| **Commitments And Contingencies (Tables)**              | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
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| **Commitments and Contingencies Disclosure [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| Schedule Of Product Warranty Liability                  | Changes in the Company’s product warranty liability during the three and nine months ended October 1, 2016 and October 3, 2015 were as follows (in millions): Three Months Ended Nine Months EndedOctober 1, 2016 October 3, 2015 October 1, 2016 October 3, 2015Balance at beginning of period$25 $29 $31 $35Warranty expense (benefit) recognized4 — 5 (4)Warranty credits issued(4) (1) (11) (3)Balance at end of period$25 $28 $25 $28 |

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| - References
No definition available.
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| - Definition
Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249
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