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Other Income, Net - Schedule of Components of Other Income (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Securities earnings: |  |  |  |
Dividends and interest |  |  | $ 6.1 | $ 16.8
Securities transactions, net |  |  | 0.3 |
Security earnings, total | $ 3.3 | $ 8.5 | 6.4 | 16.8
Currency transactions, net |  |  | (0.2) | 4.8
Insurance recoveries | 4.7 | 0.2 | 5.0 | 0.4
Infrastructure reimbursement |  |  | 9.1 | 4.0
Gain on land sales |  |  | 0.7 | 12.5
Other, net |  |  | 1.0 | 1.2
Total | $ 15.4 | $ 19.3 | $ 22.0 | $ 39.7

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- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109226348&loc=d3e2443-110228 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230 + Details
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