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Profit Sharing, Retirement Savings Plans and Defined Benefit Pension Plans - Components of Net Periodic Benefit Costs (Income) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items] |  |  |
Service cost | $ 4.3 | $ 7.0 | $ 10.6
Interest cost | 21.7 | 22.9 | 26.1
Expected return on plan assets | (37.9) | (40.4) | (34.3)
Other adjustments | 0.1 | 0.0 | 1.3
Amortization of net prior service cost | 0.0 | (0.1) | 0.0
Amortization of net actuarial loss | 3.3 | 6.5 | 7.5
Net periodic (income) benefit cost | (8.5) | (4.1) | 11.2
Cost (income) of settlement/curtailment | 4.4 | 5.1 | 0.7
Total benefit (income) cost | (4.1) | 1.0 | 11.9
U.S. | Pension Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Service cost | 0.1 | 0.1 | 0.6
Interest cost | 6.5 | 6.8 | 7.8
Expected return on plan assets | (8.7) | (9.8) | (10.0)
Other adjustments | 0.1 | 0.0 | 1.3
Amortization of net prior service cost | 0.0 | 0.0 | 0.0
Amortization of net actuarial loss | 0.9 | 0.8 | 2.2
Net periodic (income) benefit cost | (1.1) | (2.1) | 1.9
Cost (income) of settlement/curtailment | 1.6 | 2.1 | 0.6
Total benefit (income) cost | 0.5 | 0.0 | 2.5
International | Pension Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Service cost | 4.2 | 6.9 | 10.0
Interest cost | 15.2 | 16.1 | 18.3
Expected return on plan assets | (29.2) | (30.6) | (24.3)
Other adjustments | 0.0 | 0.0 | 0.0
Amortization of net prior service cost | 0.0 | (0.1) | 0.0
Amortization of net actuarial loss | 2.4 | 5.7 | 5.3
Net periodic (income) benefit cost | (7.4) | (2.0) | 9.3
Cost (income) of settlement/curtailment | 2.8 | 3.0 | 0.1
Total benefit (income) cost | $ (4.6) | $ 1.0 | $ 9.4

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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(4) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 2: 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=112275985&loc=d3e4179-114921 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)(4) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920 + Details
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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=112275985&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=108410482&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=108410482&loc=d3e2709-114920 + Details
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