, 2011

Dec. 31, 2010

Joint ventures (Textuals) [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Unconsolidated VIEs, Distributions

'

'

'

'

'

'

'

'

$113

$88.70

$107.30

'

Example of the joint venture activities

'

'

'

'

'

'

'

'

'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 and operation services, including commercial operations, decontamination, decommissioning, and waste management of a nuclear facility in the United Kingdom (“U.K.”); and Operations, maintenance, asset management services to the Canadian energy sector.

'

'

'

Maximum loss exposure that can not be quantified

'

'

'

'

'

'

'

'

'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 scope of 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 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

283.7

'

'

'

314.5

'

'

'

283.7

314.5

436

573.8

Net accounts receivable

2,849

'

'

'

2,869.40

'

'

'

2,849

2,869.40

'

'

Other current assets

173.2

'

'

'

204.2

'

'

'

173.2

204.2

'

'

Accounts and subcontractors payable

688.3

'

'

'

803.5

'

'

'

688.3

803.5

'

'

Billings in excess of costs and accrued earnings on contracts

233.1

'

'

'

289.1

'

'

'

233.1

289.1

'

'

Accrued expenses and other

365.2

'

'

'

277.8

'

'

'

365.2

277.8

'

'

Total URS equity

4,081.20

'

'

'

4,044

'

'

'

4,081.20

4,044

'

'

Noncontrolling interests

145.8

'

'

'

141.9

'

'

'

145.8

141.9

'

'

Unconsolidated Joint Ventures [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Current assets

3,390.70

'

'

'

3,517.20

'

'

'

3,390.70

3,517.20

'

'

Current liabilities

1,838.60

'

'

'

2,001

'

'

'

1,838.60

2,001

'

'

Revenues

2,660.70

2,735.50

2,792

2,802.50

2,972.70

2,947.60

2,690.70

2,361.50

10,990.70

10,972.50

9,545

'

Cost of revenues

-2,564.10

-2,559

-2,641.60

-2,651.30

-2,810.50

-2,753.30

-2,527.50

-2,203.20

-10,416

-10,294.50

-8,988.80

'

Income (loss) from continuing operations before taxes

'

'

'

'

'

'

'

'

497

615.7

229

'

Net income

19.2

88.8

67.3

71.9

70.6

106.7

53.6

79.7

247.2

310.6

-42.9

'

Consolidated Joint Ventures [Member]

'

'

'

'

'

'

'

'

'

'

'

'

Consolidated Joint Ventures [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Cash and cash equivalents

89.4

'

'

'

80.1

'

'

'

89.4

80.1

'

'

Net accounts receivable

199.7

'

'

'

282.2

'

'

'

199.7

282.2

'

'

Other current assets

3

'

'

'

2.9

'

'

'

3

2.9

'

'

Non-current assets

143.1

'

'

'

143.3

'

'

'

143.1

143.3

'

'

Total assets

435.2

'

'

'

508.5

'

'

'

435.2

508.5

'

'

Accounts and subcontractors payable

94.9

'

'

'

185

'

'

'

94.9

185

'

'

Billings in excess of costs and accrued earnings on contracts

14.9

'

'

'

8.7

'

'

'

14.9

8.7

'

'

Accrued expenses and other

39.5

'

'

'

40

'

'

'

39.5

40

'

'

Non-current liabilities

11.9

'

'

'

22.7

'

'

'

11.9

22.7

'

'

Total liabilities

161.2

'

'

'

256.4

'

'

'

161.2

256.4

'

'

Total URS equity

128.2

'

'

'

110.2

'

'

'

128.2

110.2

'

'

Noncontrolling interests

145.8

'

'

'

141.9

'

'

'

145.8

141.9

'

'

Total owners' equity

274

'

'

'

252.1

'

'

'

274

252.1

'

'

Total liabilities and owners' equity

435.2

'

'

'

508.5

'

'

'

435.2

508.5

'

'

Unconsolidated Joint Ventures [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

1,100

1,600

1,700

'

Unconsolidated VIEs [Member]

'

'

'

'

'

'

'

'

'

'

'

'

Consolidated Joint Ventures [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Non-current assets

36.8

'

'

'

23.8

'

'

'

36.8

23.8

'

'

Non-current liabilities

7

'

'

'

7.8

'

'

'

7

7.8

'

'

Unconsolidated Joint Ventures [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Current assets

615.6

'

'

'

594.1

'

'

'

615.6

594.1

'

'

Current liabilities

433.2

'

'

'

372.5

'

'

'

433.2

372.5

'

'

Revenues

'

'

'

'

'

'

'

'

2,154.30

[1]

1,662.20

[1]

1,498

[1]

'

Cost of revenues

'

'

'

'

'

'

'

'

-1,909

[1]

-1,440.60

[1]

-1,201.50

[1]

'

Income (loss) from continuing operations before taxes

'

'

'

'

'

'

'

'

245.3

[1]

221.6

[1]

296.5

[1]

'

Net income

'

'

'

'

'

'

'

'

$218.90

[1]

$206

[1]

$274.70

[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 $)	12 Months Ended
In Millions, unless otherwise specified	Jan. 03, 2014		Dec. 28, 2012		Dec. 30, 2011
Depreciation and amortization expense related to property and equipment (Textuals) [Abstract]	'		'		'
Unamortized computer software costs	$76		$71.10		'
Property plant and equipment [Line Items]	'		'		'
Property plant and equipment, gross	1,284.60		1,286.20		'
Accumulated depreciation and amortization	-676.5		-598.7		'
Property and equipment, net	608.1	[1],[2]	687.5	[1],[2]	'
Gain (loss) on disposal of property and equipment	25.4		3.4		8.9
Construction and mining equipment [Member]	'		'		'
Property plant and equipment [Line Items]	'		'		'
Property plant and equipment, gross	244.4		266.4		'
Construction and mining equipment [Member] | Minimum [Member]	'		'		'
Property plant and equipment [Line Items]	'		'		'
Estimated useful life	'3 years 0 months 0 days		'		'
Construction and mining equipment [Member] | Maximum [Member]	'		'		'
Property plant and equipment [Line Items]	'		'		'
Estimated useful life	'15 years 0 months 0 days		'		'
Computer software [Member]	'		'		'
Property plant and equipment [Line Items]	'		'		'
Property plant and equipment, gross	238.9		219.5		'
Computer software [Member] | Minimum [Member]	'		'		'
Property plant and equipment [Line Items]	'		'		'
Estimated useful life	'3 years 0 months 0 days		'		'
Computer software [Member] | Maximum [Member]	'		'		'
Property plant and equipment [Line Items]	'		'		'
Estimated useful life	'10 years 0 months 0 days		'		'
Computer hardware [Member]	'		'		'
Property plant and equipment [Line Items]	'		'		'
Property plant and equipment, gross	216.1		198.2		'
Computer hardware [Member] | Minimum [Member]	'		'		'
Property plant and equipment [Line Items]	'		'		'
Estimated useful life	'3 years 0 months 0 days		'		'
Computer hardware [Member] | Maximum [Member]	'		'		'
Property plant and equipment [Line Items]	'		'		'
Estimated useful life	'10 years 0 months 0 days		'		'
Vehicles and automotive equipment [Member]	'		'		'
Property plant and equipment [Line Items]	'		'		'
Property plant and equipment, gross	171.6		172.2		'
Vehicles and automotive equipment [Member] | Minimum [Member]	'		'		'
Property plant and equipment [Line Items]	'		'		'
Estimated useful life	'3 years 0 months 0 days		'		'
Vehicles and automotive equipment [Member] | Maximum [Member]	'		'		'
Property plant and equipment [Line Items]	'		'		'
Estimated useful life	'12 years 0 months 0 days		'		'
Leasehold improvements [Member]	'		'		'
Property plant and equipment [Line Items]	'		'		'
Property plant and equipment, gross	141.9		130.1		'
Leasehold improvements [Member] | Minimum [Member]	'		'		'
Property plant and equipment [Line Items]	'		'		'
Estimated useful life	'1 year 0 months 0 days	[3]	'		'
Leasehold improvements [Member] | Maximum [Member]	'		'		'
Property plant and equipment [Line Items]	'		'		'
Estimated useful life	'20 years 0 months 0 days	[3]	'		'
Land and buildings [Member]	'		'		'
Property plant and equipment [Line Items]	'		'		'
Property plant and equipment, gross	100.2		114.1		'
Buildings [Member] | Minimum [Member]	'		'		'
Property plant and equipment [Line Items]	'		'		'
Estimated useful life	'10 years 0 months 0 days		'		'
Buildings [Member] | Maximum [Member]	'		'		'
Property plant and equipment [Line Items]	'		'		'
Estimated useful life	'45 years 0 months 0 days		'		'
Furniture and fixtures [Member]	'		'		'
Property plant and equipment [Line Items]	'		'		'
Property plant and equipment, gross	94.7		97.7		'
Furniture and fixtures [Member] | Minimum [Member]	'		'		'
Property plant and equipment [Line Items]	'		'		'
Estimated useful life	'3 years 0 months 0 days		'		'
Furniture and fixtures [Member] | Maximum [Member]	'		'		'
Property plant and equipment [Line Items]	'		'		'
Estimated useful life	'10 years 0 months 0 days		'		'
Other equipment [Member]	'		'		'
Property plant and equipment [Line Items]	'		'		'
Property plant and equipment, gross	67.5		72.4		'
Other equipment [Member] | Minimum [Member]	'		'		'
Property plant and equipment [Line Items]	'		'		'
Estimated useful life	'3 years 0 months 0 days		'		'
Other equipment [Member] | Maximum [Member]	'		'		'
Property plant and equipment [Line Items]	'		'		'
Estimated useful life	'10 years 0 months 0 days		'		'
Construction in progress [Member]	'		'		'
Property plant and equipment [Line Items]	'		'		'
Property plant and equipment, gross	$9.30		$15.60		'
[1]	B B B B B B B B The unamortized computer software costs were $76.0 million and $71.1 million, respectively, as of January 3, 2014 and December 28, 2012.
[2]	Property and equipment, net is categorized by the location of incorporation of the legal entities.
[3]	Leasehold improvements are amortized over the length of the lease or estimated useful life, whichever is less

ACQUISITION_DETAILS

ACQUISITION (DETAILS)

3 Months Ended

4 Months Ended

12 Months Ended

4 Months Ended

12 Months Ended

Jan. 03, 2014

Sep. 27, 2013

Jun. 28, 2013

Mar. 29, 2013

Dec. 28, 2012

Sep. 28, 2012

Jun. 29, 2012

Mar. 30, 2012

14-May-12

14-May-12

Jan. 03, 2014

Dec. 28, 2012

Dec. 30, 2011

14-May-12

14-May-12

Jan. 03, 2014

Dec. 28, 2012

Dec. 30, 2011

Jan. 03, 2014

Jan. 03, 2014

Jan. 03, 2014

Jan. 03, 2014

Jan. 03, 2014

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

CAD

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 unconsolidated joint venture [Member]

Flint acquisition unconsolidated joint venture [Member]

Flint acquisition unconsolidated joint venture [Member]

USD ($)

CAD

USD ($)

USD ($)

USD ($)

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Business acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business acquisition - date of acquisition agreement

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

14-May-12

'

'

'

'

'

'

'

Acquisition-related expenses

'

'

'

'

'

($800,000)

[1]

$11,300,000

[1]

$5,600,000

[1]

'

'

'

$16,100,000

$1,000,000

'

'

'

$16,100,000

'

'

'

'

'

'

Preliminary allocation of purchase price [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash and cash equivalents

'

'

'

'

'

'

'

'

'

'

'

'

'

4,000,000

'

'

'

'

'

'

'

'

'

Trade and other receivables

'

'

'

'

'

'

'

'

'

'

'

'

'

544,000,000

'

'

'

'

'

'

'

'

'

Inventory

'

'

'

'

'

'

'

'

'

'

'

'

'

61,000,000

'

'

'

'

'

'

'

'

'

Other current assets

'

'

'

'

'

'

'

'

'

'

'

'

'

32,000,000

'

'

'

'

'

'

'

'

'

Investments in and advances to unconsolidated joint ventures

'

'

'

'

'

'

'

'

'

'

'

'

'

147,000,000

'

'

'

'

'

'

'

'

'

Property and equipment

'

'

'

'

'

'

'

'

'

'

'

'

'

420,000,000

'

'

'

'

'

'

'

'

'

Other long-term assets

'

'

'

'

'

'

'

'

'

'

'

'

'

10,000,000

'

'

'

'

'

'

'

'

'

Customer relationships, contracts and backlog

'

'

'

'

'

'

'

'

'

'

'

'

'

163,000,000

'

'

'

'

'

'

'

'

'

Trade names

'

'

'

'

'

'

'

'

'

'

'

'

'

93,000,000

'

'

'

'

'

'

'

'

'

Other

'

'

'

'

'

'

'

'

'

'

'

'

'

10,000,000

'

'

'

'

'

'

'

'

'

Total amount allocated to identifiable intangible assets

'

'

'

'

'

'

'

'

'

'

'

'

'

266,000,000

'

'

'

'

'

'

'

'

'

Current liabilities

'

'

'

'

'

'

'

'

'

'

'

'

'

-244,000,000

'

'

'

'

'

'

'

'

'

Net deferred tax liabilities

'

'

'

'

'

'

'

'

'

'

'

'

'

-77,000,000

'

'

'

'

'

'

'

'

'

Long-term debt

'

'

'

'

'

'

'

'

'

'

'

'

'

-236,000,000

'

'

'

'

'

'

'

'

'

Other long-term liabilities

'

'

'

'

'

'

'

'

'

'

'

'

'

-31,000,000

'

'

'

'

'

'

'

'

'

Total identifiable net assets acquired

'

'

'

'

'

'

'

'

'

'

'

'

'

896,000,000

'

'

'

'

'

'

'

'

'

Goodwill

'

'

'

'

'

'

'

'

'

'

'

'

'

456,000,000

'

'

'

'

'

'

'

'

'

Total purchase price

'

'

'

'

'

'

'

'

'

'

'

'

'

1,352,000,000

'

'

'

'

'

'

'

'

'

Estimated useful life - customer relationships, contracts and backlog

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'1 year 0 months 0 days

'16 years 0 months 0 days

'

'

'

Estimated useful life - trade name and other

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'20 years 0 months 0 days

'

'

'

Estimated useful life - other intangible assets

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'1 year 0 months 0 days

'13 years 0 months 0 days

'

'3 years 0 months 0 days

'40 years 0 months 0 days

Tax-deductible portion of acquired goodwill

142,000,000

'

'

'

223,200,000

'

'

'

'

'

142,000,000

223,200,000

'

'

'

'

'

'

'

'

'

'

'

Business acquisition [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business acquisition - date of acquisition agreement

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

14-May-12

'

'

'

'

'

'

'

Business acquisition - cost of acquired entity per share

'

'

'

'

'

'

'

'

'

'

'

'

'

'

25

'

'

'

'

'

'

'

'

Business acquisition - estimated cost of acquired entity cash paid

'

'

'

'

'

'

'

'

'

'

'

'

'

1,240,000,000

1,240,000,000

'

'

'

'

'

'

'

'

Business acquisition - liabilities assumed

'

'

'

'

'

'

'

'

175,000,000

175,000,000

'

'

'

175,000,000

175,000,000

'

'

'

'

'

'

'

'

Business acquisition - revenues

2,660,700,000

2,735,500,000

2,792,000,000

2,802,500,000

2,972,700,000

2,947,600,000

2,690,700,000

2,361,500,000

'

'

10,990,700,000

10,972,500,000

9,545,000,000

1,500,000

'

'

'

'

'

'

'

'

'

Business acquisition - operating income

113,500,000

179,300,000

145,400,000

152,600,000

171,400,000

203,600,000

149,500,000

161,400,000

'

'

590,800,000

685,900,000

251,100,000

61,200,000

'

'

'

'

'

'

'

'

'

Business acquisition, pro forma information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

11,785,800,000

11,128,700,000

'

'

'

'

'

Net income including noncontrolling interests

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

409,100,000

-6,900,000

'

'

'

'

'

Net income attributable to URS

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

292,900,000

-135,400,000

'

'

'

'

'

Basic EPS

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$3.94

($1.75)

'

'

'

'

'

Diluted EPS

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$3.93

($1.75)

'

'

'

'

'

Acquisition-related expense

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

27,700,000

-27,500,000

[2]

'

'

'

'

'

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

'

'

'

'

'

'

'

'

'

'

'

'

'

31,600,000

'

'

'

'

'

'

'

'

'

Other indebtedness that was repaid

'

'

'

'

'

'

'

'

'

'

'

'

'

110,300,000

'

'

'

'

'

'

'

'

'

Amortization of acquired intangible assets

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$10,300,000

$5,900,000

'

'

'

'

'

'

[1]

For the year ended December 28, 2012, we recorded acquisition-related expenses in connection with our acquisition of Flint. See further discussion in Note 8, bAcquisitions.b

[2]

Included in the pro forma results for the year ended December 30, 2011 is a nonrecurring adjustment related to URS and Flint acquisition-related expenses. These expenses were included in the fiscal year 2011 pro forma results as if the acquisition occurred at the beginning of that fiscal year.

