CONDENSED CONSOLIDATING FINANCIAL INFORMATION (TABLES)

12 Months Ended

Jan. 03, 2014

Condensed financial information of parent company only disclosure [Abstract]

Schedule of condensed balance sheet [Table Text Block]

						CONDENSED CONSOLIDATING BALANCE SHEET
						As of January 3, 2014
(in millions)						Issuer Parent		Issuer Fox LP		Guarantors		Non- Guarantors		Eliminations		Consolidated
ASSETS
Current assets:
	Cash and cash equivalents					$	106.8	$	—	$	20.3	$	204.6	$	(48.0)	$	283.7
	Accounts receivable, including retentions						—		—		793.5		610.7		(11.6)		1,392.6
	Costs and accrued earnings in excess of billings on contracts						—		—		965.2		562.3		(6.0)		1,521.5
	Less receivable allowances						—		—		(29.8)		(35.3)		—		(65.1)
		Net accounts receivable					—		—		1,728.9		1,137.7		(17.6)		2,849.0
	Intercompany accounts receivable						440.1		19.2		2,438.6		464.4		(3,362.3)		—
	Deferred tax assets						3.4		—		42.9		—		(10.7)		35.6
	Inventory						—		—		—		49.2		—		49.2
	Other current assets						38.6		—		54.0		80.6		—		173.2
			Total current assets				588.9		19.2		4,284.7		1,936.5		(3,438.6)		3,390.7
Investments in and advances to subsidiaries and unconsolidated joint ventures							5,731.3		52.3		1,787.6		192.4		(7,518.0)		245.6
Property and equipment, net							29.1		—		155.4		423.6		—		608.1
Intangible assets, net							0.2		—		187.8		381.7		—		569.7
Goodwill							—		—		2,029.1		1,666.5		—		3,695.6
Other long-term assets							18.9		—		103.6		89.0		(3.2)		208.3
					Total assets	$	6,368.4	$	71.5	$	8,548.2	$	4,689.7	$	(10,959.8)	$	8,718.0
LIABILITIES AND EQUITY
Current liabilities:
	Current portion of long-term debt					$	1.7	$	—	$	10.7	$	32.2	$	—	$	44.6
	Accounts payable and subcontractors payable, including retentions						3.2		—		411.6		340.8		(67.3)		688.3
	Accrued salaries and employee benefits						33.6		—		338.7		135.1		—		507.4
	Billings in excess of costs and accrued earnings on contracts						—		—		124.6		108.5		—		233.1
	Intercompany accounts payable						1,951.8		—		1,094.0		316.5		(3,362.3)		—
	Short-term intercompany notes payable						66.0		—		20.7		189.5		(276.2)		—
	Other current liabilities						50.8		9.7		270.4		44.5		(10.2)		365.2
			Total current liabilities				2,107.1		9.7		2,270.7		1,167.1		(3,716.0)		1,838.6
Long-term debt							907.0		699.6		17.0		43.3		—		1,666.9
Deferred tax liabilities							—		—		370.9		76.5		(3.2)		444.2
Self-insurance reserves							—		—		11.3		115.9		—		127.2
Pension and post-retirement benefit obligations							—		—		124.4		161.3		—		285.7
Long-term intercompany notes payable							—		—		563.6		1,263.0		(1,826.6)		—
Other long-term liabilities							2.7		—		88.7		37.0		—		128.4
				Total liabilities			3,016.8		709.3		3,446.6		2,864.1		(5,545.8)		4,491.0
URS stockholders' equity							4,081.2		19.0		5,731.3		1,766.5		(7,516.8)		4,081.2
Intercompany notes receivable							(729.6)		(656.8)		(629.7)		(86.7)		2,102.8		—
			Total URS stockholders' equity				3,351.6		(637.8)		5,101.6		1,679.8		(5,414.0)		4,081.2
Noncontrolling interests							—		—		—		145.8		—		145.8
				Total stockholders' equity			3,351.6		(637.8)		5,101.6		1,825.6		(5,414.0)		4,227.0
					Total liabilities and stockholders' equity	$	6,368.4	$	71.5	$	8,548.2	$	4,689.7	$	(10,959.8)	$	8,718.0

