Income Taxes (Total Gross Unrecognized Tax Benefits) (Details) (USD $) In Millions	9 Months Ended
Oct. 01, 2011
Income Taxes [Abstract]
January 1, 2011	$ 104
Additions, current year	7
Additions, prior years	8
Reductions, prior years	(16)
Settlements	(34)
October 1, 2011	$ 69

Income taxes

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- Definition

The gross amount of unrecognized tax benefits (tax reductions recognized in financial reports but excluded from tax returns) pertaining to uncertain tax positions taken in tax returns as of the beginning balance sheet date, excluding amounts pertaining to examined tax returns.

+ References

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-Name FASB Interpretation (FIN)

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The gross amount of decreases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns.

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The gross amount of decreases in unrecognized tax benefits resulting from settlements with taxing authorities.

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The gross amount of increases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period, excluding amounts pertaining to examined tax returns.

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The gross amount of increases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns.

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