GOODWILL_DETAILS

GOODWILL (DETAILS) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Jan. 03, 2014		Dec. 28, 2012		Dec. 30, 2011
	reportingunits		reportingunits
Finite-Lived Intangible Assets [Line Items]	'		'		'
Balance	$692.20		$522		'
Acquisitions	'		266.3		'
Amortization expense	-107.4		-101.2		-60.6
Other additions and foreign currency translation	-15.1		5.1		'
Balance	569.7		692.2		522
Table of estimated future amortization expense of intangible assets [Abstract]	'		'		'
Future amortization expense, year one	94.5		'		'
Future amortization expense, year two	84		'		'
Future amortization expense, year three	78.8		'		'
Future amortization expense, year four	73		'		'
Future amortization expense, year five	54.9		'		'
Future amortization expense, after year five	184.5		'		'
Total estimated future amortization expense	569.7		692.2		522
Goodwill [Line Items]	'		'		'
Goodwill	3,695.60		3,721.60		3,247.50	[1]
Goodwill acquired	'		456.3		'
Goodwill impairment	'		'		-351.3
Other adjustments	-26	[2]	17.8	[3]	'
Goodwill (Textuals) [Abstract]	'		'		'
Goodwill alllocation adjustment	'		-1.7		'
Foreign currency translation	-26		-16.1		'
Goodwill impairment review [Abstract]	'		'		'
Reporting unit fair value	8,682		'		'
Reporting unit carrying value	6,238.70		'		'
Reporting unit percent fair value above carrying value	39.20%		'		'
Goodwill impairment loss net of tax	'		'		309.4
Interim goodwill impairment review (Textuals) [Abstract]	'		'		'
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	737.4		751.5		758.2	[1]
Transfer between segments	'		-21.5	[4]	'
Other adjustments	-14.1	[2]	14.8	[3]	'
Goodwill impairment review [Abstract]	'		'		'
Reporting unit fair value	2,173		'		'
Reporting unit carrying value	1,509.30		'		'
Reporting unit percent fair value above carrying value	44.00%		'		'
Federal Services Operating Segment [Member]	'		'		'
Goodwill [Line Items]	'		'		'
Goodwill	1,272.70		1,272.70		1,271	[1]
Other adjustments	'		1.7	[3]	'
Goodwill impairment review [Abstract]	'		'		'
Reporting unit fair value	1,646		'		'
Reporting unit carrying value	1,011.60		'		'
Reporting unit percent fair value above carrying value	62.70%		'		'
Federal Services Group [Member]	'		'		'
Goodwill [Line Items]	'		'		'
Goodwill	707.3		707.3		705.6	[1]
Other adjustments	'		1.7	[3]	'
Global Management and Operations Services Group [Member]	'		'		'
Goodwill [Line Items]	'		'		'
Goodwill	565.4		565.4		565.4	[1]
Energy & Construction Operating Segment [Member]	'		'		'
Goodwill [Line Items]	'		'		'
Goodwill	1,278.70		1,281.90		1,218.30	[1]
Goodwill acquired	'		67.8		'
Transfer between segments	'		-4.2	[4]	'
Other adjustments	-3.2	[2]	'		'
Goodwill impairment review [Abstract]	'		'		'
Reporting unit fair value	3,199		'		'
Reporting unit carrying value	2,351.20		'		'
Reporting unit percent fair value above carrying value	36.10%		'		'
Global Management and Operations Services Group [Member]	'		'		'
Goodwill impairment review [Abstract]	'		'		'
Reporting unit fair value	1,398		'		'
Reporting unit carrying value	925.3		'		'
Reporting unit percent fair value above carrying value	51.10%		'		'
Civil Construction and Mining Group [Member]	'		'		'
Goodwill [Line Items]	'		'		'
Goodwill	293.9		293.9		293.9	[1]
Goodwill impairment review [Abstract]	'		'		'
Reporting unit fair value	457		'		'
Reporting unit carrying value	363		'		'
Reporting unit percent fair value above carrying value	25.90%		'		'
Industrial/Process Group [Member]	'		'		'
Goodwill [Line Items]	'		'		'
Goodwill	249.7		252.9		189.3	[1]
Goodwill acquired	'		67.8		'
Transfer between segments	'		-4.2	[4]	'
Other adjustments	-3.2	[2]	'		'
Goodwill impairment review [Abstract]	'		'		'
Reporting unit fair value	392		'		'
Reporting unit carrying value	239		'		'
Reporting unit percent fair value above carrying value	64.00%		'		'
Power Group [Member]	'		'		'
Goodwill [Line Items]	'		'		'
Goodwill	735.1		735.1		735.1	[1]
Goodwill impairment review [Abstract]	'		'		'
Reporting unit fair value	952		'		'
Reporting unit carrying value	823.9		'		'
Reporting unit percent fair value above carrying value	15.50%		'		'
Oil and Gas Operating Segment [Member]	'		'		'
Goodwill [Line Items]	'		'		'
Goodwill	406.8		415.5		'
Goodwill acquired	'		388.5		'
Transfer between segments	'		25.7	[4]	'
Other adjustments	-8.7	[2]	1.3	[3]	'
Goodwill impairment review [Abstract]	'		'		'
Reporting unit fair value	1,664		'		'
Reporting unit carrying value	1,366.60		'		'
Reporting unit percent fair value above carrying value	21.80%		'		'
Customer Relationships, Contracts, and Backlog [Member]	'		'		'
Finite-Lived Intangible Assets [Line Items]	'		'		'
Balance	563.5		491.1		'
Acquisitions	'		163		'
Amortization expense	-100.3		-93.9		'
Other additions and foreign currency translation	-5.1		3.3		'
Balance	458.1		563.5		'
Table of estimated future amortization expense of intangible assets [Abstract]	'		'		'
Future amortization expense, year one	87.5		'		'
Future amortization expense, year two	77		'		'
Future amortization expense, year three	71.9		'		'
Future amortization expense, year four	66.6		'		'
Future amortization expense, year five	48.2		'		'
Future amortization expense, after year five	106.9		'		'
Total estimated future amortization expense	458.1		563.5		'
Customer Relationships, Contracts, and Backlog [Member] | Minimum [Member]	'		'		'
Finite-Lived Intangible Assets [Line Items]	'		'		'
Estimated useful life	'1 year 0 months 0 days		'		'
Customer Relationships, Contracts, and Backlog [Member] | Maximum [Member]	'		'		'
Finite-Lived Intangible Assets [Line Items]	'		'		'
Estimated useful life	'16 years 0 months 0 days		'		'
Trade Name [Member]	'		'		'
Finite-Lived Intangible Assets [Line Items]	'		'		'
Balance	116		25.6		'
Acquisitions	'		93.5		'
Amortization expense	-5.5		-4.8		'
Other additions and foreign currency translation	-4.6		1.7		'
Balance	105.9		116		'
Table of estimated future amortization expense of intangible assets [Abstract]	'		'		'
Future amortization expense, year one	5.9		'		'
Future amortization expense, year two	6.3		'		'
Future amortization expense, year three	6.3		'		'
Future amortization expense, year four	6.3		'		'
Future amortization expense, year five	6.3		'		'
Future amortization expense, after year five	74.8		'		'
Total estimated future amortization expense	105.9		116		'
Trade Name [Member] | Minimum [Member]	'		'		'
Finite-Lived Intangible Assets [Line Items]	'		'		'
Estimated useful life	'1 year 0 months 0 days	[5]	'		'
Trade Name [Member] | Maximum [Member]	'		'		'
Finite-Lived Intangible Assets [Line Items]	'		'		'
Estimated useful life	'20 years 0 months 0 days	[5]	'		'
Trade Name [Member] | Maximum [Member] | Flint acquisition [Member]	'		'		'
Finite-Lived Intangible Assets [Line Items]	'		'		'
Estimated useful life	'20 years 0 months 0 days		'		'
Trade Name [Member] | Maximum [Member] | As Reported [Member] | Flint acquisition [Member]	'		'		'
Finite-Lived Intangible Assets [Line Items]	'		'		'
Estimated useful life	'40 years 0 months 0 days		'		'
Favorable Leases and Other [Member]	'		'		'
Finite-Lived Intangible Assets [Line Items]	'		'		'
Balance	12.7		5.3		'
Acquisitions	'		9.8		'
Amortization expense	-1.6		-2.5		'
Other additions and foreign currency translation	-5.4		0.1		'
Balance	5.7		12.7		'
Table of estimated future amortization expense of intangible assets [Abstract]	'		'		'
Future amortization expense, year one	1.1		'		'
Future amortization expense, year two	0.7		'		'
Future amortization expense, year three	0.6		'		'
Future amortization expense, year four	0.1		'		'
Future amortization expense, year five	0.4		'		'
Future amortization expense, after year five	2.8		'		'
Total estimated future amortization expense	$5.70		$12.70		'
Favorable Leases and Other [Member] | Minimum [Member]	'		'		'
Finite-Lived Intangible Assets [Line Items]	'		'		'
Estimated useful life	'1 year 0 months 0 days		'		'
Favorable Leases and Other [Member] | Maximum [Member]	'		'		'
Finite-Lived Intangible Assets [Line Items]	'		'		'
Estimated useful life	'13 years 0 months 0 days		'		'
[1]	Balances as of December 30, 2011 reflect the realignment of our business as further described in Note 16, bSegment and Related Information.b Of the goodwill, $565.4 million related to our Global Management and Operations Services Group was transferred from the Energy & Construction Division to the Federal Services Division.
[2]	For the year ended January 3, 2014, bOther adjustmentsb include an adjustment for foreign currency translation of $26.0 million.
[3]	Balances as of December 30, 2011 reflect the realignment of our business as further described in Note 16, bSegment and Related Information.b Of the goodwill, $565.4 million related to our Global Management and Operations Services Group was transferred from the Energy & Construction Division to the Federal Services Division. For the year ended December 28, 2012, bInter-segment transfersb include adjustments of $21.5 million to transfer process engineering, and $4.2 million related to the realignment of operations and maintenance services to the oil and gas industry among our Oil & Gas, Infrastructure & Environment, and Energy & Construction Divisions. For the year ended December 28, 2012, bOther adjustmentsb include an adjustment for foreign currency translation of $16.1 million, and an adjustment for the final allocation of our purchase price of Apptis of $1.7 million.
[4]	For the year ended December 28, 2012, bInter-segment transfersb include adjustments of $21.5 million to transfer process engineering, and $4.2 million related to the realignment of operations and maintenance services to the oil and gas industry among our Oil & Gas, Infrastructure & Environment, and Energy & Construction Divisions.
[5]	During the fourth quarter of 2013, we revised the estimated useful life of the Flint trade name from 40 years to 20 years due to a change in our intended use.

BILLINGS_IN_EXCESS_OF_COSTS_AN2

BILLINGS IN EXCESS OF COSTS AND ACCRUED EARNINGS ON CONTRACTS (DETAILS) (USD $)	Jan. 03, 2014	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	$193.10	$211.70
Project-related legal liabilities and other project-related reserves	28	55.2
Advance payments negotiated as a contract condition	6.4	9.8
Normal profit liabilities	0.8	4.8
Estimated losses on uncompleted contracts	4.8	7.6
Total billings in excess of costs and accrued earnings on contracts	$233.10	$289.10

INDEBTEDNESS_DETAILS

INDEBTEDNESS (DETAILS)

4 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

14-May-12

14-May-12

Jan. 03, 2014

Dec. 28, 2012

Dec. 30, 2011

Jan. 03, 2014

Jan. 03, 2014

Dec. 28, 2012

Mar. 15, 2012

Jan. 03, 2014

Dec. 28, 2012

Mar. 15, 2012

Jan. 03, 2014

Dec. 28, 2012

Jan. 03, 2014

Dec. 28, 2012

Jan. 03, 2014

Dec. 28, 2012

Jan. 03, 2014

Dec. 28, 2012

USD ($)

CAD

USD ($)

USD ($)

USD ($)

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]

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 ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Capital leases, future minimum payments due [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Less than one year

'

'

$20,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Second year

'

'

11,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Third year

'

'

9,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fourth year

'

'

4,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fifth year

'

'

100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total minimum lease payments

'

'

45,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Less: amounts representing interest

'

'

1,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Present value of net minimum lease payments

'

'

43,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Indebtedness [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Bank term loans, net of debt issuance costs

'

'

601,800,000

666,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior Notes (net of discount)

'

'

'

'

'

999,100,000

399,600,000

399,500,000

'

599,500,000

599,500,000

'

'

203,800,000

'

'

'

'

'

'

Revolving line of credit

'

'

'

100,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

100,500,000

'

'

Other indebtedness

'

'

110,600,000

94,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total indebtedness

'

'

1,711,500,000

2,064,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding debt

'

'

'

'

'

1,000,000,000

'

'

400,000,000

'

'

600,000,000

'

'

'

'

'

'

605,000,000

670,000,000

Interest rate at period end

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.67%

1.71%

Senior credit facility [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2011 Credit Facility term loan, description of variable rate basis

'

'

'London Interbank Offered Rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2011 Credit Facility term loan, basis spread on variable rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.50%

'

Line of credit facility, maximum borrowing capacity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

51,300,000

50,800,000

'

'

'

'

Line of credit facility, maximum borrowing capacity in foreign currencies

'

'

'

'

'

'

'

'

'

'

'

'

'

'

500,000,000

400,000,000

'

'

'

'

Line of credit facility, maximum sublimit for financial letters of credit

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

500,000,000

'

Line of credit facility, sublimit restricted payment basket

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

200,000,000

150,000,000

Subsidiary guarantors percent threshold individual basis

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10.00%

'

Subsidiary guarantors percent threshold consolidated basis

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

80.00%

'

Repayment of revolving line of credit

'

'

1,124,100,000

583,600,000

115,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior Notes and Canadian Notes [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior Notes, unamortized discount

'

'

'

'

'

900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior Notes, unamortized premium

'

'

'

'

'

'

'

'

'

'

'

'

'

28,000,000

'

'

'

'

'

'

Senior Notes, aggregate principal amount

'

'

'

'

'

'

'

'

'

'

'

'

'

203,800,000

'

'

'

'

'

'

Senior Notes, interest rate, stated percentage

'

'

'

'

'

'

'

'

3.85%

'

'

5.00%

'

'

'

'

'

'

'

'

Senior Notes, issuer redemption price in whole percent of principal

'

'

'

'

'

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior Notes, change of control triggering event redemption price percent of principal

'

'

'

'

'

101.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior Notes, future indebtedness threshold for guarantors

'

'

'

'

'

'

100,000,000

'

'

100,000,000

'

'

'

'

'

'

'

'

'

'

Senior Notes, issuer redemption price in whole or in part percent of principal

'

'

'

'

'

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior Notes, issuer redemption price for all or portion, percent of principal

'

'

'

'

'

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business acquisition [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business acquisition - liabilities assumed

175,000,000

175,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Extinguishment of Canadian Notes Disclosure [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain on extinguishment of notes

'

'

'

'

'

'

'

'

'

'

'

'

4,100,000

'

'

'

'

'

'

'

Write-off of Canadian Notes premium

'

'

23,200,000

'

'

'

'

'

'

'

'

'

23,200,000

'

'

'

'

'

'

'

Prepayment fee

'

'

'

'

'

'

'

'

'

'

'

'

19,100,000

'

'

'

'

'

'

'

Revolving line of credit [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Letters of credit issued, amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

108,300,000

'

'

'

Amounts available on our revolving credit facility

'

'

'

'

'

'

'

'

'

'

'

'

'

'

49,000,000

47,700,000

891,700,000

'

'

'

Average daily revolving line of credit balances

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

135,200,000

139,500,000

'

'

Maximum amounts outstanding at any one point

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

236,400,000

420,000,000

'

'

Effective average interest rates on the revolving line of credit

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.40%

1.90%

'

'

Other indebtedness [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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

'

'

67,100,000

35,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Notes payable, weighted-average interest rate

'

'

3.57%

4.68%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Obligations under capital leases

'

'

43,500,000

59,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of credit facility, aggregate borrowing capacity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

51,300,000

50,800,000

'

'

'

'

Amounts available on our revolving credit facility

'

'

'

'

'

'

'

'

'

'

'

'

'

'

49,000,000

47,700,000

891,700,000

'

'

'

Foreign currency gains (losses) on intercompany loans

'

'

-7,700,000

800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-term debt, by maturity [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

First year

'

'

24,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Second year

'

'

12,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Third year

'

'

63,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fourth year

'

'

456,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fifth year

'

'

505,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Thereafter

'

'

605,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total

'

'

$1,668,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

INDEBTEDNESS_DETAILS_2

INDEBTEDNESS (DETAILS 2) (USD $)	Jan. 03, 2014	Dec. 28, 2012
In Millions, unless otherwise specified
Total indebtedness [Abstract]	'	'
Total indebtedness	$1,711.50	$2,064.30
Current portion of long-term debt	44.6	71.8
Long-term debt	$1,666.90	$1,992.50

FAIR_VALUE_OF_DEBT_INSTRUMENTS

FAIR VALUE OF DEBT INSTRUMENTS AND DERIVATIVE INSTRUMENTS (DETAILS)	12 Months Ended
	Jan. 03, 2014	Dec. 28, 2012	Mar. 30, 2012	Mar. 30, 2012	Jan. 03, 2014	Dec. 28, 2012	Jan. 03, 2014	Dec. 28, 2012
	USD ($)	USD ($)	USD ($)	CAD	Senior Notes [Member]	Senior Notes and Canadian Notes [Member]	Credit Facility Term Loan [Member]	Credit Facility Term Loan [Member]
					USD ($)	USD ($)	USD ($)	USD ($)
Debt Instrument [Line Items]	'	'	'	'	'	'	'	'
Outstanding debt	'	'	'	'	$1,000,000,000	$1,200,000,000	$605,000,000	$670,000,000
Fair values of our term loans	'	'	'	'	'	'	603,200,000	667,300,000
Fair value of our Senior Notes	'	'	'	'	983,000,000	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]	'	'	'	'	'	'	'	'
Foreign currency gains (losses) on intercompany loans	($7,700,000)	$800,000	'	'	'	'	'	'

INCOME_TAXES_DETAILS

INCOME TAXES (DETAILS) (USD $)

3 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Jan. 03, 2014

Sep. 27, 2013

Jun. 28, 2013

Mar. 29, 2013

Dec. 28, 2012

Sep. 28, 2012

Jun. 29, 2012

Mar. 30, 2012

Jan. 03, 2014

Dec. 28, 2012

Dec. 30, 2011

Effective income tax rate continuing operations tax rate reconciliation [Abstract]

'

'

'

'

'

'

'

'

'

'

'

U.S. statutory rate applied to income (loss) before taxes ($)

'

'

'

'

'

'

'

'

$174

$215.50

$80.10

U.S. statutory rate applied to income (loss) before taxes (%)

'

'

'

'

'

'

'

'

35.00%

35.00%

35.00%

State taxes, net of federal benefit ($)

'

'

'

'

'

'

'

'

13.7

26.3

17.7

State taxes, net of federal benefit (%)

'

'

'

'

'

'

'

'

2.80%

4.30%

7.70%

Adjustments to valuation allowances ($)

'

'

'

'

'

'

'

'

4.4

4

19.6

Adjustments to valuation allowances (%)

'

'

'

'

'

'

'

'

0.90%

0.60%

8.50%

Foreign income taxed at rates other than 35% ($)

'

'

'

'

'

'

'

'

-10.2

-24.4

-27.2

Foreign income taxed at rates other than 35% (%)

'

'

'

'

'

'

'

'

-2.10%

-4.10%

-11.90%

Goodwill impairment ($)

'

'

'

'

'

'

'

'

'

'

86.3

Goodwill impairment (%)

'

'

'

'

'

'

'

'

'

'

37.70%

Exclusion of tax on noncontrolling interests ($)

'

'

'

'

'

'

'

'

-19.8

-29.9

-30.1

Exclusion of tax on noncontrolling interests (%)

'

'

'

'

'

'

'

'

-4.00%

-4.90%

-13.20%

Other adjustments ($)

'

'

'

'

'

'

'

'

5.6

-1.6

-3

Other adjustments (%)

'

'

'

'

'

'

'

'

1.10%

-0.10%

-1.20%

Total income tax expense (benefit)

44.3

[1]

42.3

[1]

38.9

[1]

42.2

[1]

34.7

66.1

40.5

48.6

167.7

189.9

143.4

Effective income tax rate %

'

'

'

'

'

'

'

'

33.70%

30.80%

62.60%

Other income tax disclosure (Textuals) [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Federal, state and foreign NOL carryovers resulted in a deferred tax asset

129.9

'

'

'

132.2

'

'

'

129.9

132.2

108.4

Operating loss carryforwards, valuation allowance

96.7

'

'

'

'

'

'

'

96.7

'

'

Tax-deductible portion of acquired goodwill

142

'

'

'

223.2

'

'

'

142

223.2

'

Estimated tax deduction for goodwill for subsequent year

72.5

'

'

'

'

'

'

'

72.5

'

'

Indefinite reinvestment of undistributed foreign earnings

431.9

'

'

'

'

'

'

'

431.9

'

'

Maximum [Member]

'

'

'

'

'

'

'

'

'

'

'

Other income tax disclosure (Textuals) [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Deductible range remaining goodwill amortization

'

'

'

'

'

'

'

'

'13 years 0 months 0 days

'

'

Federal [Member]

'

'

'

'

'

'

'

'

'

'

'

Operating loss carryforwards [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Operating loss carryforwards

29.1

'

'

'

'

'

'

'

29.1

'

'

Federal [Member] | Minimum [Member]

'

'

'

'

'

'

'

'

'

'

'

Operating loss carryforwards [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Operating loss carryforwards expiration dates

'

'

'

'

'

'

'

'

1-Jan-20

'

'

Federal [Member] | Maximum [Member]

'

'

'

'

'

'

'

'

'

'

'

Operating loss carryforwards [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Operating loss carryforwards expiration dates

'

'

'

'

'

'

'

'

31-Dec-32

'

'

State [Member]

'

'

'

'

'

'

'

'

'

'

'

Operating loss carryforwards [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Operating loss carryforwards

257.2

'

'

'

'

'

'

'

257.2

'

'

State [Member] | Minimum [Member]

'

'

'

'

'

'

'

'

'

'

'

Operating loss carryforwards [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Operating loss carryforwards expiration dates

'

'

'

'

'

'

'

'

1-Jan-14

'

'

State [Member] | Maximum [Member]

'

'

'

'

'

'

'

'

'

'

'

Operating loss carryforwards [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Operating loss carryforwards expiration dates

'

'

'

'

'

'

'

'

31-Dec-32

'

'

Foreign [Member]

'

'

'

'

'

'

'

'

'

'

'

Operating loss carryforwards [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Operating loss carryforwards

$535.30

'

'

'

'

'

'

'

$535.30

'

'

[1]

During the fourth quarter of 2013, we recorded income tax expense of $10.0 million related to prior quarters. This included U.S. tax on the sale of Canadian properties of $6.4 million and dividends from a Canadian joint venture of $3.6 million. This amount recorded in the fourth quarter was not material to prior quarters and, accordingly, the prior quarters have not been revised. On an after-tax basis, these items resulted in decreases to net income and diluted EPS of $10.0 million and $0.15, respectively.

INCOME_TAXES_DETAILS_2

INCOME TAXES (DETAILS 2) (USD $)

3 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Jan. 03, 2014

Sep. 27, 2013

Jun. 28, 2013

Mar. 29, 2013

Dec. 28, 2012

Sep. 28, 2012

Jun. 29, 2012

Mar. 30, 2012

Jan. 03, 2014

Dec. 28, 2012

Dec. 30, 2011

Current components of income tax expense:

'

'

'

'

'

'

'

'

'

'

'

Federal

'

'

'

'

'

'

'

'

$76.10

$152.30

$78.30

State and local

'

'

'

'

'

'

'

'

9.8

35.9

17.6

Foreign

'

'

'

'

'

'

'

'

8.8

18.3

19.2

Subtotal

'

'

'

'

'

'

'

'

94.7

206.5

115.1

Deferred components of income tax expense:

'

'

'

'

'

'

'

'

'

'

'

Federal

'

'

'

'

'

'

'

'

70.8

-10.5

26.2

State and local

'

'

'

'

'

'

'

'

9.7

1

5.6

Foreign

'

'

'

'

'

'

'

'

-7.5

-7.1

-3.5

Subtotal

'

'

'

'

'

'

'

'

73

-16.6

28.3

Total income tax expense (benefit)

44.3

[1]

42.3

[1]

38.9

[1]

42.2

[1]

34.7

66.1

40.5

48.6

167.7

189.9

143.4

Geographic areas income before income taxes [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Income before income taxes: United States

'

'

'

'

'

'

'

'

445.2

534.9

158.3

Income before income taxes: International

'

'

'

'

'

'

'

'

51.8

80.8

70.7

Total income (loss) before income taxes and noncontrolling interests

'

'

'

'

'

'

'

'

497

615.7

229

Deferred tax assets:

'

'

'

'

'

'

'

'

'

'

'

Accrued employee benefits

230.7

'

'

'

237.6

'

'

'

230.7

237.6

200

Net operating losses

129.9

'

'

'

132.2

'

'

'

129.9

132.2

108.4

Accrued liabilities

59.7

'

'

'

71.9

'

'

'

59.7

71.9

60.6

Insurance reserves

15.9

'

'

'

38.2

'

'

'

15.9

38.2

40.3

Tax credits

13

'

'

'

15.1

'

'

'

13

15.1

10.5

Other

20.6

'

'

'

23.1

'

'

'

20.6

23.1

19.6

Total deferred tax assets

469.8

'

'

'

518.1

'

'

'

469.8

518.1

439.4

Valuation allowance on deferred tax assets

-145

'

'

'

-137.6

'

'

'

-145

-137.6

-124

Net deferred tax assets

324.8

'

'

'

380.5

'

'

'

324.8

380.5

315.4

Deferred tax liabilities:

'

'

'

'

'

'

'

'

'

'

'

Depreciation and amortization

-456.4

'

'

'

-466.1

'

'

'

-456.4

-466.1

-360.8

Contract revenue and costs

-126.9

'

'

'

-79.9

'

'

'

-126.9

-79.9

-74.2

Subsidiary basis difference

-150.1

'

'

'

-146.8

'

'

'

-150.1

-146.8

-145.5

Total deferred tax liabilities

-733.4

'

'

'

-692.8

'

'

'

-733.4

-692.8

-580.5

Deferred tax liabilities, net of deferred tax assets

-408.6

'

'

'

-312.3

'

'

'

-408.6

-312.3

-265.1

Reconciliation of the beginning and ending amount of unrecognized tax benefits

'

'

'

'

'

'

'

'

'

'

'

Unrecognized tax benefits beginning balance

'

'

'

15.4

'

'

'

16.7

15.4

16.7

21.5

Gross increase - tax positions in prior years

'

'

'

'

'

'

'

'

1.7

1.2

2.7

Gross decrease - tax positions in prior years

'

'

'

'

'

'

'

'

-0.2

-1.2

-3.6

Gross increase - current period tax positions

'

'

'

'

'

'

'

'

'

1.2

'

Settlements

'

'

'

'

'

'

'

'

-1.4

-0.2

-0.2

Lapse of statute of limitations

'

'

'

'

'

'

'

'

-1.5

-2.4

-3.7

Unrecognized tax benefits acquired in current year

'

'

'

'

'

'

'

'

'

0.1

'

Unrecognized tax benefits ending balance

14

'

'

'

15.4

'

'

'

14

15.4

16.7

Unrecognized tax benefits (Textuals) [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Unrecognized tax benefits that would impact effective tax rate

9.8

'

'

'

'

'

'

'

9.8

'

'

Unrecognized tax benefits in interest expense and penalties

'

'

'

'

'

'

'

'

0.5

-1.4

-1.4

Accrued unrecognized tax benefits in interest expense and penalties

5.8

'

'

'

5.3

'

'

'

5.8

5.3

6.7

Reasonably possible change in unrecognized tax benefit

$2.70

'

'

'

'

'

'

'

$2.70

'

'

[1]

During the fourth quarter of 2013, we recorded income tax expense of $10.0 million related to prior quarters. This included U.S. tax on the sale of Canadian properties of $6.4 million and dividends from a Canadian joint venture of $3.6 million. This amount recorded in the fourth quarter was not material to prior quarters and, accordingly, the prior quarters have not been revised. On an after-tax basis, these items resulted in decreases to net income and diluted EPS of $10.0 million and $0.15, respectively.

