XML 111 R26.htm IDEA: XBRL DOCUMENT v2.3.0.15

Significant Accounting Policies (Tables)

12 Months Ended

Sep. 30, 2011

Significant Accounting Policies

Pass-Through Costs Included In Revenues

		2011				2010				2009
Pass-through costs included in revenues		$	2,118.5			$	2,723.3			$	4,017.0

Schedule Of Acquired Intangible Assets

		Customer Relationships, Contracts, and Backlog				Developed Technology				Trade Names				Other				Total
Balances, September 26, 2008		$	54,250			$	—			$	2,789			$	2,864			$	59,903
Acquisitions			7,173				—				478				87				7,738
Amortization			(6,416	)			—				(1,674	)			(630	)			(8,720	)
Foreign currency translation			(1,332	)			—				(85	)			(45	)			(1,462	)
Balances, October 2, 2009			53,675				—				1,508				2,276				57,459
Acquisitions			50,600				—				2,400				1,100				54,100
Amortization			(8,619	)			—				(1,851	)			(736	)			(11,206	)
Foreign currency translation			(178	)			—				(5	)			(125	)			(308	)
Balances, October 1, 2010			95,478				—				2,052				2,515				100,045
Acquisitions			155,512				23,000				2,744				2,542				183,798
Amortization			(21,239	)			(1,023	)			(1,214	)			(1,225	)			(24,701	)
Foreign currency translation			(13	)			—				(109	)			(14	)			(136	)
Balances, September 30, 2011		$	229,738			$	21,977			$	3,473			$	3,818			$	259,006
Estimated remaining useful lives (years)			1- 14				15				1- 20				1- 8

Fair Value Of Option Grant Date Award

		Awards Made to Employees												Awards Made to Directors
		2011				2010				2009				2011				2010				2009
Dividend yield			0	%			0	%			0	%			0	%			0	%			0	%
Expected volatility			41.54	%			43.12	%			45.42	%			41.97	%			40.78	%			47.62	%
Risk-free interest rate			2.00	%			2.54	%			2.94				2.40	%			2.85	%			2.44
Expected term of options (in years)			5.82				6.14				6.25				5.82				6.29				6.29

Fair Value Of Restricted Stock Unit Grant Date Awards

		2011
Dividend yield			0	%
Expected volatility			46.67	%
Risk-free interest rate			0.83	%
Expected term (in years)			3.0

X

- Definition

Schedule Of Fair Value Of Option Grant Date Awards [Table Text Block]

+ Details

Name:	jec_ScheduleOfFairValueOfOptionGrantDateAwardsTableTextBlock
Namespace Prefix:	jec
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Schedule Of Fair Value Of Restricted Stock Units Grant Date Awards [Table Text Block]

+ Details

Name:	jec_ScheduleOfFairValueOfRestrictedStockUnitsGrantDateAwardsTableTextBlock
Namespace Prefix:	jec
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Schedule Of Pass Through Costs Included In Revenues [Table Text Block]

+ Details

Name:	jec_ScheduleOfPassThroughCostsIncludedInRevenuesTableTextBlock
Namespace Prefix:	jec
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract
Namespace Prefix:	us-gaap
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the characteristics, including initial carrying value, residual amount, weighted average useful life, of finite-lived intangible assets acquired during the period by major class. A major class is composed of intangible assets that can be grouped together because they are similar, either by nature or by their use in the operations of the company.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 44

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16265-109275

+ Details

Name:	us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetsByMajorClassTextBlock
Namespace Prefix:	us-gaap
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration