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Pension and Other Post-Retirement Benefit Plans - Defined Benefit Pension Plans' Major Asset Categories and Their Associated Fair Values (Details) - USD ($) $ in Millions | Jun. 30, 2023 | Jul. 01, 2022
--- | --- | ---
Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments at fair value | $ 0 | $ 0
Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments at fair value | 155 | 158
Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments at fair value | 0 | 0
Net asset value |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments at fair value | 185 | 189
Equity commingled/mutual funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, fair value of plan assets | 66 | 63
Equity commingled/mutual funds | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, fair value of plan assets | 0 | 0
Equity commingled/mutual funds | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, fair value of plan assets | 66 | 63
Equity commingled/mutual funds | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, fair value of plan assets | 0 | 0
Fixed income commingled/mutual funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, fair value of plan assets | 89 | 95
Fixed income commingled/mutual funds | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, fair value of plan assets | 0 | 0
Fixed income commingled/mutual funds | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, fair value of plan assets | 89 | 95
Fixed income commingled/mutual funds | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, fair value of plan assets | 0 | 0
Net plan assets subject to leveling |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, fair value of plan assets | 155 | 158
Net plan assets subject to leveling | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, fair value of plan assets | 0 | 0
Net plan assets subject to leveling | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, fair value of plan assets | 155 | 158
Net plan assets subject to leveling | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, fair value of plan assets | 0 | 0
Real estate investment trust at net asset value | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, fair value of plan assets |  |
Real estate investment trust at net asset value | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, fair value of plan assets |  |
Real estate investment trust at net asset value | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, fair value of plan assets |  |
Real estate investment trust at net asset value | Net asset value |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, fair value of plan assets | $ 30 | $ 31

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