Summary Of Significant Accounting Policies (Policy)	3 Months Ended
Summary Of Significant Accounting Policies (Policy)	Apr. 01, 2012
Summary Of Significant Accounting Policies [Abstract]
Revenue Recognition	Revenue Recognition. We account for revenues and earnings using the percentage-of-completion method. Under this method, contract revenue and profit are recognized as the work progresses, either as the products are produced or as services are rendered. We estimate the profit on a contract as the difference between the total estimated revenue and costs to complete a contract and recognize that profit over the life of the contract. If at any time the estimate of contract profitability indicates an anticipated loss on the contract, we recognize the loss in the quarter it is identified. We review and update our contract estimates regularly. We recognize changes in estimated profit on contracts under the reallocation method. Under the reallocation method, the impact of a revision in estimate is recognized prospectively over the remaining contract term. The net increase in our operating earnings (and earnings per share) from the quarterly impact of revisions in contract estimates totaled $90 ($0.16) and $68 ($0.13) for the three-months periods ended April 3, 2011, and April 1, 2012, respectively. No revisions on any one contract were material to our Consolidated Financial Statements.
Subsequent Events	Subsequent Events. We have evaluated material events and transactions that have occurred after the balance sheet date and concluded that no subsequent events have occurred that require adjustment to or disclosure in this Form 10-Q.

Disclosure of accounting policy for revenue recognition. If the entity has different policies for different types of revenue transactions, the policy for each material type of transaction is generally disclosed. If a sales transaction has multiple element arrangements (for example, delivery of multiple products, services or the rights to use assets) the disclosure may indicate the accounting policy for each unit of accounting as well as how units of accounting are determined and valued. The disclosure may encompass important judgment as to appropriateness of principles related to recognition of revenue. The disclosure also may indicate the entity's treatment of any unearned or deferred revenue that arises from the transaction.

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