| **Intangible Assets (Tables)**                                            | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
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| **Intangible Assets, Net (Excluding Goodwill) [Abstract]**                |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| Intangible assets subject to amortization and not subject to amortization | Intangible assets are summarized below: 2016 2015 GrossCarryingAmount AccumulatedAmortization Net GrossCarryingAmount AccumulatedAmortization Net             (In millions)Customer relationships$1,527 $195 $1,332 $1,718 $203 $1,515Developed technologies244 86 158 253 67 186Contract backlog55 55 — 49 48 1Trade names64 20 44 81 22 59Other40 32 8 37 23 14Total intangible assets$1,930 $388 $1,542 $2,138 $363 $1,775 |
| Future estimated amortization expense for intangible assets               | Future estimated amortization expense for intangible assets is as follows: Total (In millions)Fiscal Years: 2017$1612018148201914420201302021130Thereafter829  Total$1,542                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |

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| - Definition
Intangible assets subject to amortization and not subject to amortization.
+ References
No definition available.
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| - References
No definition available.
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| - Definition
Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275
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