EMPLOYEE_RETIREMENT_AND_POSTRE2

EMPLOYEE RETIREMENT AND POST-RETIREMENT BENEFIT PLANS (DETAILS) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Jan. 03, 2014	Dec. 28, 2012	Dec. 30, 2011
Deferred compensation plans	'	'	'
Accrued benefit amounts for deferred compensation plans	$22.60	$23.20	'
Multiemployer pension plans [Abstract]	'	'	'
Contributions to multiemployer pension plans	49.7	48.2	40.7
Amounts recognized in our Consolidated Balance Sheets consist of:	'	'	'
Accrued benefit liability included in other long-term liabilities	285.7	300.9	'
Other changes in plan assets and benefit obligations recognized in other comprehensive income:	'	'	'
Net loss (gain)	-5.5	-45.6	-80.9
Amortization or curtailment recognition of prior service credit	-19	-7.4	-4.1
Assumed blended health care cost trend rates at year-end:	'	'	'
Health care cost trend rate assumed for next year	'	7.94%	'
Domestic Defined Contribution Plan [Member]	'	'	'
Change in plan assets:	'	'	'
Employer contributions	90.4	91	48.1
Other defined benefit plans disclosures (Textuals) [Abstract]	'	'	'
Cash contributions	90.4	91	48.1
Foreign Defined Contribution Plan [Member]	'	'	'
Change in plan assets:	'	'	'
Employer contributions	45.6	35.9	20.2
Other defined benefit plans disclosures (Textuals) [Abstract]	'	'	'
Cash contributions	45.6	35.9	20.2
Global equity funds [Member]	'	'	'
Change in plan assets:	'	'	'
Fair value of plan assets at end of year	82.4	72.2	'
Fair values of defined benefit plans and post-retirement benefit plan assets [Abstract]	'	'	'
Fair value of plan assets	82.4	72.2	'
Significant Other Observable Inputs (Level 2) | Global equity funds [Member]	'	'	'
Change in plan assets:	'	'	'
Fair value of plan assets at end of year	82.4	72.2	'
Fair values of defined benefit plans and post-retirement benefit plan assets [Abstract]	'	'	'
Fair value of plan assets	82.4	72.2	'
Significant Unobservable Inputs (Level 3)	'	'	'
Change in plan assets:	'	'	'
Fair value of plan assets at beginning of year	74.1	47.9	'
Realized gains (losses)	0.1	'	'
Unrealized gains (losses)	6.3	4.4	'
Purchases, sales, issuances and settlements, net	8.2	21.8	'
Fair value of plan assets at end of year	88.7	74.1	'
Fair values of defined benefit plans and post-retirement benefit plan assets [Abstract]	'	'	'
Fair value of plan assets	88.7	74.1	'
Significant Unobservable Inputs (Level 3) | Fixed income securities [Member]	'	'	'
Change in plan assets:	'	'	'
Fair value of plan assets at end of year	9.9	'	'
Fair values of defined benefit plans and post-retirement benefit plan assets [Abstract]	'	'	'
Fair value of plan assets	9.9	'	'
Significant Unobservable Inputs (Level 3) | International property fund [Member]	'	'	'
Change in plan assets:	'	'	'
Fair value of plan assets at end of year	78.8	74.1	'
Fair values of defined benefit plans and post-retirement benefit plan assets [Abstract]	'	'	'
Fair value of plan assets	78.8	74.1	'
Pension Plans, Defined Benefit [Member]	'	'	'
Change in plan assets:	'	'	'
Fair value of plan assets at end of year	697.7	645	'
Net periodic pension costs:	'	'	'
Amortization of prior service costs	'	0.2	'
Recognized actuarial loss	'	-8.9	'
Fair values of defined benefit plans and post-retirement benefit plan assets [Abstract]	'	'	'
Fair value of plan assets	697.7	645	'
Pension Plans, Defined Benefit [Member] | Minimum [Member]	'	'	'
Other defined benefit plans disclosures (Textuals) [Abstract]	'	'	'
Estimated future employer contributions in current fiscal year	45	'	'
Pension Plans, Defined Benefit [Member] | Maximum [Member]	'	'	'
Other defined benefit plans disclosures (Textuals) [Abstract]	'	'	'
Estimated future employer contributions in current fiscal year	50	'	'
Pension Plans, Defined Benefit [Member] | Cash and cash equivalents [Member]	'	'	'
Change in plan assets:	'	'	'
Fair value of plan assets at end of year	15.7	21	'
Fair values of defined benefit plans and post-retirement benefit plan assets [Abstract]	'	'	'
Fair value of plan assets	15.7	21	'
Pension Plans, Defined Benefit [Member] | US equity securities [Member]	'	'	'
Change in plan assets:	'	'	'
Fair value of plan assets at end of year	78.1	74.4	'
Fair values of defined benefit plans and post-retirement benefit plan assets [Abstract]	'	'	'
Fair value of plan assets	78.1	74.4	'
Pension Plans, Defined Benefit [Member] | International equity securities [Member]	'	'	'
Change in plan assets:	'	'	'
Fair value of plan assets at end of year	95.6	94.6	'
Fair values of defined benefit plans and post-retirement benefit plan assets [Abstract]	'	'	'
Fair value of plan assets	95.6	94.6	'
Pension Plans, Defined Benefit [Member] | Fixed income securities [Member]	'	'	'
Change in plan assets:	'	'	'
Fair value of plan assets at end of year	304.4	264.9	'
Fair values of defined benefit plans and post-retirement benefit plan assets [Abstract]	'	'	'
Fair value of plan assets	304.4	264.9	'
Pension Plans, Defined Benefit [Member] | International property fund [Member]	'	'	'
Change in plan assets:	'	'	'
Fair value of plan assets at end of year	121.5	117.9	'
Fair values of defined benefit plans and post-retirement benefit plan assets [Abstract]	'	'	'
Fair value of plan assets	121.5	117.9	'
Pension Plans, Defined Benefit [Member] | Quoted Prices in Active Markets (Level 1)	'	'	'
Change in plan assets:	'	'	'
Fair value of plan assets at end of year	5.1	8	'
Fair values of defined benefit plans and post-retirement benefit plan assets [Abstract]	'	'	'
Fair value of plan assets	5.1	8	'
Pension Plans, Defined Benefit [Member] | Quoted Prices in Active Markets (Level 1) | Cash and cash equivalents [Member]	'	'	'
Change in plan assets:	'	'	'
Fair value of plan assets at end of year	5.1	8	'
Fair values of defined benefit plans and post-retirement benefit plan assets [Abstract]	'	'	'
Fair value of plan assets	5.1	8	'
Pension Plans, Defined Benefit [Member] | Significant Other Observable Inputs (Level 2)	'	'	'
Change in plan assets:	'	'	'
Fair value of plan assets at end of year	603.9	562.9	'
Fair values of defined benefit plans and post-retirement benefit plan assets [Abstract]	'	'	'
Fair value of plan assets	603.9	562.9	'
Pension Plans, Defined Benefit [Member] | Significant Other Observable Inputs (Level 2) | Cash and cash equivalents [Member]	'	'	'
Change in plan assets:	'	'	'
Fair value of plan assets at end of year	10.6	13	'
Fair values of defined benefit plans and post-retirement benefit plan assets [Abstract]	'	'	'
Fair value of plan assets	10.6	13	'
Pension Plans, Defined Benefit [Member] | Significant Other Observable Inputs (Level 2) | US equity securities [Member]	'	'	'
Change in plan assets:	'	'	'
Fair value of plan assets at end of year	78.1	74.4	'
Fair values of defined benefit plans and post-retirement benefit plan assets [Abstract]	'	'	'
Fair value of plan assets	78.1	74.4	'
Pension Plans, Defined Benefit [Member] | Significant Other Observable Inputs (Level 2) | International equity securities [Member]	'	'	'
Change in plan assets:	'	'	'
Fair value of plan assets at end of year	95.6	94.6	'
Fair values of defined benefit plans and post-retirement benefit plan assets [Abstract]	'	'	'
Fair value of plan assets	95.6	94.6	'
Pension Plans, Defined Benefit [Member] | Significant Other Observable Inputs (Level 2) | Fixed income securities [Member]	'	'	'
Change in plan assets:	'	'	'
Fair value of plan assets at end of year	294.5	264.9	'
Fair values of defined benefit plans and post-retirement benefit plan assets [Abstract]	'	'	'
Fair value of plan assets	294.5	264.9	'
Pension Plans, Defined Benefit [Member] | Significant Other Observable Inputs (Level 2) | International property fund [Member]	'	'	'
Change in plan assets:	'	'	'
Fair value of plan assets at end of year	42.7	43.8	'
Fair values of defined benefit plans and post-retirement benefit plan assets [Abstract]	'	'	'
Fair value of plan assets	42.7	43.8	'
Domestic Pension Plans [Member]	'	'	'
Change in benefit obligation:	'	'	'
Benefit obligation at beginning of year	443.4	383.3	'
Service cost	7.5	7.5	6.8
Interest cost	17.6	18.9	19
Plan amendment	-2.7	'	'
Benefits paid and expenses	-21.6	-16.6	'
Actuarial (gain) loss	-34.4	50.3	'
Benefit obligation at end of year	415.2	443.4	383.3
Change in plan assets:	'	'	'
Fair value of plan assets at beginning of year	274.2	236.4	'
Actual gain (loss) on plan assets	28.3	31.4	'
Employer contributions	16	18.4	'
Employer direct benefit payments	5.1	4.6	'
Benefits paid and expenses	-21.6	-16.6	'
Fair value of plan assets at end of year	302	274.2	236.4
Underfunded status reconciliation:	'	'	'
Underfunded status	-113.2	-169.2	'
Amounts recognized in our Consolidated Balance Sheets consist of:	'	'	'
Accrued benefit liability included in current liabilities	20.9	5.1	'
Accrued benefit liability included in other long-term liabilities	92.3	164.1	'
Net amount recognized	113.2	169.2	'
Amounts recognized in accumulated other comprehensive income consist of:	'	'	'
Prior service income	0.2	0.6	'
Net gain (loss)	80.8	140.5	'
Net amount recognized	80.6	139.9	'
Additional information:	'	'	'
Accumulated benefit obligation	409.7	437.6	'
Weighted-average assumptions used to determine benefit obligations at year end:	'	'	'
Discount rate	4.97%	4.02%	'
Rate of compensation increase	4.50%	4.50%	'
Net periodic pension costs:	'	'	'
Service cost	7.5	7.5	6.8
Interest cost	17.6	18.9	19
Expected return on plan assets	-19.2	-17.7	-16.4
Amortization of prior service costs	2.3	-3	-3.2
Recognized actuarial loss	16.2	9.8	7.4
Total net periodic pension costs	24.4	15.5	13.6
Other changes in plan assets and benefit obligations recognized in other comprehensive income:	'	'	'
Prior service cost	2.7	'	-1.1
Net loss (gain)	-43.5	36.7	27.3
Amortization or curtailment recognition of prior service credit	-2.3	3	3.2
Amortization or settlement recognition of net loss	-16.2	-9.8	-7.4
Total recognized in other comprehensive loss (income)	-59.3	29.9	22
Total recognized in net periodic costs and other comprehensive loss (income) [Abstract]]	'	'	'
Total	-34.9	45.4	35.6
Weighted-average assumptions used to determine net periodic cost for years ended:	'	'	'
Discount rate	4.02%	5.05%	5.55%
Rate of compensation increase	4.50%	4.50%	4.50%
Expected long-term rate of return on plan assets	7.35%	7.34%	7.44%
Measurement dates	'2012-12-28	'2011-12-30	'2010-12-31
Other defined benefit plans disclosures (Textuals) [Abstract]	'	'	'
Cash contributions	16	18.4	'
Weighted-average target asset allocation for the defined benefit and post-retirement benefit plans	'	'	'
Weighted-average target asset allocation percentage	100.00%	'	'
Estimated future benefit payments to be paid out in the next ten years [Abstract]	'	'	'
Year one	38	'	'
Year two	23	'	'
Year three	23	'	'
Year four	24	'	'
Year five	25	'	'
Next five fiscal years thereafter	130	'	'
Total	263	'	'
Fair values of defined benefit plans and post-retirement benefit plan assets [Abstract]	'	'	'
Fair value of plan assets	302	274.2	236.4
Domestic Pension Plans [Member] | Equity securities [Member]	'	'	'
Weighted-average target asset allocation for the defined benefit and post-retirement benefit plans	'	'	'
Weighted-average target asset allocation percentage	45.00%	'	'
Domestic Pension Plans [Member] | Debt securities [Member]	'	'	'
Weighted-average target asset allocation for the defined benefit and post-retirement benefit plans	'	'	'
Weighted-average target asset allocation percentage	55.00%	'	'
Foreign Pension Plans [Member]	'	'	'
Change in benefit obligation:	'	'	'
Benefit obligation at beginning of year	485.9	447.9	'
Service cost	0.5	0.6	0.6
Interest cost	22.2	22.6	24.4
Employee contributions	0.4	0.4	'
Benefits paid and expenses	-15.4	-14.9	'
Exchange rate changes	13.2	20.8	'
Actuarial (gain) loss	49.8	8.5	'
Benefit obligation at end of year	556.6	485.9	447.9
Change in plan assets:	'	'	'
Fair value of plan assets at beginning of year	370.8	334.3	'
Actual gain (loss) on plan assets	22.2	25.6	'
Employer contributions	9.1	9.7	'
Employee contributions	0.4	0.4	'
Exchange rate changes	8.6	15.7	'
Benefits paid and expenses	-15.4	-14.9	'
Fair value of plan assets at end of year	395.7	370.8	334.3
Underfunded status reconciliation:	'	'	'
Underfunded status	-160.9	-115.1	'
Amounts recognized in our Consolidated Balance Sheets consist of:	'	'	'
Accrued benefit liability included in other long-term liabilities	160.9	115.1	'
Net amount recognized	160.9	115.1	'
Amounts recognized in accumulated other comprehensive income consist of:	'	'	'
Net gain (loss)	96.1	41.6	'
Net amount recognized	96.1	41.6	'
Additional information:	'	'	'
Accumulated benefit obligation	545.1	470.7	'
Weighted-average assumptions used to determine benefit obligations at year end:	'	'	'
Discount rate	4.70%	4.80%	'
Rate of compensation increase	3.30%	2.80%	'
Net periodic pension costs:	'	'	'
Service cost	0.5	0.6	0.6
Interest cost	22.2	22.6	24.4
Expected return on plan assets	-23.2	-22.2	-22.9
Total net periodic pension costs	-0.5	1	2.1
Other changes in plan assets and benefit obligations recognized in other comprehensive income:	'	'	'
Net loss (gain)	50.9	5.1	48.6
Effect of exchange rate changes in amounts included in accumulated other comprehensive income	3.6	1.7	-1.9
Total recognized in other comprehensive loss (income)	54.5	6.8	46.7
Total recognized in net periodic costs and other comprehensive loss (income) [Abstract]]	'	'	'
Total	54	7.8	48.8
Weighted-average assumptions used to determine net periodic cost for years ended:	'	'	'
Discount rate	4.80%	5.00%	5.70%
Rate of compensation increase	2.80%	3.00%	3.45%
Expected long-term rate of return on plan assets	7.00%	7.00%	6.96%
Measurement dates	'2012-12-28	'2011-12-30	'2010-12-31
Other defined benefit plans disclosures (Textuals) [Abstract]	'	'	'
Cash contributions	9.1	9.7	'
Weighted-average target asset allocation for the defined benefit and post-retirement benefit plans	'	'	'
Weighted-average target asset allocation percentage	100.00%	'	'
Estimated future benefit payments to be paid out in the next ten years [Abstract]	'	'	'
Year one	17	'	'
Year two	17	'	'
Year three	18	'	'
Year four	18	'	'
Year five	19	'	'
Next five fiscal years thereafter	103	'	'
Total	192	'	'
Fair values of defined benefit plans and post-retirement benefit plan assets [Abstract]	'	'	'
Fair value of plan assets	395.7	370.8	334.3
Foreign Pension Plans [Member] | Equity securities [Member]	'	'	'
Weighted-average target asset allocation for the defined benefit and post-retirement benefit plans	'	'	'
Weighted-average target asset allocation percentage	30.00%	'	'
Foreign Pension Plans [Member] | Debt securities [Member]	'	'	'
Weighted-average target asset allocation for the defined benefit and post-retirement benefit plans	'	'	'
Weighted-average target asset allocation percentage	36.00%	'	'
Foreign Pension Plans [Member] | Real estate [Member]	'	'	'
Weighted-average target asset allocation for the defined benefit and post-retirement benefit plans	'	'	'
Weighted-average target asset allocation percentage	6.00%	'	'
Foreign Pension Plans [Member] | Hedge funds [Member]	'	'	'
Weighted-average target asset allocation for the defined benefit and post-retirement benefit plans	'	'	'
Weighted-average target asset allocation percentage	25.00%	'	'
Foreign Pension Plans [Member] | Other [Member]	'	'	'
Weighted-average target asset allocation for the defined benefit and post-retirement benefit plans	'	'	'
Weighted-average target asset allocation percentage	3.00%	'	'
Post-retirement Benefit Plans [Member]	'	'	'
Change in benefit obligation:	'	'	'
Benefit obligation at beginning of year	43.6	'	'
Benefit obligation at end of year	38.9	43.6	'
Change in plan assets:	'	'	'
Fair value of plan assets at beginning of year	3.1	'	'
Fair value of plan assets at end of year	3.5	3.1	'
Weighted-average assumptions used to determine benefit obligations at year end:	'	'	'
Discount rate	4.61%	3.48%	'
Net periodic pension costs:	'	'	'
Total net periodic pension costs	1.8	2.5	1.8
Weighted-average assumptions used to determine net periodic cost for years ended:	'	'	'
Discount rate	3.48%	4.69%	5.23%
Expected long-term rate of return on plan assets	7.50%	7.50%	7.50%
Assumed blended health care cost trend rates at year-end:	'	'	'
Health care cost trend rate assumed for next year	7.92%	'	'
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	4.94%	4.94%	'
Fair values of defined benefit plans and post-retirement benefit plan assets [Abstract]	'	'	'
Fair value of plan assets	3.5	3.1	'
Post-retirement Benefit Plans [Member] | Minimum [Member]	'	'	'
Other defined benefit plans disclosures (Textuals) [Abstract]	'	'	'
Estimated future employer contributions in current fiscal year	3	'	'
Assumed blended health care cost trend rates at year-end:	'	'	'
Year that the rate reaches the ultimate trend rate	'2020	'2020	'
Post-retirement Benefit Plans [Member] | Maximum [Member]	'	'	'
Other defined benefit plans disclosures (Textuals) [Abstract]	'	'	'
Estimated future employer contributions in current fiscal year	$4	'	'
Assumed blended health care cost trend rates at year-end:	'	'	'
Year that the rate reaches the ultimate trend rate	'2024	'2024	'

STOCKHOLDERS_EQUITY_DETAILS

STOCKHOLDERS' EQUITY (DETAILS) (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Jan. 03, 2014		Dec. 28, 2012	Dec. 30, 2011
Dividends [Line Items]	'		'	'
Dividends payable - amount per share	$0.84		$0.80	'
Cash dividends declared	$63.80		$61.40	'
Dividends payable - total amount paid	62.2		44.7	'
Share-based compensation arrangement by share-based payment award [Line Items]	'		'	'
Restricted stock shares available for future grant	6.5		'	'
Incremental authorized shares	1.5		'	'
Stock-based compensation expense	'		'	'
Stock-based compensation expense	31.8		43.6	45.3
Stock-based compensation expense included in cost of revenues	23.5		33.2	35.1
Stock-based compensation expense included in general and administrative expenses	8.3		10.4	10.2
Total income tax benefits recognized in our net income related to stock-based compensation expense	11.6		16	17.3
Employee service share-based compensation, aggregate disclosures (Textuals) [Abstract]	'		'	'
Employee service share-based compensation, nonvested awards, total compensation cost not yet recognized, period for recognition	'2 years 4 months 24 days		'	'
Equity, class of treasury stock [Line Items]	'		'	'
Cost of common stock repurchased	93.3		40	242.8
Stock Repurchase Program Authorized Shares - Minimum [Member]	'		'	'
Schedule of stock repurchase program [Abstract]	'		'	'
Stock repurchase program number of shares authorized to be repurchased	3		3	'
Stock Repurchase Program Authorized Shares - Maximum [Member]	'		'	'
Schedule of stock repurchase program [Abstract]	'		'	'
Stock repurchase program number of shares authorized to be repurchased	6		6	'
Stock repurchase program authorized number of shares - year one	12		'	'
Employee Stock Purchase Plan [Member]	'		'	'
Stock-based compensation expense	'		'	'
Stock-based compensation expense	0.6		0.5	0.5
Employee Stock Purchase Plan [Abstract]	'		'	'
Employee stock purchase plan percent of compensation limitation	10.00%		'	'
Employee stock purchase plan share price percent of fair value	95.00%		'	'
Employee stock purchase plan stock issued during period, shares	0.4		0.1	0.2
Employee stock purchase plan stock issued during period, value	20.2		8.9	11.7
Restricted Stock Awards And Units [Member]	'		'	'
Share-based compensation arrangement by share-based payment award [Line Items]	'		'	'
Restricted stock shares available for future grant	1.8		'	'
Stock-based compensation expense	'		'	'
Stock-based compensation expense	31.2		43.1	44.8
Employee service share-based compensation, aggregate disclosures (Textuals) [Abstract]	'		'	'
Employee service share-based compensation, nonvested awards, total compensation cost not yet recognized	46.2		'	'
Schedule of share-based compensation, restricted stock fair value (Table) [Abstract]	'		'	'
Fair value of shares vested	43.9		42	'
Grant date fair values of restricted stock awards and units granted	69.2		54.3	'
Shares	'		'	'
Nonvested restricted stock awards and units - beginning balance	2.7		2.4	2.5
Nonvested restricted stock awards and units granted	1.4		1.4	1
Nonvested restricted stock awards and units vested	-1		-1	-1
Nonvested restricted stock awards and units forfeited	-0.3		-0.1	-0.1
Nonvested restricted stock awards and units - ending balance	2.8		2.7	2.4
Weighted Average Grant Date Fair Value	'		'	'
Nonvested restricted stock awards and units, weighted-average grant date fair value - beginning balance	$40.03		$42.86	$42.92
Nonvested restricted stock awards and units granted, weighted-average grant date fair value	$48.66		$36.79	$42.39
Nonvested restricted stock awards and units vested, weighted-average grant date fair value	$41.45		$41.69	$42.47
Nonvested restricted stock awards and units forfeited, weighted-average grant date fair value	$41.90		$42.44	$43.46
Nonvested restricted stock awards and units, weighted-average grant date fair value - ending balance	$43.66		$40.03	$42.86
Employee Stock Purchase Plan [Abstract]	'		'	'
Common share maximum conversion percentage upon vesting of target under multi-performance criteria method one	200.00%		'	'
Common share maximum conversion percentage upon vesting of target under multi-performance criteria method two	200.00%		'	'
Share-based compensation arrangement by share-based payment award fair value assumptions and methdology [Abstract]	'		'	'
Stock price	$47	[1]	'	'
Expected volatility factor	31.30%	[2]	'	'
Risk-free interest rate	0.33%	[3]	'	'
Expected annual dividend yield	0.00%	[4]	'	'
Restricted stock awards and units with multi-performance criteria assumption method	'Monte Carlo simulation model		'	'
Restricted Stock Awards (RSAs) [Member]	'		'	'
Share-based compensation arrangement by share-based payment award [Line Items]	'		'	'
Restricted stock issued	3		'	'
Restricted Stock Units (RSUs) [Member]	'		'	'
Shares	'		'	'
Nonvested restricted stock awards and units - ending balance	1.7		'	'
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		'	'
Dividends payable - total amount paid	16		'	'
Cash dividends for period 9 [Member]	'		'	'
Dividends [Line Items]	'		'	'
Dividends payable - declaration date	28-Feb-14		'	'
Dividends payable - record date	21-Mar-14		'	'
Dividends payable - payment date	11-Apr-14		'	'
Dividends payable - amount per share	$0.22		'	'
Common Stock [Member]	'		'	'
Equity, class of treasury stock [Line Items]	'		'	'
Shares of common stock repurchased	2		1	6
Common stock repurchase - average price paid per share	$45.55		$40	$40.47
Cost of common stock repurchased	$93.30		$40	$242.80
[1]	The stock price is the closing price of our common stock on the date of when all of the key terms and conditions related to the award are known.
[2]	The stock volatility for each grant was determined based on the historical volatility for the Russell 3000 Index and in correlation to our common stock for a period equal to the estimated performance period.
[3]	The risk-free interest rate for periods equal to the performance period is based on the U.S. Treasury yield curve in effect at the date of grant.
[4]	Dividends are reinvested for purposes of calculating total stockholder return. For purposes of the fair value model, the dividend yield is therefore considered to be 0%.

SEGMENT_AND_RELATED_INFORMATIO2

SEGMENT AND RELATED INFORMATION (DETAILS) (USD $)

3 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Jan. 03, 2014

Sep. 27, 2013

Jun. 28, 2013

Mar. 29, 2013

Dec. 28, 2012

Sep. 28, 2012

Jun. 29, 2012

Mar. 30, 2012

Jan. 03, 2014

Dec. 28, 2012

Dec. 30, 2011

segments

Segment additional assets information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Investments in and advances to unconsolidated joint ventures

$245.60

'

'

'

$278.30

'

'

'

$245.60

$278.30

'

Property and equipment, net

608.1

[1],[2]

'

'

'

687.5

[1],[2]

'

'

'

608.1

[1],[2]

687.5

[1],[2]

'

Total assets

8,718

'

'

'

9,261

'

'

'

8,718

9,261

'

Segment additional income statement information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

2,660.70

2,735.50

2,792

2,802.50

2,972.70

2,947.60

2,690.70

2,361.50

10,990.70

10,972.50

9,545

Equity in income (loss) of unconsolidated joint ventures

'

'

'

'

'

'

'

'

93.6

107.6

132.2

URS operating income (loss)

'

'

'

'

'

'

'

'

508.7

[3],[4]

570.7

[3]

473.9

[3]

Operating income (loss)

113.5

179.3

145.4

152.6

171.4

203.6

149.5

161.4

590.8

685.9

251.1

Capital expenditures

'

'

'

'

'

'

'

'

136.4

153.2

81.7

Depreciation and amortization

'

'

'

'

'

'

'

'

264.2

233.6

142.7

Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

2,660.70

2,735.50

2,792

2,802.50

2,972.70

2,947.60

2,690.70

2,361.50

10,990.70

10,972.50

9,545

Segment reporting disclosure (Textuals) [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Number of operating segments

'

'

'

'

'

'

'

'

4

'

'

Goodwill impairment

'

'

'

'

'

'

'

'

'

'

-351.3

United States [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment additional assets information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Property and equipment, net

313.6

[2]

'

'

'

320.4

[2]

'

'

'

313.6

[2]

320.4

[2]

'

International [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment additional assets information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Property and equipment, net

294.5

[2]

'

'

'

367.1

[2]

'

'

'

294.5

[2]

367.1

[2]

'

US Army [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment additional income statement information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

1,375

[5]

1,755

1,692.30

Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

1,375

[5]

1,755

1,692.30

US Army [Member] | Sales [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Percentage of revenues from major customers

'

'

'

'

'

'

'

'

13.00%

[5]

16.00%

18.00%

DOE [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment additional income statement information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

831.2

989.7

1,269

Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

831.2

989.7

1,269

DOE [Member] | Sales [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Percentage of revenues from major customers

'

'

'

'

'

'

'

'

8.00%

9.00%

13.00%

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

'

'

'

'

'

'

'

'

17.00%

11.00%

58.00%

Operating Segments [Member] | United States [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment additional income statement information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

8,136.70

8,640.20

8,329.70

Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

8,136.70

8,640.20

8,329.70

Corporate [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment additional assets information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Property and equipment, net

29.1

'

'

'

26.9

'

'

'

29.1

26.9

'

Total assets

257.7

'

'

'

192.1

'

'

'

257.7

192.1

'

Segment additional income statement information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

URS operating income (loss)

'

'

'

'

'

'

'

'

-77.5

[3],[6]

-99.7

[3],[6]

-79.5

[3],[6]

Operating income (loss)

'

'

'

'

'

'

'

'

-77.5

[6],[7]

-99.7

[6],[7]

-79.5

[6],[7]

Capital expenditures

'

'

'

'

'

'

'

'

12.6

[6]

13.2

[6]

10.9

[6]

Depreciation and amortization

'

'

'

'

'

'

'

'

8.8

[6]

6.6

[6]

6.3

[6]

Inter-segment Eliminations and Other [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment additional income statement information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

-160.2

-162.8

-162.4

Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

-160.2

-162.8

-162.4

Infrastructure and Environment [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment additional assets information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Investments in and advances to unconsolidated joint ventures

8

'

'

'

8.2

'

'

'

8

8.2

'

Segment additional income statement information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Equity in income (loss) of unconsolidated joint ventures

'

'

'

'

'

'

'

'

2.4

4

3.9

Infrastructure and Environment [Member] | US Army [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment additional income statement information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

125.2

[5]

128.4

141.7

Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

125.2

[5]

128.4

141.7

Infrastructure and Environment [Member] | DOE [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment additional income statement information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

4.7

5.6

5.9

Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

4.7

5.6

5.9

Infrastructure and Environment [Member] | Operating Segments [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment additional assets information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Property and equipment, net

135.9

'

'

'

138.7

'

'

'

135.9

138.7

'

Total assets

2,119.50

'

'

'

2,222.10

'

'

'

2,119.50

2,222.10

'

Segment additional income statement information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

3,634.10

3,714.40

3,761

URS operating income (loss)

'

'

'

'

'

'

'

'

209

[3]

213.4

[3]

222

[3]

Operating income (loss)

'

'

'

'

'

'

'

'

210.7

[7]

215.5

[7]

222

[7]

Capital expenditures

'

'

'

'

'

'

'

'

36.9

42.5

51.2

Depreciation and amortization

'

'

'

'

'

'

'

'

50

56

55

Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

3,634.10

3,714.40

3,761

Federal Services [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment additional assets information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Investments in and advances to unconsolidated joint ventures

95.4

'

'

'

111

'

'

'

95.4

111

'

Segment additional income statement information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Equity in income (loss) of unconsolidated joint ventures

'

'

'

'

'

'

'

'

84.9

[8]

83.4

[8]

114.7

[8]

Federal Services [Member] | US Army [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment additional income statement information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

1,100.30

[5]

1,497.80

1,352.40

Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

1,100.30

[5]

1,497.80

1,352.40

Federal Services [Member] | DOE [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment additional income statement information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

821.9

984

1,260.50

Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

821.9

984

1,260.50

Federal Services [Member] | Operating Segments [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment additional assets information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Property and equipment, net

38.8

'

'

'

41.6

'

'

'

38.8

41.6

'

Total assets

2,727.60

'

'

'

2,911.60

'

'

'

2,727.60

2,911.60

'

Segment additional income statement information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

3,157.20

[8]

3,774.90

[8]

4,013.90

[8]

URS operating income (loss)

'

'

'

'

'

'

'

'

307.8

[3],[8]

300.9

[3],[8]

276.8

[3],[8]

Operating income (loss)

'

'

'

'

'

'

'

'

370.3

[7],[8]

378.9

[7],[8]

25.5

[7],[8]

Capital expenditures

'

'

'

'

'

'

'

'

13

[8]

5.9

[8]

5.8

[8]

Depreciation and amortization

'

'

'

'

'

'

'

'

47.8

[8]

45.3

[8]

36.3

[8]

Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

3,157.20

[8]

3,774.90

[8]

4,013.90

[8]

Segment reporting disclosure (Textuals) [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Goodwill impairment

'

'

'

'

'

'

'

'

'

'

-351.3

Energy and Construction [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment additional assets information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Investments in and advances to unconsolidated joint ventures

21.3

'

'

'

19.1

'

'

'

21.3

19.1

'

Segment additional income statement information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Equity in income (loss) of unconsolidated joint ventures

'

'

'

'

'

'

'

'

8.1

16

13.6

Energy and Construction [Member] | US Army [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment additional income statement information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

149.5

[5]

128.8

198.2

Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

149.5

[5]

128.8

198.2

Energy and Construction [Member] | DOE [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment additional income statement information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

4.6

0.1

2.6

Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

4.6

0.1

2.6

Energy and Construction [Member] | Operating Segments [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment additional assets information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Property and equipment, net

52.7

'

'

'

55.4

'

'

'

52.7

55.4

'

Total assets

2,117.60

'

'

'

2,195.90

'

'

'

2,117.60

2,195.90

'

Segment additional income statement information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

2,417.80

2,412.90

1,932.50

URS operating income (loss)

'

'

'

'

'

'

'

'

52.4

[3]

96.7

[3]

54.6

[3]

Operating income (loss)

'

'

'

'

'

'

'

'

71.3

[7]

132.8

[7]

83.1

[7]

Capital expenditures

'

'

'

'

'

'

'

'

16.8

18.4

13.8

Depreciation and amortization

'

'

'

'

'

'

'

'

40.7

49.2

45.1

Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

2,417.80

2,412.90

1,932.50

Oil and Gas [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment additional assets information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Investments in and advances to unconsolidated joint ventures

120.9

'

'

'

140

'

'

'

120.9

140

'

Segment additional income statement information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Equity in income (loss) of unconsolidated joint ventures

'

'

'

'

'

'

'

'

-1.8

[9]

4.2

[9]

'

Oil and Gas [Member] | Operating Segments [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment additional assets information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Property and equipment, net

351.6

'

'

'

424.9

'

'

'

351.6

424.9

'

Total assets

1,495.60

'

'

'

1,739.30

'

'

'

1,495.60

1,739.30

'

Segment additional income statement information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

1,941.80

[9]

1,233.10

[9]

'

URS operating income (loss)

'

'

'

'

'

'

'

'

17

[3],[9]

59.4

[3],[9]

'

Operating income (loss)

'

'

'

'

'

'

'

'

16

[7],[9]

58.4

[7],[9]

'

Capital expenditures

'

'

'

'

'

'

'

'

57.1

[9]

73.2

[9]

'

Depreciation and amortization

'

'

'

'

'

'

'

'

116.9

[9]

76.5

[9]

'

Segment reporting disclosure of entity's reportable segments revenues by major customers [Abstract]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

$1,941.80

[9]

$1,233.10

[9]

'

[1]

B B B B B B B B The unamortized computer software costs were $76.0 million and $71.1 million, respectively, as of January 3, 2014 and December 28, 2012.

[2]

Property and equipment, net is categorized by the location of incorporation of the legal entities.

[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.

[4]

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.

[5]

The U.S. Army includes U.S. Army Corps of Engineers.

[6]

Corporate includes expenses related to corporate functions and acquisition-related expenses.

[7]

The operating income for the year ended December 30, 2011 included a $351.3 million goodwill impairment charge. See Note 9, bGoodwill and Intangible Assets,b for more information.

[8]

The operating results of Apptis have been included in our consolidated results since the acquisition on June 1, 2011.

[9]

The operating results of Flint have been included in our consolidated results since the acquisition on May 14, 2012.

SEGMENT_AND_RELATED_INFORMATIO3

SEGMENT AND RELATED INFORMATION (DETAILS 2) (USD $)

3 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Jan. 03, 2014

Sep. 27, 2013

Jun. 28, 2013

Mar. 29, 2013

Dec. 28, 2012

Sep. 28, 2012

Jun. 29, 2012

Mar. 30, 2012

Jan. 03, 2014

Dec. 28, 2012

Dec. 30, 2011

Segment reporting other significant reconciling item [Line Items]

'

'

'

'

'

'

'

'

'

'

'

URS operating income (loss)

'

'

'

'

'

'

'

'

$508.70

[1],[2]

$570.70

[1]

$473.90

[1]

Noncontrolling interests

26.2

26.6

14.4

14.9

42.8

21.1

25.5

25.8

82.1

115.2

128.5

Goodwill impairment

'

'

'

'

'

'

'

'

'

'

-351.3

Operating income (loss)

113.5

179.3

145.4

152.6

171.4

203.6

149.5

161.4

590.8

685.9

251.1

Corporate [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment reporting other significant reconciling item [Line Items]

'

'

'

'

'

'

'

'

'

'

'

URS operating income (loss)

'

'

'

'

'

'

'

'

-77.5

[1],[3]

-99.7

[1],[3]

-79.5

[1],[3]

Operating income (loss)

'

'

'

'

'

'

'

'

-77.5

[3],[4]

-99.7

[3],[4]

-79.5

[3],[4]

Infrastructure and Environment [Member] | Operating Segments [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment reporting other significant reconciling item [Line Items]

'

'

'

'

'

'

'

'

'

'

'

URS operating income (loss)

'

'

'

'

'

'

'

'

209

[1]

213.4

[1]

222

[1]

Noncontrolling interests

'

'

'

'

'

'

'

'

1.7

2.1

'

Operating income (loss)

'

'

'

'

'

'

'

'

210.7

[4]

215.5

[4]

222

[4]

Federal Services [Member] | Operating Segments [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment reporting other significant reconciling item [Line Items]

'

'

'

'

'

'

'

'

'

'

'

URS operating income (loss)

'

'

'

'

'

'

'

'

307.8

[1],[5]

300.9

[1],[5]

276.8

[1],[5]

Goodwill impairment

'

'

'

'

'

'

'

'

'

'

-351.3

Operating income (loss)

'

'

'

'

'

'

'

'

370.3

[4],[5]

378.9

[4],[5]

25.5

[4],[5]

Energy and Construction [Member] | Operating Segments [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment reporting other significant reconciling item [Line Items]

'

'

'

'

'

'

'

'

'

'

'

URS operating income (loss)

'

'

'

'

'

'

'

'

52.4

[1]

96.7

[1]

54.6

[1]

Noncontrolling interests

'

'

'

'

'

'

'

'

18.9

36.1

28.5

Operating income (loss)

'

'

'

'

'

'

'

'

71.3

[4]

132.8

[4]

83.1

[4]

Oil and Gas [Member] | Operating Segments [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment reporting other significant reconciling item [Line Items]

'

'

'

'

'

'

'

'

'

'

'

URS operating income (loss)

'

'

'

'

'

'

'

'

17

[1],[6]

59.4

[1],[6]

'

Noncontrolling interests

'

'

'

'

'

'

'

'

-1

-1

'

Operating income (loss)

'

'

'

'

'

'

'

'

$16

[4],[6]

$58.40

[4],[6]

'

[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.

[2]

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.

[3]

Corporate includes expenses related to corporate functions and acquisition-related expenses.

[4]

The operating income for the year ended December 30, 2011 included a $351.3 million goodwill impairment charge. See Note 9, bGoodwill and Intangible Assets,b for more information.

[5]

The operating results of Apptis have been included in our consolidated results since the acquisition on June 1, 2011.

[6]

The operating results of Flint have been included in our consolidated results since the acquisition on May 14, 2012.

SEGMENT_AND_RELATED_INFORMATIO4

SEGMENT AND RELATED INFORMATION (DETAILS 3) (USD $)

3 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Jan. 03, 2014

Sep. 27, 2013

Jun. 28, 2013

Mar. 29, 2013

Dec. 28, 2012

Sep. 28, 2012

Jun. 29, 2012

Mar. 30, 2012

Jan. 03, 2014

Dec. 28, 2012

Dec. 30, 2011

Revenues from external customers and long-lived assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Revenues

$2,660.70

$2,735.50

$2,792

$2,802.50

$2,972.70

$2,947.60

$2,690.70

$2,361.50

$10,990.70

$10,972.50

$9,545

Property and equipment, net

608.1

[1],[2]

'

'

'

687.5

[1],[2]

'

'

'

608.1

[1],[2]

687.5

[1],[2]

'

Eliminations [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenues from external customers and long-lived assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

-27.3

-27.7

-30.3

United States [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenues from external customers and long-lived assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Property and equipment, net

313.6

[2]

'

'

'

320.4

[2]

'

'

'

313.6

[2]

320.4

[2]

'

United States [Member] | Operating Segments [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenues from external customers and long-lived assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

8,136.70

8,640.20

8,329.70

International [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenues from external customers and long-lived assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Property and equipment, net

294.5

[2]

'

'

'

367.1

[2]

'

'

'

294.5

[2]

367.1

[2]

'

Canada

'

'

'

'

'

'

'

'

'

'

'

Revenues from external customers and long-lived assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Property and equipment, net

249.9

[2]

'

'

'

313.2

[2]

'

'

'

249.9

[2]

313.2

[2]

'

Canada | Operating Segments [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenues from external customers and long-lived assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

1,879.50

[3]

1,304

[3]

180.3

[3]

Other countries [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenues from external customers and long-lived assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Property and equipment, net

44.6

[2]

'

'

'

53.9

[2]

'

'

'

44.6

[2]

53.9

[2]

'

Other countries [Member] | Operating Segments [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenues from external customers and long-lived assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

$1,001.80

$1,056

$1,065.30

[1]

B B B B B B B B The unamortized computer software costs were $76.0 million and $71.1 million, respectively, as of January 3, 2014 and December 28, 2012.

[2]

Property and equipment, net is categorized by the location of incorporation of the legal entities.

[3]

Revenues from Canada exceeded 10% of our consolidated revenues for the years ended January 3, 2014 and December 28, 2012 due to our acquisition of Flint in fiscal year 2012.

COMMITMENTS_AND_CONTINGENCIES_1

COMMITMENTS AND CONTINGENCIES (DETAILS)

12 Months Ended

3 Months Ended

12 Months Ended

6 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Jan. 03, 2014

Dec. 28, 2012

Dec. 30, 2011

Jan. 03, 2014

Apr. 12, 2013

Jan. 03, 2014

Jan. 03, 2014

Jun. 14, 2013

Jan. 03, 2014

Jan. 03, 2014

Jan. 03, 2014

Aug. 03, 2012

Jan. 03, 2014

Jan. 03, 2014

USD ($)

USD ($)

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

'

'

'

'

'

'

'

'

'

'

'

'

'

35.8

Lease Obligations [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Rental expense

236.7

210

188.5

'

'

'

'

'

'

'

'

'

'

'

Description of operating lease arrangements

'Some of the operating leases are subject to renewal options and escalation based upon property taxes and operating expenses.

'

'

'

'

'

'

'

'

'

'

'

'

'

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 January 17, 2014, the Court of Appeal dismissed the appeal and the fine was not reduced.

'

'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. On December 20, 2013, the District Court dismissed the majority of the lawsuits and the remainder of the outstanding claims are being transferred to the District Court for final judgment of dismissal. WGI Ohio intends to continue to defend these matters vigorously until all claims are dismissed; 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. On December 20, 2013, the District Court dismissed the majority of the lawsuits and the remainder of the outstanding claims are being transferred to the District Court for final judgment of dismissal.

'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. On January 17, 2014, the Court of Appeal dismissed the appeal and the fine was not reduced.

'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 January 3, 2014, WGI Ohio has incurred total project costs of $261.3 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 January 3, 2014, the DOE has approved one of the REAs for $0.9 million and has authorized $31.9 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 January 3, 2014, WGI Ohio has recorded $81.5 million in accounts receivable for project costs incurred to date in excess of the DOE contracted amount that may not be collected unless and until the claims are favorably 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 ICC arbitration award in the District Court of Colorado. On February 3, 2014, the District Court of Colorado entered judgment confirming the ICC arbitration award and denied Washington Group Bolivia’s motion to partially vacate the award. We have accrued an estimated probable loss of $10.5 million related to this matter; however, we expect the loss to 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 ICC arbitration award in the District Court of Colorado. On February 3, 2014, the District Court of Colorado entered judgment confirming the ICC arbitration award and denied Washington Group Bolivia’s motion to partially vacate the award. On October 1, 2013, Washington Group Bolivia filed a cross motion to partially vacate the ICC arbitration award in the District Court of Colorado. On February 3, 2014, the District Court of Colorado entered judgment confirming the ICC arbitration award and denied Washington Group Bolivia’s motion to partially vacate the award.

'

'

'

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

'

'

'

'

'

'

'

'

'

261.3

'

'

'

'

Loss contingency, lawsuits filed, number

'

'

'

'

'

59

'

'

'

'

'

'

'

'

Loss contingency, number of settled and dismissed claims

'

'

'

'

5

'

'

'

'

'

'

'

'

'

Authorized project reimbursements arising from acts of nature

'

'

'

'

'

'

'

'

'

31.9

'

'

'

'

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

81.5

32.6

'

'

'

'

'

'

'

81.5

'

'

'

'

Loss contingency, damages awarded value

'

'

'

'

'

'

'

'

'

'

10.5

'

'

'

Loss contingency, accrual provision

'

'

'

'

'

'

'

'

'

'

10.5

'

'

'

Obligations under non-cancelable operating lease agreements [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

First year

187.1

'

'

'

'

'

'

'

'

'

'

'

'

'

Second year

153.7

'

'

'

'

'

'

'

'

'

'

'

'

'

Third year

123.2

'

'

'

'

'

'

'

'

'

'

'

'

'

Fourth year

92.1

'

'

'

'

'

'

'

'

'

'

'

'

'

Fifth year

70.7

'

'

'

'

'

'

'

'

'

'

'

'

'

Thereafter

115.3

'

'

'

'

'

'

'

'

'

'

'

'

'

Total minimum lease payments

742.1

'

'

'

'

'

'

'

'

'

'

'

'

'

Restructuring Charges [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restructuring costs

'

'

5.5

'

'

'

'

'

'

'

'

'

'

'

Payments for restructuring

'

'

12.9

'

'

'

'

'

'

'

'

'

'

'

Restructuring Reserves [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restructuring reserve

'

'

$3.80

'

'

'

'

'

'

'

'

'

'

'

CONDENSED_CONSOLIDATING_FINANC

CONDENSED CONSOLIDATING FINANCIAL INFORMATION (DETAILS) (USD $)

3 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Jan. 03, 2014

Sep. 27, 2013

Jun. 28, 2013

Mar. 29, 2013

Dec. 28, 2012

Sep. 28, 2012

Jun. 29, 2012

Mar. 30, 2012

Jan. 03, 2014

Dec. 28, 2012

Dec. 30, 2011

Dec. 31, 2010

Jan. 03, 2014

Jan. 03, 2014

Dec. 28, 2012

Mar. 15, 2012

Jan. 03, 2014

Dec. 28, 2012

Mar. 15, 2012

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]

Current assets:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash and cash equivalents

$283.70

'

'

'

$314.50

'

'

'

$283.70

$314.50

$436

'

'

'

'

'

'

'

'

Accounts receivable, including retentions

1,392.60

'

'

'

1,554.80

'

'

'

1,392.60

1,554.80

'

'

'

'

'

'

'

'

'

Costs and accrued earnings in excess of billings on contracts

1,521.50

'

'

'

1,384.30

'

'

'

1,521.50

1,384.30

'

'

'

'

'

'

'

'

'

Less receivable allowances

-65.1

'

'

'

-69.7

'

'

'

-65.1

-69.7

'

'

'

'

'

'

'

'

'

Net accounts receivable

2,849

'

'

'

2,869.40

'

'

'

2,849

2,869.40

'

'

'

'

'

'

'

'

'

Deferred tax assets

35.6

'

'

'

67.6

'

'

'

35.6

67.6

'

'

'

'

'

'

'

'

'

Inventory

49.2

'

'

'

61.5

'

'

'

49.2

61.5

'

'

'

'

'

'

'

'

'

Other current assets

173.2

'

'

'

