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Subsequent Events (Details) - USD ($) $ in Millions | Jul. 28, 2019 | Mar. 31, 2019 | Jul. 24, 2019
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Subsequent Event [Line Items] |  |  |
Closing costs | $ 15 |  |
Deferred tax liability | 260 |  |
Multiemployer plans, withdrawal obligation | $ 110 |  |
Multiemployer plan withdrawal obligation term | 20 years |  |
Senior Notes Due November 2019 |  |  |
Subsequent Event [Line Items] |  |  |
Debt repurchase amount |  |  | $ 500
Debt instrument interest rate stated percentage |  |  | 4.15%
Senior Notes Due December 2020 |  |  |
Subsequent Event [Line Items] |  |  |
Debt repurchase amount |  |  | $ 500
Debt instrument interest rate stated percentage |  |  | 4.00%
Senior Notes Due May 2021 |  |  |
Subsequent Event [Line Items] |  |  |
Debt instrument interest rate stated percentage |  |  | 3.25%
Senior Notes Due May 2023 |  |  |
Subsequent Event [Line Items] |  |  |
Debt instrument interest rate stated percentage |  |  | 2.65%
Senior Notes Due November 2027 |  |  |
Subsequent Event [Line Items] |  |  |
Debt instrument interest rate stated percentage |  |  | 3.40%
Cookies, fruit and fruit snacks businesses |  |  |
Subsequent Event [Line Items] |  |  |
Cash proceeds from sale of businesses | $ 1,300 | $ 1,300 |
Net assets | $ 1,300 | $ 1,300 |

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