						CONDENSED CONSOLIDATING BALANCE SHEET
						As of December 28, 2012
(in millions)						Issuer Parent		Issuer Fox LP		Guarantors		Non- Guarantors		Eliminations		Consolidated
ASSETS
Current assets:
	Cash and cash equivalents					$	14.4	$	—	$	16.3	$	285.4	$	(1.6)	$	314.5
	Accounts receivable, including retentions						—		—		771.3		811.8		(28.3)		1,554.8
	Costs and accrued earnings in excess of billings on contracts						—		—		876.9		515.7		(8.3)		1,384.3
	Less receivable allowances						—		—		(29.1)		(40.6)		—		(69.7)
		Net accounts receivable					—		—		1,619.1		1,286.9		(36.6)		2,869.4
	Intercompany accounts receivable						1,793.2		22.4		3,933.1		1,269.0		(7,017.7)		—
	Deferred tax assets						6.8		—		60.3		0.5		—		67.6
	Inventory						—		—		5.5		56.0		—		61.5
	Other current assets						38.2		—		65.5		111.3		(10.8)		204.2
			Total current assets				1,852.6		22.4		5,699.8		3,009.1		(7,066.7)		3,517.2
Investments in and advances to subsidiaries and unconsolidated joint ventures							5,823.5		20.7		2,036.3		242.2		(7,844.4)		278.3
Property and equipment, net							26.9		—		159.7		500.9		—		687.5
Intangible assets, net							0.2		—		223.3		468.7		—		692.2
Goodwill							—		—		2,029.1		1,692.5		—		3,721.6
Other long-term assets							22.3		—		231.3		115.1		(4.5)		364.2
					Total assets	$	7,725.5	$	43.1	$	10,379.5	$	6,028.5	$	(14,915.6)	$	9,261.0
LIABILITIES AND EQUITY
Current liabilities:
	Current portion of long-term debt					$	18.9	$	—	$	10.0	$	42.9	$	—	$	71.8
	Accounts payable and subcontractors payable, including retentions						4.2		—		382.7		454.8		(38.2)		803.5
	Accrued salaries and employee benefits						41.0		—		362.7		155.1		—		558.8
	Billings in excess of costs and accrued earnings on contracts						—		—		146.3		143.0		(0.2)		289.1
	Intercompany accounts payable						3,165.7		14.7		2,793.4		1,043.9		(7,017.7)		—
	Short-term intercompany notes payable						14.3		—		20.0		21.6		(55.9)		—
	Other current liabilities						59.5		8.6		146.2		78.0		(14.5)		277.8
			Total current liabilities				3,303.6		23.3		3,861.3		1,939.3		(7,126.5)		2,001.0
Long-term debt							952.2		699.6		16.9		323.8		—		1,992.5
Deferred tax liabilities							—		—		299.1		85.6		(4.8)		379.9
Self-insurance reserves							—		—		18.3		111.5		—		129.8
Pension and post-retirement benefit obligations							—		—		185.4		115.5		—		300.9
Long-term intercompany notes payable							—		—		561.7		1,265.4		(1,827.1)		—
Other long-term liabilities							2.8		—		197.1		71.1		—		271.0
				Total liabilities			4,258.6		722.9		5,139.8		3,912.2		(8,958.4)		5,075.1
URS stockholders' equity							4,044.0		8.0		5,823.5		2,008.7		(7,840.2)		4,044.0
Intercompany notes receivable							(577.1)		(687.8)		(583.8)		(34.3)		1,883.0		—
			Total URS stockholders' equity				3,466.9		(679.8)		5,239.7		1,974.4		(5,957.2)		4,044.0
Noncontrolling interests							—		—		—		141.9		—		141.9
				Total stockholders' equity			3,466.9		(679.8)		5,239.7		2,116.3		(5,957.2)		4,185.9
					Total liabilities and stockholders' equity	$	7,725.5	$	43.1	$	10,379.5	$	6,028.5	$	(14,915.6)	$	9,261.0