204.2

'

'

'

173.2

204.2

'

'

'

'

'

'

'

'

'

Total current assets

3,390.70

'

'

'

3,517.20

'

'

'

3,390.70

3,517.20

'

'

'

'

'

'

'

'

'

Investments in and advances to subsidiaries and unconsolidated joint ventures

245.6

'

'

'

278.3

'

'

'

245.6

278.3

'

'

'

'

'

'

'

'

'

Property and equipment, net

608.1

[1],[2]

'

'

'

687.5

[1],[2]

'

'

'

608.1

[1],[2]

687.5

[1],[2]

'

'

'

'

'

'

'

'

'

Intangible assets, net

569.7

'

'

'

692.2

'

'

'

569.7

692.2

522

'

'

'

'

'

'

'

'

Goodwill

3,695.60

'

'

'

3,721.60

'

'

'

3,695.60

3,721.60

3,247.50

[3]

'

'

'

'

'

'

'

'

Other long-term assets

208.3

'

'

'

364.2

'

'

'

208.3

364.2

'

'

'

'

'

'

'

'

'

Total assets

8,718

'

'

'

9,261

'

'

'

8,718

9,261

'

'

'

'

'

'

'

'

'

Current liabilities:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Current portion of long-term debt

44.6

'

'

'

71.8

'

'

'

44.6

71.8

'

'

'

'

'

'

'

'

'

Accounts payable and subcontractors payable, including retentions

688.3

'

'

'

803.5

'

'

'

688.3

803.5

'

'

'

'

'

'

'

'

'

Accrued salaries and employee benefits

507.4

'

'

'

558.8

'

'

'

507.4

558.8

'

'

'

'

'

'

'

'

'

Billings in excess of costs and accrued earnings on contracts

233.1

'

'

'

289.1

'

'

'

233.1

289.1

'

'

'

'

'

'

'

'

'

Other current liabilities

365.2

'

'

'

277.8

'

'

'

365.2

277.8

'

'

'

'

'

'

'

'

'

Total current liabilities

1,838.60

'

'

'

2,001

'

'

'

1,838.60

2,001

'

'

'

'

'

'

'

'

'

Long-term debt

1,666.90

'

'

'

1,992.50

'

'

'

1,666.90

1,992.50

'

'

'

'

'

'

'

'

'

Deferred tax liabilities

444.2

'

'

'

379.9

'

'

'

444.2

379.9

'

'

'

'

'

'

'

'

'

Self-insurance reserves

127.2

'

'

'

129.8

'

'

'

127.2

129.8

'

'

'

'

'

'

'

'

'

Pension and post-retirement benefit obligations

285.7

'

'

'

300.9

'

'

'

285.7

300.9

'

'

'

'

'

'

'

'

'

Other long-term liabilities

128.4

'

'

'

271

'

'

'

128.4

271

'

'

'

'

'

'

'

'

'

Total liabilities

4,491

'

'

'

5,075.10

'

'

'

4,491

5,075.10

'

'

'

'

'

'

'

'

'

Commitments and contingencies

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total URS stockholders' equity

4,081.20

'

'

'

4,044

'

'

'

4,081.20

4,044

'

'

'

'

'

'

'

'

'

Noncontrolling interests

145.8

'

'

'

141.9

'

'

'

145.8

141.9

'

'

'

'

'

'

'

'

'

Total stockholders' equity

4,227

'

'

'

4,185.90

'

'

'

4,227

4,185.90

3,907.30

4,201

'

'

'

'

'

'

'

Total liabilities and stockholders' equity

8,718

'

'

'

9,261

'

'

'

8,718

9,261

'

'

'

'

'

'

'

'

'

Disclosure Condensed Consolidating Statements of Operations [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenues

2,660.70

2,735.50

2,792

2,802.50

2,972.70

2,947.60

2,690.70

2,361.50

10,990.70

10,972.50

9,545

'

'

'

'

'

'

'

'

Cost of revenues

-2,564.10

-2,559

-2,641.60

-2,651.30

-2,810.50

-2,753.30

-2,527.50

-2,203.20

-10,416

-10,294.50

-8,988.80

'

'

'

'

'

'

'

'

General and administrative expenses

'

'

'

'

'

'

'

'

-77.5

-83.6

-79.5

'

'

'

'

'

'

'

'

Acquisition-related expenses

'

'

'

'

'

0.8

[4]

-11.3

[4]

-5.6

[4]

'

-16.1

-1

'

'

'

'

'

'

'

'

Restructuring costs

'

'

'

'

'

'

'

'

'

'

-5.5

'

'

'

'

'

'

'

'

Goodwill impairment

'

'

'

'

'

'

'

'

'

'

-351.3

'

'

'

'

'

'

'

'

Equity in income (loss) of unconsolidated joint ventures

'

'

'

'

'

'

'

'

93.6

107.6

132.2

'

'

'

'

'

'

'

'

Operating income (loss)

113.5

179.3

145.4

152.6

171.4

203.6

149.5

161.4

590.8

685.9

251.1

'

'

'

'

'

'

'

'

Interest expense

'

'

'

'

'

'

'

'

-86.1

-70.7

-22.1

'

'

'

'

'

'

'

'

Other income (expenses)

-3.5

[5]

1.6

[5]

-3.3

[5]

-2.5

[5]

-3.6

[5]

10.8

[5]

-9.2

[5]

2.5

[5]

-7.7

0.5

'

'

'

'

'

'

'

'

'

Income (loss) before income taxes

'

'

'

'

'

'

'

'

497

615.7

229

'

'

'

'

'

'

'

'

Income tax benefit (expense)

-44.3

[6]

-42.3

[6]

-38.9

[6]

-42.2

[6]

-34.7

-66.1

-40.5

-48.6

-167.7

-189.9

-143.4

'

'

'

'

'

'

'

'

Net income (loss) including noncontrolling interests

45.4

115.4

81.7

86.8

113.4

127.8

79.1

105.5

329.3

425.8

85.6

'

'

'

'

'

'

'

'

Noncontrolling interests in income of consolidated subsidiaries

-26.2

-26.6

-14.4

-14.9

-42.8

-21.1

-25.5

-25.8

-82.1

-115.2

-128.5

'

'

'

'

'

'

'

'

Net income (loss) attributable to URS

19.2

88.8

67.3

71.9

70.6

106.7

53.6

79.7

247.2

310.6

-42.9

'

'

'

'

'

'

'

'

Comprehensive income (loss) attributable to URS

'

'

'

'

'

'

'

'

160.1

308.2

-116.8

'

'

'

'

'

'

'

'

Disclosure Condensed Consolidating Statements of Cash Flows [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net cash from operating activities

'

'

'

'

'

'

'

'

614.2

430.2

505.9

'

'

'

'

'

'

'

'

Cash flows from investing activities:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payments for business acquisitions, net of cash acquired

'

'

'

'

'

'

'

'

'

-1,345.70

-282.1

'

'

'

'

'

'

'

'

Proceeds from disposal of property and equipment

'

'

'

'

'

'

'

'

63.7

25.3

14.1

'

'

'

'

'

'

'

'

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

'

'

'

'

'

'

'

'

-0.2

-4.4

-19.6

'

'

'

'

'

'

'

'

Changes in restricted cash

'

'

'

'

'

'

'

'

4.3

3.9

7

'

'

'

'

'

'

'

'

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

'

'

'

'

'

'

'

'

-81

-125.4

-67.5

'

'

'

'

'

'

'

'

Net cash from investing activities

'

'

'

'

'

'

'

'

-13.2

-1,446.60

-348.1

'

'

'

'

'

'

'

'

Cash flows from financing activities:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Borrowings from long-term debt

'

'

'

'

'

'

'

'

'

998.9

700

'

'

'

'

'

'

'

'

Payments on long-term debt

'

'

'

'

'

'

'

'

-220.5

-38

-632.6

'

'

'

'

'

'

'

'

Borrowings from revolving line of credit

'

'

'

'

'

'

'

'

1,028.20

661.6

138.6

'

'

'

'

'

'

'

'

Payments on revolving line of credit

'

'

'

'

'

'

'

'

-1,124.10

-583.6

-115.7

'

'

'

'

'

'

'

'

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

'

'

'

'

'

'

'

'

-26.6

-20.5

-16.4

'

'

'

'

'

'

'

'

Net change in overdrafts

'

'

'

'

'

'

'

'

-54.9

54.5

-18

'

'

'

'

'

'

'

'

Payments on capital lease obligations

'

'

'

'

'

'

'

'

-18

-14.6

-10.9

'

'

'

'

'

'

'

'

Payments of debt issuance costs and other financing activities

'

'

'

'

'

'

'

'

-0.8

-8.7

-3.1

'

'

'

'

'

'

'

'

Proceeds from employee stock purchases and exercises of stock options

'

'

'

'

'

'

'

'

20.2

8.9

11.7

'

'

'

'

'

'

'

'

Distributions to noncontrolling interests

'

'

'

'

'

'

'

'

-79

-83.8

-111.7

'

'

'

'

'

'

'

'

Contributions and advances from noncontrolling interests

'

'

'

'

'

'

'

'

0.5

2.3

6.6

'

'

'

'

'

'

'

'

Dividends paid

'

'

'

'

'

'

'

'

-62.2

-44.7

'

'

'

'

'

'

'

'

'

Repurchases of common stock

'

'

'

'

'

'

'

'

-93.3

-40

-242.8

'

'

'

'

'

'

'

'

Net cash from financing activities

'

'

'

'

'

'

'

'

-630.5

892.3

-294.3

'

'

'

'

'

'

'

'

Net change in cash and cash equivalents

'

'

'

'

'

'

'

'

-29.5

-124.1

-136.5

'

'

'

'

'

'

'

'

Effect of foreign exchange rate changes on cash and cash equivalents

'

'

'

'

'

'

'

'

-1.3

2.6

-1.3

'

'

'

'

'

'

'

'

Cash and cash equivalents at beginning of period

'

'

'

314.5

'

'

'

436

314.5

436

573.8

'

'

'

'

'

'

'

'

Cash and cash equivalents at end of period

283.7

'

'

'

314.5

'

'

'

283.7

314.5

436

'

'

'

'

'

'

'

'

Senior Notes and Canadian Notes [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior Notes, interest rate, stated percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3.85%

'

'

5.00%

Senior Notes, future indebtedness threshold for guarantors

'

'

'

'

'

'

'

'

'

'

'

'

'

100

'

'

100

'

'

Senior Notes (net of discount)

'

'

'

'

'

'

'

'

'

'

'

'

999.1

399.6

399.5

'

599.5

599.5

'

Senior Notes, unamortized discount

'

'

'

'

'

'

'

'

'

'

'

'

$0.90

'

'

'

'

'

'

[1]

B B B B B B B B The unamortized computer software costs were $76.0 million and $71.1 million, respectively, as of January 3, 2014 and December 28, 2012.

[2]

Property and equipment, net is categorized by the location of incorporation of the legal entities.

[3]

Balances as of December 30, 2011 reflect the realignment of our business as further described in Note 16, bSegment and Related Information.b Of the goodwill, $565.4 million related to our Global Management and Operations Services Group was transferred from the Energy & Construction Division to the Federal Services Division.

[4]

For the year ended December 28, 2012, we recorded acquisition-related expenses in connection with our acquisition of Flint. See further discussion in Note 8, bAcquisitions.b

[5]

During fiscal 2013, bOther income (expenses)b represents foreign currency gains (losses) recognized on intercompany financing arrangements. During fiscal 2012, bOther income (expenses)b represents foreign currency gains (losses) recognized on intercompany financing arrangements and foreign currency forward contracts. See further discussion in Note 11, bIndebtedness.b During the fourth quarter of 2013, we recorded income tax expense of $10.0 million related to prior quarters. This included U.S. tax on the sale of Canadian properties of $6.4 million and dividends from a Canadian joint venture of $3.6 million. This amount recorded in the fourth quarter was not material to prior quarters and, accordingly, the prior quarters have not been revised. On an after-tax basis, these items resulted in decreases to net income and diluted EPS of $10.0 million and $0.15, respectively.

[6]

During the fourth quarter of 2013, we recorded income tax expense of $10.0 million related to prior quarters. This included U.S. tax on the sale of Canadian properties of $6.4 million and dividends from a Canadian joint venture of $3.6 million. This amount recorded in the fourth quarter was not material to prior quarters and, accordingly, the prior quarters have not been revised. On an after-tax basis, these items resulted in decreases to net income and diluted EPS of $10.0 million and $0.15, respectively.

OTHER_COMPREHENSIVE_INCOME_LOS2

OTHER COMPREHENSIVE INCOME (LOSS) AND ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (DETAILS) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Jan. 03, 2014		Dec. 28, 2012		Dec. 30, 2011
Other comprehensive income (loss) [Line Items]	'		'		'
Balances	($113.20)		'		'
Amounts reclassified from accumulated other comprehensive income [Abstract]	'		'		'
Prior service costs	19		7.4		4.1
Balances	-200.3		-113.2		'
Other comprehensive income (loss) (Textuals) [Abstract]	'		'		'
Other comprehensive income (loss), defined benefit plans, net unamortized gain (loss) arising during period, before tax	5.5		45.6		80.9
Other comprehensive income (loss), amortization, pension and other postretirement benefit plans, net prior service cost (credit) recognized in net periodic benefit cost, before tax	19		7.4		4.1
Other comprehensive income defined benefit plans effect of changes in foreign currency rate, before tax	3.6		1.7		1.9
Valuation allowance that reduced the tax benefit	17.9		4.9		11.6
Pension and Post-Retirement Adjustments [Member]	'		'		'
Other comprehensive income (loss) [Line Items]	'		'		'
Balances	-135.4	[1],[2]	-108.8	[1],[3]	-46.1	[3]
Amounts reclassified from accumulated other comprehensive income [Abstract]	'		'		'
Prior service costs	2.3	[2],[4]	-3	[1]	-3.2	[3],[4]
Actuarial gains (losses)	16.7	[2],[4]	10.4	[1],[4]	7.3	[3],[4]
Total amounts reclassified from accumulated other comprehensive income, pretax	19	[2]	7.4	[1]	4.1	[3]
Tax benefit (expense)	-24.5	[2],[5]	13.3	[1],[6]	10.7	[3],[7]
Other comprehensive income before reclassification	-11.5	[2]	-47.3	[1]	-77.5	[3]
Net current-period other comprehensive income	-17	[2]	-26.6	[1]	-62.7	[3]
Balances	-152.4	[2]	-135.4	[1],[2]	-108.8	[1],[3]
Other comprehensive income (loss) (Textuals) [Abstract]	'		'		'
Other comprehensive income (loss), amortization, pension and other postretirement benefit plans, net prior service cost (credit) recognized in net periodic benefit cost, before tax	2.3	[2],[4]	-3	[1]	-3.2	[3],[4]
Foreign Currency Translation Adjustments [Member]	'		'		'
Other comprehensive income (loss) [Line Items]	'		'		'
Balances	22.8		-2		9.2
Amounts reclassified from accumulated other comprehensive income [Abstract]	'		'		'
Translation adjustment realized upon liquidation of foreign subsidiaries	1.9	[8]	-0.1	[8]	'
Total amounts reclassified from accumulated other comprehensive income, pretax	1.9		-0.1		'
Tax benefit (expense)	-0.2	[5]	'		'
Other comprehensive income before reclassification	-71.9		24.9		-11.2
Net current-period other comprehensive income	-70.2		24.8		-11.2
Balances	-47.4		22.8		-2
Loss on Derivative Instruments [Member]	'		'		'
Other comprehensive income (loss) [Line Items]	'		'		'
Balances	-0.6		'		'
Amounts reclassified from accumulated other comprehensive income [Abstract]	'		'		'
Reclassification adjustment of prior derivative settlement	0.1		0.1		'
Total amounts reclassified from accumulated other comprehensive income, pretax	0.1		0.1		'
Tax benefit (expense)	'		0.4	[6]	'
Other comprehensive income before reclassification	'		-1.1		'
Net current-period other comprehensive income	0.1		-0.6		'
Balances	-0.5		-0.6		'
Accumulated Other Comprehensive Income (Loss) [Member]	'		'		'
Other comprehensive income (loss) [Line Items]	'		'		'
Balances	-113.2		-110.8		-36.9
Amounts reclassified from accumulated other comprehensive income [Abstract]	'		'		'
Prior service costs	2.3	[4]	-3	[1]	-3.2	[4]
Actuarial gains (losses)	16.7	[4]	10.4	[4]	7.3	[4]
Reclassification adjustment of prior derivative settlement	0.1		0.1		'
Translation adjustment realized upon liquidation of foreign subsidiaries	1.9	[8]	-0.1	[8]	'
Total amounts reclassified from accumulated other comprehensive income, pretax	21		7.4		4.1
Tax benefit (expense)	-24.7	[5]	13.7	[6]	10.7	[7]
Other comprehensive income before reclassification	-83.4		-23.5		-88.7
Net current-period other comprehensive income	-87.1		-2.4		-73.9
Balances	-200.3		-113.2		-110.8
Other comprehensive income (loss) (Textuals) [Abstract]	'		'		'
Other comprehensive income (loss), amortization, pension and other postretirement benefit plans, net prior service cost (credit) recognized in net periodic benefit cost, before tax	$2.30	[4]	($3)	[1]	($3.20)	[4]
[1]	For fiscal year 2012, pension and post-retirement-related adjustments, before-tax, in other comprehensive income included $45.6 million of net loss arising during the year, $7.4 million of amortization of prior service cost and net loss, and $1.7 million of before-tax effect of changes in foreign currency exchange rates.
[2]	For fiscal year 2013, pension and post-retirement-related adjustments, before-tax, in other comprehensive income included $5.5 million of net loss arising during the year, $19.0 million of amortization of prior service cost and net loss, and $3.6 million of before-tax effect of changes in foreign currency exchange rates.
[3]	For fiscal year 2011, pension and post-retirement-related adjustments, before-tax, in other comprehensive income included $80.9 million of net loss arising during the year, $4.1 million of amortization of prior service cost and net loss, and $1.9 million of before-tax effect of changes in foreign currency exchange rates.
[4]	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 Consolidated Statements of Operations. See Note 14, bEmployee Retirement and Post-Retirement Benefit Plans,b for more information.
[5]	The tax benefit has been reduced by a valuation allowance of $17.9 million in 2013.
[6]	The tax benefit has been reduced by a valuation allowance of $4.9 million in 2012.
[7]	The tax benefit has been reduced by a valuation allowance of $11.6 million in 2011.
[8]	This accumulated other comprehensive income component is reclassified into bCost of revenuesb in our Consolidated Statements of Operations.

