Basis of Presentation Income Before Income Tax (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended	12 Months Ended
Jun. 28, 2013 Businesses	Jun. 29, 2012	Dec. 30, 2011	Mar. 29, 2013 Businesses
Basis of Presentation [Abstract]
Number of Divestitures in Period	2			3
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest [Abstract]
Gross favorable	$ 17		$ 9
Gross unfavorable	(9)		(28)
Total net adjustments, before taxes and non-controlling interest	8		(19)
Impact on diluted EPS from continuing operations (usd per share)	$ 0.02		$ (0.08)
Unbilled recoverable amounts primarily from governments that are expected to be collected after one year	44			48
Depreciation expense	$ 169	$ 177

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Change in Estimate, Effect of Change on Diluted Earnings Per Share

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No definition available.

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- Definition

Gross Change In Pretax Earnings Due To Change In Estimate, Favorable

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No definition available.

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Gross Change In Pretax Earnings Due To Change In Estimate, Unfavorable

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No definition available.

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- Definition

Net increase (decrease) in pre-tax earnings due to changes in estimated profitability on contracts. Revisions to estimates at completion are reflected in results of operations as a change in accounting estimate in the period in which the facts that give rise to the revision become known to management.

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No definition available.

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- Definition

Represents the number of entities divested during the period.

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- Definition

Amounts included in unbilled accounts receivable, primarily from US and other governments, that are expected to be collected after one year.

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No definition available.

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- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

-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 AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 12

-Paragraph 5

-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 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

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