Schedule of condensed income statement [Table Text Block]

			CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS
			For the Year Ended January 3, 2014
(in millions)			Issuer Parent		Issuer Fox LP		Guarantors		Non- Guarantors		Eliminations		Consolidated
Revenues			$	—	$	—	$	6,519.7	$	4,770.0	$	(299.0)	$	10,990.7
Cost of revenues				—		—		(6,097.0)		(4,618.0)		299.0		(10,416.0)
General and administrative expenses				(79.5)		—		—		2.0		—		(77.5)
Equity in income (loss) in subsidiaries				220.2		31.4		43.7		(20.5)		(274.8)		—
Equity in income of unconsolidated joint ventures				—		—		9.4		84.2		—		93.6
Intercompany royalty and general and administrative charges				145.6		—		(119.8)		(25.8)		—		—
	Operating income (loss)			286.3		31.4		356.0		191.9		(274.8)		590.8
Interest expense				(33.8)		(36.5)		(0.9)		(14.9)		—		(86.1)
Intercompany interest income				10.1		3.7		36.9		1.5		(52.2)		—
Intercompany interest expense				(1.2)		—		(10.3)		(40.7)		52.2		—
Other income (expenses)				—		—		—		(7.7)		—		(7.7)
	Income (loss) before income taxes			261.4		(1.4)		381.7		130.1		(274.8)		497.0
Income tax benefit (expense)				(14.2)		12.3		(161.5)		(4.3)		—		(167.7)
	Net income (loss) including noncontrolling interests			247.2		10.9		220.2		125.8		(274.8)		329.3
Noncontrolling interests in income of consolidated subsidiaries				—		—		—		(82.1)		—		(82.1)
		Net income (loss) attributable to URS	$	247.2	$	10.9	$	220.2	$	43.7	$	(274.8)	$	247.2
		Comprehensive income (loss) attributable to URS	$	160.1	$	11.0	$	158.6	$	(75.4)	$	(94.2)	$	160.1

			For the Year Ended December 28, 2012
(in millions)			Issuer Parent		Issuer Fox LP		Guarantors		Non- Guarantors		Eliminations		Consolidated
Revenues			$	—	$	—	$	6,713.8	$	4,420.9	$	(162.2)	$	10,972.5
Cost of revenues				—		—		(6,305.0)		(4,151.7)		162.2		(10,294.5)
General and administrative expenses				(83.2)		—		—		(0.4)		—		(83.6)
Acquisition-related expenses				(6.7)		—		—		(9.4)		—		(16.1)
Equity in income (loss) in subsidiaries				297.8		20.7		149.6		(12.7)		(455.4)		—
Equity in income of unconsolidated joint ventures				—		—		21.5		86.1		—		107.6
Intercompany royalty and general and administrative charges				140.6		—		(122.3)		(18.3)		—		—
	Operating income (loss)			348.5		20.7		457.6		314.5		(455.4)		685.9
Interest expense				(36.2)		(22.9)		(0.8)		(10.8)		—		(70.7)
Intercompany interest income				7.8		2.6		23.0		2.0		(35.4)		—
Intercompany interest expense				(1.4)		—		(7.3)		(26.7)		35.4		—
Other income (expenses)				(0.3)		—		—		0.8		—		0.5
	Income (loss) before income taxes			318.4		0.4		472.5		279.8		(455.4)		615.7
Income tax benefit (expense)				(7.8)		7.6		(174.7)		(15.0)		—		(189.9)
	Net income (loss) including noncontrolling interests			310.6		8.0		297.8		264.8		(455.4)		425.8
Noncontrolling interests in income of consolidated subsidiaries				—		—		—		(115.2)		—		(115.2)
		Net income (loss) attributable to URS	$	310.6	$	8.0	$	297.8	$	149.6	$	(455.4)	$	310.6
		Comprehensive income (loss) attributable to URS	$	308.2	$	8.0	$	282.5	$	170.8	$	(461.3)	$	308.2

			CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS
			For the Year Ended December 30, 2011
(in millions)			Issuer Parent		Issuer Fox LP		Guarantors		Non- Guarantors		Eliminations		Consolidated
Revenues			$	—	$	—	$	6,924.6	$	3,125.9	$	(505.5)	$	9,545.0
Cost of revenues				—		—		(6,556.0)		(2,938.3)		505.5		(8,988.8)
General and administrative expenses				(81.2)		—		—		1.7		—		(79.5)
Acquisition-related expenses				—		—		(1.0)		—		—		(1.0)
Restructuring costs				—		—		—		(5.5)		—		(5.5)
Goodwill impairment				—		—		(351.3)		—		—		(351.3)
Equity in income (loss) in subsidiaries				(64.7)		—		145.4		—		(80.7)		—
Equity in income of unconsolidated joint ventures				—		—		8.6		123.6		—		132.2
Intercompany royalty and general and administrative charges				136.9		—		(122.6)		(14.3)		—		—
	Operating income (loss)			(9.0)		—		47.7		293.1		(80.7)		251.1
Interest expense				(20.9)		—		(0.6)		(0.6)		—		(22.1)
Intercompany interest income				2.9		—		1.7		1.7		(6.3)		—
Intercompany interest expense				(0.8)		—		(0.4)		(5.1)		6.3		—
	Income (loss) before income taxes			(27.8)		—		48.4		289.1		(80.7)		229.0
Income tax benefit (expense)				(15.1)		—		(113.1)		(15.2)		—		(143.4)
	Net income (loss) including noncontrolling interests			(42.9)		—		(64.7)		273.9		(80.7)		85.6
Noncontrolling interests in income of consolidated subsidiaries				—		—		—		(128.5)		—		(128.5)
		Net income (loss) attributable to URS	$	(42.9)	$	—	$	(64.7)	$	145.4	$	(80.7)	$	(42.9)
		Comprehensive income (loss) attributable to URS	$	(116.8)	$	—	$	(150.2)	$	88.9	$	61.3	$	(116.8)

Schedule of condensed cash flow statement [Table Text Block]

		CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
		For the Year Ended January 3, 2014
(in millions)		Issuer Parent		Issuer Fox LP		Guarantors		Non- Guarantors		Eliminations		Consolidated
Net cash from operating activities		$	170.0	$	(19.4)	$	431.6	$	80.0	$	(48.0)	$	614.2
Cash flows from investing activities:
	Proceeds from disposal of property and equipment		—		—		4.8		58.9		—		63.7
	Investments in unconsolidated joint ventures		—		—		(0.2)		—		—		(0.2)
	Changes in restricted cash		—		—		—		4.3		—		4.3
	Capital expenditures, less equipment purchased through capital leases and equipment notes		(8.3)		—		(30.4)		(42.3)		—		(81.0)
	Investment in intercompany notes receivable		(150.5)		—		(17.4)		—		167.9		—
	Receipts from intercompany notes receivable		—		31.0		—		—		(31.0)		—
	Other intercompany investing activities		930.0		—		902.6		481.9		(2,314.5)		—
Net cash from investing activities			771.2		31.0		859.4		502.8		(2,177.6)		(13.2)
Cash flows from financing activities:
	Payments on long-term debt		(50.0)		—		(4.4)		(166.1)		—		(220.5)
	Borrowings from revolving line of credit		931.6		—		—		96.6		—		1,028.2
	Payments on revolving line of credit		(931.6)		—		—		(192.5)		—		(1,124.1)
	Net payments under foreign lines of credit and short-term notes		(16.6)		—		(0.2)		(9.8)		—		(26.6)
	Net change in overdrafts		—		—		(50.5)		(6.0)		1.6		(54.9)
	Payments on capital lease obligations		(0.9)		—		(4.7)		(12.4)		—		(18.0)
	Payments of debt issuance costs and other financing activities		(0.8)		—		—		—		—		(0.8)
	Proceeds from employee stock purchases and exercises of stock options		20.2		—		—		—		—		20.2
	Distributions to noncontrolling interests		—		—		—		(79.0)		—		(79.0)
	Contributions and advances from noncontrolling interests		—		—		—		0.5		—		0.5
	Dividends paid		(62.2)		—		—		—		—		(62.2)
	Repurchases of common stock		(93.3)		—		—		—		—		(93.3)
	Intercompany notes borrowings		—		—		—		167.9		(167.9)		—
	Intercompany notes repayments		—		—		—		(31.0)		31.0		—
	Other intercompany financing activities		(645.2)		(11.6)		(1,227.2)		(430.5)		2,314.5		—
Net cash from financing activities			(848.8)		(11.6)		(1,287.0)		(662.3)		2,179.2		(630.5)
Net change in cash and cash equivalents			92.4		—		4.0		(79.5)		(46.4)		(29.5)
Effect of foreign exchange rate changes on cash and cash equivalents			—		—		—		(1.3)		—		(1.3)
Cash and cash equivalents at beginning of period			14.4		—		16.3		285.4		(1.6)		314.5
Cash and cash equivalents at end of period		$	106.8	$	—	$	20.3	$	204.6	$	(48.0)	$	283.7

		CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
		For the Year Ended December 28, 2012
(in millions)		Issuer Parent		Issuer Fox LP		Guarantors		Non- Guarantors		Eliminations		Consolidated
Net cash from operating activities		$	31.2	$	1.6	$	23.4	$	297.3	$	76.7	$	430.2
Cash flows from investing activities:
	Payments for business acquisitions, net of cash acquired		—		—		—		(1,345.7)		—		(1,345.7)
	Proceeds from disposal of property and equipment		—		—		—		25.3		—		25.3
	Payments in settlement of foreign currency forward contracts		(1,260.6)		—		—		—		—		(1,260.6)
	Receipts in settlement of foreign currency forward contracts		1,260.3		—		—		—		—		1,260.3
	Investments in unconsolidated joint ventures		—		—		(4.3)		(0.1)		—		(4.4)
	Changes in restricted cash		—		—		—		3.9		—		3.9
	Capital expenditures, less equipment purchased through capital leases and equipment notes		(11.4)		—		(34.6)		(79.4)		—		(125.4)
	Dividends received		—		—		0.1		—		(0.1)		—
	Investments in intercompany notes receivable		(570.4)		(800.0)		(555.0)		—		1,925.4		—
	Receipts from intercompany notes receivable		97.8		113.1		—		30.0		(240.9)		—
	Other intercompany investing activities		1,161.0		(14.3)		1,435.2		270.6		(2,852.5)		—
Net cash from investing activities			676.7		(701.2)		841.4		(1,095.4)		(1,168.1)		(1,446.6)
Cash flows from financing activities:
	Borrowings from long-term debt		299.3		800.0		—		—		(100.4)		998.9
	Payments on long-term debt		(30.0)		(100.4)		(5.7)		(2.3)		100.4		(38.0)
	Borrowings from revolving line of credit		560.0		—		—		101.6		—		661.6
	Payments on revolving line of credit		(583.6)		—		—		—		—		(583.6)
	Net payments under foreign lines of credit and short-term notes		(0.8)		—		(0.2)		(19.5)		—		(20.5)
	Net change in overdrafts		—		—		50.1		6.0		(1.6)		54.5
	Payments on capital lease obligations		(0.8)		—		(4.9)		(8.9)		—		(14.6)
	Payments of debt issuance costs and other financing activities		(8.7)		—		—		—		—		(8.7)
	Proceeds from employee stock purchases and exercises of stock options		8.9		—		—		—		—		8.9
	Distributions to noncontrolling interests		—		—		—		(83.8)		—		(83.8)
	Contributions and advances from noncontrolling interests		—		—		—		2.3		—		2.3
	Dividends paid		(44.7)		—		—		(0.1)		0.1		(44.7)
	Repurchases of common stock		(40.0)		—		—		—		—		(40.0)
	Intercompany notes borrowings		—		—		555.0		1,370.4		(1,925.4)		—
	Intercompany notes repayments		(30.0)		—		—		(210.9)		240.9		—
	Other intercompany financing activities		(1,017.0)		—		(1,467.2)		(368.3)		2,852.5		—
Net cash from financing activities			(887.4)		699.6		(872.9)		786.5		1,166.5		892.3
Net change in cash and cash equivalents			(179.5)		0.0		(8.1)		(11.6)		75.1		(124.1)
Effect of foreign exchange rate changes on cash and cash equivalents			—		—		—		2.6		—		2.6
Cash and cash equivalents at beginning of period			193.9		—		24.4		294.4		(76.7)		436.0
Cash and cash equivalents at end of period		$	14.4	$	0.0	$	16.3	$	285.4	$	(1.6)	$	314.5

		CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
		For the Year Ended December 30, 2011
(in millions)		Issuer Parent		Issuer Fox LP		Guarantors		Non- Guarantors		Eliminations		Consolidated
Net cash from operating activities		$	(132.1)	$	—	$	478.2	$	236.5	$	(76.7)	$	505.9
Cash flows from investing activities:
	Payments for business acquisitions, net of cash acquired		—		—		(298.4)		16.3		—		(282.1)
	Proceeds from disposal of property and equipment		—		—		3.8		10.3		—		14.1
	Investments in unconsolidated joint ventures		—		—		(19.5)		(0.1)		—		(19.6)
	Changes in restricted cash		—		—		—		7.0		—		7.0
	Capital expenditures, less equipment purchased through capital leases and equipment notes		(8.6)		—		(49.3)		(9.6)		—		(67.5)
	Dividends received		—		—		18.1		—		(18.1)		—
	Investments in intercompany notes receivable		(26.0)		—		—		(44.9)		70.9		—
	Other intercompany investing activities		60.3		—		(317.1)		(419.0)		675.8		—
Net cash from investing activities			25.7		—		(662.4)		(440.0)		728.6		(348.1)
Cash flows from financing activities:
	Borrowings from long-term debt		700.0		—		—		—		—		700.0
	Payments on long-term debt		(625.0)		—		(7.3)		(0.3)		—		(632.6)
	Borrowings from revolving line of credit		138.6		—		—		—		—		138.6
	Payments on revolving line of credit		(115.7)		—		—		—		—		(115.7)
	Net payments under foreign lines of credit and short-term notes		(0.6)		—		(1.4)		(14.4)		—		(16.4)
	Net change in overdrafts		—		—		(97.2)		0.4		78.8		(18.0)
	Payments on capital lease obligations		(0.5)		—		(6.1)		(4.3)		—		(10.9)
	Payments of debt issuance costs and other financing activities		(3.1)		—		—		—		—		(3.1)
	Proceeds from employee stock purchases and exercises of stock options		11.7		—		—		—		—		11.7
	Distributions to noncontrolling interests		—		—		—		(111.7)		—		(111.7)
	Contributions and advances from noncontrolling interests		—		—		(0.2)		6.8		—		6.6
	Dividends paid		—		—		—		(18.1)		18.1		—
	Repurchases of common stock		(242.8)		—		—		—		—		(242.8)
	Intercompany notes borrowings		44.2		—		0.7		26.0		(70.9)		—
	Other intercompany financing activities		8.5		—		292.1		375.2		(675.8)		—
Net cash from financing activities			(84.7)		—		180.6		259.6		(649.8)		(294.3)
Net change in cash and cash equivalents			(191.1)		—		(3.6)		56.1		2.1		(136.5)
Effect of foreign exchange rate changes on cash and cash equivalents			—		—		—		(1.3)		—		(1.3)
Cash and cash equivalents at beginning of period			385.0		—		28.0		239.6		(78.8)		573.8
Cash and cash equivalents at end of period		$	193.9	$	—	$	24.4	$	294.4	$	(76.7)	$	436.0