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Accumulated Other Comprehensive Loss Accumulated Other Comprehensive Loss (Tables) | 12 Months Ended
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Dec. 31, 2019
Accumulated Other Comprehensive Loss [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
| Postretirement Benefit Plans |  | Cumulative Translation Adjustment |  | Accumulated Other Comprehensive Loss
As of December 31, 2016 | $ | (145.2 | ) |  | $ | (306.0 | ) |  | $ | (451.2 | )
Net change during period | 7.6 |  |  | 95.4 |  |  | 103.0 |
As of December 31, 2017 | (137.6 | ) |  | (210.6 | ) |  | (348.2 | )
Net change during period | 6.0 |  |  | (33.3 | ) |  | (27.3 | )
As of December 31, 2018 | (131.6 | ) |  | (243.9 | ) |  | (375.5 | )
Net change during period | (1.7 | ) |  | (8.1 | ) |  | (9.8 | )
As of December 31, 2019 | $ | (133.3 | ) |  | $ | (252.0 | ) |  | $ | (385.3 | )

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- Definition Accumulated Other Comprehensive Loss [Abstract] + References No definition available. + Details
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580 + Details
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