Long-term Customer Financing And Sales Of Receivables (Narrative) (Details) (USD $) In Millions, unless otherwise specified	Sep. 28, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Commitments to provide long-term financing	$ 108	$ 84
Servicing obligations for long-term receivables	391	375
Loans and Finance Receivables [Member]
Debt Instrument [Line Items]
Financing receivables past due over 90 days	$ 9

Financing receivables that are equal to or greater than 90 days past due.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 7A

-URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953401-111524

Name:	us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant