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Postretirement Benefits (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 29, 2019 | Jun. 30, 2018 | Jun. 29, 2019 | Jun. 30, 2018
Pension Plans [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Interest Cost | $ 2.6 | $ 5.7 | $ 5.2 | $ 11.4
Expected Return on Plan Assets | (3.4) | (6.4) | (6.7) | (12.7)
Amortization of Prior Service Credits | 0.0 | 0.0 | 0.0 | 0.0
Amortization of Net Actuarial Losses | 2.6 | 2.6 | 5.1 | 5.1
Net Pension and Other Benefit Costs | 1.8 | 1.9 | 3.6 | 3.8
Other Postretirement Benefits [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Interest Cost | 0.3 | 0.2 | 0.6 | 0.5
Expected Return on Plan Assets | 0.0 | 0.0 | 0.0 | 0.0
Amortization of Prior Service Credits | (0.2) | (0.1) | (0.4) | (0.3)
Amortization of Net Actuarial Losses | 0.0 | 0.0 | 0.0 | 0.0
Net Pension and Other Benefit Costs | $ 0.1 | $ 0.1 | 0.2 | 0.2
Nonqualified Plan [Member] | Pension Plans [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Company Contributions |  |  | 2.4 | 2.1
Qualified Plan [Member] | Pension Plans [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Company Contributions |  |  | $ 0.0 | $ 35.0

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- Definition Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(5) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(5) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920 + Details
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