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Postretirement Benefit Plans (Tables) | 6 Months Ended
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Dec. 29, 2017
Retirement Benefits [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 29, 2017 |  | Two Quarters Ended December 29, 2017
|  | Pension |  | Other Benefits |  | Total |  | Pension |  | Other Benefits |  | Total
|  | (In millions)
Net periodic benefit income |  |  |  |  |  |  |  |  |  |  |
Service cost | $ | 9 |  |  | $ | 1 |  |  | $ | 10 |  |  | $ | 19 |  |  | $ | 1 |  |  | $ | 20 |
Interest cost | 49 |  |  | 2 |  |  | 51 |  |  | 97 |  |  | 4 |  |  | 101 |
Expected return on plan assets | (92 | ) |  | (4 | ) |  | (96 | ) |  | (184 | ) |  | (8 | ) |  | (192 | )
Amortization of net actuarial loss | — |  |  | (1 | ) |  | (1 | ) |  | — |  |  | (1 | ) |  | (1 | )
Total net periodic benefit income | $ | (34 | ) |  | $ | (2 | ) |  | $ | (36 | ) |  | $ | (68 | ) |  | $ | (4 | ) |  | $ | (72 | )
|  | Quarter Ended December 30, 2016 |  | Two Quarters Ended December 30, 2016
|  | Pension |  | Other Benefits |  | Total |  | Pension |  | Other Benefits |  | Total
| (In millions)
Net periodic benefit income |  |  |  |  |  |  |  |  |  |  |
Service cost(1) | $ | 14 |  |  | $ | — |  |  | $ | 14 |  |  | $ | 29 |  |  | $ | — |  |  | $ | 29 |
Interest cost | 46 |  |  | 2 |  |  | 48 |  |  | 92 |  |  | 4 |  |  | 96 |
Expected return on plan assets | (85 | ) |  | (4 | ) |  | (89 | ) |  | (170 | ) |  | (8 | ) |  | (178 | )
Total net periodic benefit income | $ | (25 | ) |  | $ | (2 | ) |  | $ | (27 | ) |  | $ | (49 | ) |  | $ | (4 | ) |  | $ | (53 | )
(1) | $1 million of the service cost component of net periodic benefit income is included as a component of the “Discontinued operations, net of income taxes” line item in our Condensed Consolidated Statement of Income (Unaudited) for the two quarters ended December 30, 2016.

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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=82843861&loc=d3e1928-114920 + Details
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