| **Postretirement Benefit Plans (Tables)**             | 6 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
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| **Compensation and Retirement Disclosure [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| Components of Net Periodic Benefit Cost               | The following tables provide the components of our net periodic benefit income for our defined benefit plans, including defined benefit pension plans and other postretirement defined benefit plans:   Quarter Ended December 30, 2016 Two Quarters Ended December 30, 2016  Pension OtherBenefits Total Pension OtherBenefits Total               (In millions)Net periodic benefit income           Service cost$14 $— $14 $29 $— $29Interest cost46 2 48 92 4 96Expected return on plan assets(85) (4) (89) (170) (8) (178)Amortization of net actuarial loss— — — — — —Amortization of prior service cost— — — — — —Net periodic benefit income$(25) $(2) $(27) $(49) $(4) $(53)Effect of curtailments or settlements— — — — — —Total net periodic benefit income$(25) $(2) $(27) $(49) $(4) $(53)               Quarter Ended January 1, 2016 Two Quarters Ended January 1, 2016  Pension OtherBenefits Total Pension OtherBenefits Total               (In millions)Net periodic benefit income           Service cost$20 $2 $22 $38 $3 $41Interest cost61 3 64 123 7 130Expected return on plan assets(85) (4) (89) (171) (9) (180)Amortization of net actuarial loss— — — — 2 2Amortization of prior service cost— (4) (4) — (7) (7)Net periodic benefit income$(4) $(3) $(7) $(10) $(4) $(14)Effect of curtailments or settlements (1)— (121) (121) — (121) (121)Total net periodic benefit income $(4) $(124) $(128) $(10) $(125) $(135)             (1)  We discontinued certain significantly underfunded post-employment benefit plans effective December 31, 2015. Under GAAP, this resulted in a negative plan amendment and curtailment during the quarter ended January 1, 2016, a settlement as of December 31, 2015, and a net liability reduction of $101 million. |

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| - References
No definition available.
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| - Definition
Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920
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