RECLASSIFICATIONS_OUT_OF_ACCUM

RECLASSIFICATIONS OUT OF ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (DETAILS) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Jan. 03, 2014
Reclassifications out of accumulated other comprehensive income (loss) [Line Items]	'
Balances	($113.20)
Amounts reclassified from accumulated other comprehensive income [Abstract]	'
Reclassification adjustment of prior derivative settlement, net of tax	0.1
Balances	($200.30)

RECEIVABLE_AND_DEFERRED_INCOME2

RECEIVABLE AND DEFERRED INCOME TAX VALUATION ALLOWANCES (DETAILS) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Jan. 03, 2014		Dec. 28, 2012		Dec. 30, 2011
Valuation Allowance [Line Items]	'		'		'
Other	$17.90		$4.90		$11.60
Receivable allowances [Member]	'		'		'
Valuation Allowance [Line Items]	'		'		'
Balance at the Beginning of the Periods	69.7		43.1		42.8
Additions (Charged to Bad Debt Expenses)	7.4		6.6		2.8
Additions (Charged to Other Accounts)	7.7	[1]	27.4	[1]	16.1	[1]
Deductions	-19.7	[2]	-7.4	[2]	-18.6	[2]
Balance at the End of the Periods	65.1		69.7		43.1
Deferred income tax valuation allowance [Member]	'		'		'
Valuation Allowance [Line Items]	'		'		'
Balance at the Beginning of the Periods	137.6		124		104.2
Additions (Charged to Other Accounts)	12.7	[1]	12.3	[1]	23.5	[1]
Deductions	-23.2	[2]	-14.7	[2]	-15.3	[2]
Other	17.9	[3]	16	[3]	11.6	[3]
Balance at the End of the Periods	$145		$137.60		$124
[1]	These additions were primarily charged to revenues or income tax expense.
[2]	Deductions to the deferred income tax valuation allowance were primarily attributed to foreign and state NOL expirations, change in tax rates and the use of federal and state NOLs.
[3]	Other adjustments to the deferred income tax valuation allowance during the year ended December 28, 2012 were attributable to acquired deferred taxes through the Flint acquisition and items charged to other comprehensive income. For the years ended January 3, 2014 and December 30, 2011, other adjustments to the deferred income tax valuation allowance were charged to other comprehensive income.

SELECTED_QUARTERLY_FINANCIAL_D2

SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (DETAILS) (USD $)	3 Months Ended																12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Jan. 03, 2014		Sep. 27, 2013		Jun. 28, 2013		Mar. 29, 2013		Dec. 28, 2012		Sep. 28, 2012		Jun. 29, 2012		Mar. 30, 2012		Jan. 03, 2014		Dec. 28, 2012		Dec. 30, 2011
Selected Quarterly Financial Information (unaudited) [Abstract]	'		'		'		'		'		'		'		'		'		'		'
Revenues	$2,660.70		$2,735.50		$2,792		$2,802.50		$2,972.70		$2,947.60		$2,690.70		$2,361.50		$10,990.70		$10,972.50		$9,545
Cost of revenues	-2,564.10		-2,559		-2,641.60		-2,651.30		-2,810.50		-2,753.30		-2,527.50		-2,203.20		-10,416		-10,294.50		-8,988.80
Acquisition-related expenses	'		'		'		'		'		0.8	[1]	-11.3	[1]	-5.6	[1]	'		-16.1		-1
Restructuring costs	'		'		'		'		'		'		'		'		'		'		-5.5
Goodwill impairment	'		'		'		'		'		'		'		'		'		'		-351.3
Operating income (loss)	113.5		179.3		145.4		152.6		171.4		203.6		149.5		161.4		590.8		685.9		251.1
Other income (expenses)	-3.5	[2]	1.6	[2]	-3.3	[2]	-2.5	[2]	-3.6	[2]	10.8	[2]	-9.2	[2]	2.5	[2]	-7.7		0.5		'
Income tax benefit (expense)	-44.3	[3]	-42.3	[3]	-38.9	[3]	-42.2	[3]	-34.7		-66.1		-40.5		-48.6		-167.7		-189.9		-143.4
Net income (loss) including noncontrolling interests	45.4		115.4		81.7		86.8		113.4		127.8		79.1		105.5		329.3		425.8		85.6
Noncontrolling interests in income of consolidated subsidiaries	-26.2		-26.6		-14.4		-14.9		-42.8		-21.1		-25.5		-25.8		-82.1		-115.2		-128.5
Net income (loss) attributable to URS	19.2		88.8		67.3		71.9		70.6		106.7		53.6		79.7		247.2		310.6		-42.9
Earnings (loss) per share:	'		'		'		'		'		'		'		'		'		'		'
Basic	$0.26		$1.21		$0.91		$0.97		$0.95		$1.43		$0.72		$1.08		$3.35		$4.18		($0.56)
Diluted	$0.26		$1.20		$0.91		$0.96		$0.95		$1.43		$0.72		$1.07		$3.31		$4.17		($0.56)
Weighted-average shares of common stock outstanding:	'		'		'		'		'		'		'		'		'		'		'
Basic	73.6	[4]	73.6		73.8		74.4		74.5		74.5	[4]	74.2		74		73.9	[4],[5]	74.3	[5]	77.3	[5]
Diluted	74.2		73.9		74		74.9		74.6		74.6		74.6		74.3		74.7		74.5		77.3
Selected Quarterly Financial Information (Textuals) [Abstract]	'		'		'		'		'		'		'		'		'		'		'
Goodwill impairment	'		'		'		'		'		'		'		'		'		'		351.3
Goodwill impairment loss net of tax	'		'		'		'		'		'		'		'		'		'		309.4
Effective income tax rate %	'		'		'		'		'		'		'		'		33.70%		30.80%		62.60%
Consolidated Statements of Operations Data [Abstract]	'		'		'		'		'		'		'		'		'		'		'
Income (loss) before income taxes	'		'		'		'		'		'		'		'		497		615.7		229
Operating income (loss)	113.5		179.3		145.4		152.6		171.4		203.6		149.5		161.4		590.8		685.9		251.1
Income tax benefit (expense)	-44.3	[3]	-42.3	[3]	-38.9	[3]	-42.2	[3]	-34.7		-66.1		-40.5		-48.6		-167.7		-189.9		-143.4
Net income (loss) including noncontrolling interests	45.4		115.4		81.7		86.8		113.4		127.8		79.1		105.5		329.3		425.8		85.6
Noncontrolling interests in income of consolidated subsidiaries	-26.2		-26.6		-14.4		-14.9		-42.8		-21.1		-25.5		-25.8		-82.1		-115.2		-128.5
Net income (loss) attributable to URS	19.2		88.8		67.3		71.9		70.6		106.7		53.6		79.7		247.2		310.6		-42.9
Effective Income Tax Rate Reconciliation of Other Reconciling Items [Abstract]	'		'		'		'		'		'		'		'		'		'		'
Effect of tax on the sale of Canadian properties	6.4		'		'		'		'		'		'		'		'		'		'
Effect of tax on dividends received from a joint venture	3.6		'		'		'		'		'		'		'		'		'		'
Effect on net income of other reconciling items	$10		'		'		'		'		'		'		'		'		'		'
Decrease in diluted EPS attributable to other reconciling items	$0.15		'		'		'		'		'		'		'		'		'		'
[1]	For the year ended December 28, 2012, we recorded acquisition-related expenses in connection with our acquisition of Flint. See further discussion in Note 8, bAcquisitions.b
[2]	During fiscal 2013, bOther income (expenses)b represents foreign currency gains (losses) recognized on intercompany financing arrangements. During fiscal 2012, bOther income (expenses)b represents foreign currency gains (losses) recognized on intercompany financing arrangements and foreign currency forward contracts. See further discussion in Note 11, bIndebtedness.b During the fourth quarter of 2013, we recorded income tax expense of $10.0 million related to prior quarters. This included U.S. tax on the sale of Canadian properties of $6.4 million and dividends from a Canadian joint venture of $3.6 million. This amount recorded in the fourth quarter was not material to prior quarters and, accordingly, the prior quarters have not been revised. On an after-tax basis, these items resulted in decreases to net income and diluted EPS of $10.0 million and $0.15, respectively.
[3]	During the fourth quarter of 2013, we recorded income tax expense of $10.0 million related to prior quarters. This included U.S. tax on the sale of Canadian properties of $6.4 million and dividends from a Canadian joint venture of $3.6 million. This amount recorded in the fourth quarter was not material to prior quarters and, accordingly, the prior quarters have not been revised. On an after-tax basis, these items resulted in decreases to net income and diluted EPS of $10.0 million and $0.15, respectively.
[4]	Weighted-average shares of common stock outstanding is net of treasury stock and excludes nonvested restricted stock awards. No dilution was applied to our basic weighted-average shares outstanding for the year ended December 30, 2011, due to a goodwill impairment charge that resulted in a net loss for the year.
[5]	Weighted-average shares of common stock outstanding is net of treasury stock and excludes nonvested restricted stock awards.

SUBSEQUENT_EVENTS_DETAILS

SUBSEQUENT EVENTS (DETAILS) (USD $)	12 Months Ended
	Jan. 03, 2014
Subsequent event [Line Items]	'
Reporting unit percent fair value above carrying value	39.20%
Merger Agreement [Member]	'
Subsequent event [Line Items]	'
Subsequent event description	'On July 11, 2014, we entered into an Agreement and Plan of Merger (the “merger agreement”) with AECOM Technology Corporation (“AECOM”), ACM Mountain I, LLC, a direct wholly-owned subsidiary of AECOM (“Merger Sub”), and ACM Mountain II, LLC, a direct wholly-owned subsidiary of AECOM (“Merger Sub I”). The merger agreement provides for the merger of Merger Sub with and into our company, with our company continuing as the surviving company and a direct wholly-owned subsidiary of AECOM (the “Merger”). Immediately thereafter, as part of a single integrated transaction with the Merger, pursuant to the merger agreement, we will merge with and into Merger Sub I, with Merger Sub I continuing as the surviving company and a direct wholly-owned subsidiary of AECOM. Subject to the terms and conditions of the merger agreement, holders of URS common stock will receive consideration at $58.79 per share (based on the closing price of AECOM common stock on July 25, 2014). Each outstanding share of URS common stock will be exchanged for per share consideration consisting of 0.734 shares of AECOM common stock and $33.00 in cash. URS stockholders may elect to receive cash or stock consideration, subject to proration in the event of oversubscription for cash consideration. The actual value of the merger consideration to be paid at the closing of the merger will depend on the average closing price of AECOM common stock in the five business days prior to closing. Completion of the merger is subject to certain customary conditions, including approval by both the AECOM and URS stockholders, listing of the shares of AECOM common stock to be issued in the merger on the New York Stock Exchange, receipt of required regulatory approvals, effectiveness of AECOM’s registration statement on Form S-4 and receipt of customary opinions related to certain tax matters from the parties’ respective counsels. The financial statements included in this revised Form 10-K do not reflect any adjustments or otherwise give effect to the proposed merger. Based on the implied value of this potential merger to URS stockholders, we performed an interim goodwill impairment test as of July 4, 2014 for all of our seven reporting units. Goodwill impairment reviews involved a two-step process. The first step is a comparison of each reporting unit’s fair value to its carrying value. If the carrying value of the reporting units is higher than its fair value, there is an indication that impairment may exist and the second step must be performed to measure the amount of the impairment. We performed the first step of the analysis to compare the fair values of each reporting unit to its carrying amount. Based on the analysis performed, the fair values of all of our reporting units exceeded their carrying values indicating that no impairment exists, and therefore, the second step of the analysis was not deemed necessary. Within the Energy & Construction operating segment, reporting units Civil Construction and Mining Group, Industrial/Process Group and Power Group fair values exceeded their carrying values by approximately 8%, 6% and 6%, respectively. Our Oil & Gas reporting unit’s fair value exceeded its carrying value by 5%. The remaining three reporting units’ fair values substantially exceeded their carrying values.
Price per share consideration to shareholders	$58.79
Exchange ratio per share for acquiror stock	0.734
Business combination cash per share to shareholders	$33
Merger Agreement [Member] | Civil Construction and Mining Group [Member]	'
Subsequent event [Line Items]	'
Reporting unit percent fair value above carrying value	8.00%
Merger Agreement [Member] | Industrial/Process Group [Member]	'
Subsequent event [Line Items]	'
Reporting unit percent fair value above carrying value	6.00%
Merger Agreement [Member] | Power Group [Member]	'
Subsequent event [Line Items]	'
Reporting unit percent fair value above carrying value	6.00%
Merger Agreement [Member] | Oil and Gas Operating Segment [Member]	'
Subsequent event [Line Items]	'
Reporting unit percent fair value above carrying value	5.00%