Derivative Instruments and Fair Value Measurements (Narrative) (Details) (USD $) In Millions, unless otherwise specified	Oct. 01, 2011
Derivative Instruments and Fair Value Measurements [Abstract]
Fair value of derivative instruments with credit-risk-related contingent features in a liability position	$ 27
Collateral required to be posted	$ 27
Concentration of credit risk, percentage	28.00%

The aggregate fair value of additional assets that would be required to be posted as collateral for derivative instruments with credit-risk-related contingent features if the credit-risk-related contingent features were triggered at the end of the reporting period.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 44D

-Subparagraph c

Name:	us-gaap_AdditionalCollateralAggregateFairValue
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant