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Accumulated Other Comprehensive Income (Loss) | 6 Months Ended
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Jun. 30, 2020
Accumulated Other Comprehensive Income (Loss) [Abstract] |
Comprehensive Income (Loss) Note [Text Block] | Accumulated Other Comprehensive Income (Loss) The following table sets forth the changes in AOCI, net of tax, by component during the three and six months ended June 30, 2020 and June 30, 2019:
| Foreign Currency Translation Gain (Loss) |  | Net Actuarial Gain and Prior Service Cost |  | Amortization of Gain on Interest Rate Swap |  | Net Gain (Loss) on Marketable Securities Held in Trust |  | Total
Three Months Ended June 30, 2020 |  |  |  |  |  |  |  |  |
Balance as of March 31, 2020 | $ | (2,072.9) |  |  | $ | (127.8) |  |  | $ | 2.6 |  |  | $ | 14.1 |  |  | $ | (2,184.0) |
Other comprehensive income (loss) | 56.5 |  |  | 2.6 |  |  | 0.5 |  |  | 12.5 |  |  | 72.1 |
Tax expense | (1.2) |  |  | 3.4 |  |  | (0.2) |  |  | (4.6) |  |  | (2.6) |
Other comprehensive income (loss), net of tax | 55.3 |  |  | 6.0 |  |  | 0.3 |  |  | 7.9 |  |  | 69.5 |
Other comprehensive income attributable to noncontrolling interest | 1.3 |  |  | — |  |  | — |  |  | — |  |  | 1.3 |
Balance as of June 30, 2020 | $ | (2,016.3) |  |  | $ | (121.8) |  |  | $ | 2.9 |  |  | $ | 22.0 |  |  | $ | (2,113.2) |
Three Months Ended June 30, 2019 |  |  |  |  |  |  |  |  |
Balance as of March 31, 2019 | $ | (1,495.5) |  |  | $ | (106.3) |  |  | $ | 1.0 |  |  | $ | 5.2 |  |  | $ | (1,595.6) |
Other comprehensive income (loss) | 99.9 |  |  | 2.6 |  |  | 0.5 |  |  | 12.2 |  |  | 115.2 |
Tax expense | 7.3 |  |  | (3.9) |  |  | — |  |  | (0.5) |  |  | 2.9 |
Other comprehensive income (loss), net of tax | 107.2 |  |  | (1.3) |  |  | 0.5 |  |  | 11.7 |  |  | 118.1 |
Other comprehensive loss attributable to noncontrolling interest | (0.4) |  |  | — |  |  | — |  |  | — |  |  | (0.4) |
Balance as of June 30, 2019 | $ | (1,388.7) |  |  | $ | (107.6) |  |  | $ | 1.5 |  |  | $ | 16.9 |  |  | $ | (1,477.9) |
Six Months Ended June 30, 2020 |  |  |  |  |  |  |  |  |
Balance at December 31, 2019 | $ | (1,476.8) |  |  | $ | (129.6) |  |  | $ | 2.1 |  |  | $ | 6.1 |  |  | $ | (1,598.2) |
Other comprehensive income (loss) | (539.4) |  |  | 12.3 |  |  | 1 |  |  | 20.5 |  |  | (505.6) |
Tax expense | (8.7) |  |  | (4.5) |  |  | (0.2) |  |  | (4.6) |  |  | (18.0) |
Other comprehensive income (loss), net of tax | (548.1) |  |  | 7.8 |  |  | 0.8 |  |  | 15.9 |  |  | (523.6) |
Addback: other comprehensive loss attributable to noncontrolling interest | 8.6 |  |  | — |  |  | — |  |  | — |  |  | 8.6 |
Balance as of June 30, 2020 | $ | (2,016.3) |  |  | $ | (121.8) |  |  | $ | 2.9 |  |  | $ | 22.0 |  |  | $ | (2,113.2) |
Six Months Ended June 30, 2019 |  |  |  |  |  |  |  |  |
Balance at December 31, 2018 | $ | (1,547.4) |  |  | $ | (105.3) |  |  | $ | 0.4 |  |  | $ | (4.8) |  |  | $ | (1,657.1) |
Other comprehensive income (loss) | 160.8 |  |  | 5.2 |  |  | 1.1 |  |  | 22.7 |  |  | 189.8 |
Tax expense | (1.8) |  |  | (7.5) |  |  | — |  |  | (1.0) |  |  | (10.3) |
Other comprehensive income (loss), net of tax | 159.0 |  |  | (2.3) |  |  | 1.1 |  |  | 21.7 |  |  | 179.5 |
Addback: other comprehensive loss attributable to noncontrolling interest | (0.3) |  |  | — |  |  | — |  |  | — |  |  | (0.3) |
Balance as of June 30, 2019 | $ | (1,388.7) |  |  | $ | (107.6) |  |  | $ | 1.5 |  |  | $ | 16.9 |  |  | $ | (1,477.9) |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] | The following table sets forth the changes in AOCI, net of tax, by component during the three and six months ended June 30, 2020 and June 30, 2019:
| Foreign Currency Translation Gain (Loss) |  | Net Actuarial Gain and Prior Service Cost |  | Amortization of Gain on Interest Rate Swap |  | Net Gain (Loss) on Marketable Securities Held in Trust |  | Total
Three Months Ended June 30, 2020 |  |  |  |  |  |  |  |  |
Balance as of March 31, 2020 | $ | (2,072.9) |  |  | $ | (127.8) |  |  | $ | 2.6 |  |  | $ | 14.1 |  |  | $ | (2,184.0) |
Other comprehensive income (loss) | 56.5 |  |  | 2.6 |  |  | 0.5 |  |  | 12.5 |  |  | 72.1 |
Tax expense | (1.2) |  |  | 3.4 |  |  | (0.2) |  |  | (4.6) |  |  | (2.6) |
Other comprehensive income (loss), net of tax | 55.3 |  |  | 6.0 |  |  | 0.3 |  |  | 7.9 |  |  | 69.5 |
Other comprehensive income attributable to noncontrolling interest | 1.3 |  |  | — |  |  | — |  |  | — |  |  | 1.3 |
Balance as of June 30, 2020 | $ | (2,016.3) |  |  | $ | (121.8) |  |  | $ | 2.9 |  |  | $ | 22.0 |  |  | $ | (2,113.2) |
Three Months Ended June 30, 2019 |  |  |  |  |  |  |  |  |
Balance as of March 31, 2019 | $ | (1,495.5) |  |  | $ | (106.3) |  |  | $ | 1.0 |  |  | $ | 5.2 |  |  | $ | (1,595.6) |
Other comprehensive income (loss) | 99.9 |  |  | 2.6 |  |  | 0.5 |  |  | 12.2 |  |  | 115.2 |
Tax expense | 7.3 |  |  | (3.9) |  |  | — |  |  | (0.5) |  |  | 2.9 |
Other comprehensive income (loss), net of tax | 107.2 |  |  | (1.3) |  |  | 0.5 |  |  | 11.7 |  |  | 118.1 |
Other comprehensive loss attributable to noncontrolling interest | (0.4) |  |  | — |  |  | — |  |  | — |  |  | (0.4) |
Balance as of June 30, 2019 | $ | (1,388.7) |  |  | $ | (107.6) |  |  | $ | 1.5 |  |  | $ | 16.9 |  |  | $ | (1,477.9) |
Six Months Ended June 30, 2020 |  |  |  |  |  |  |  |  |
Balance at December 31, 2019 | $ | (1,476.8) |  |  | $ | (129.6) |  |  | $ | 2.1 |  |  | $ | 6.1 |  |  | $ | (1,598.2) |
Other comprehensive income (loss) | (539.4) |  |  | 12.3 |  |  | 1 |  |  | 20.5 |  |  | (505.6) |
Tax expense | (8.7) |  |  | (4.5) |  |  | (0.2) |  |  | (4.6) |  |  | (18.0) |
Other comprehensive income (loss), net of tax | (548.1) |  |  | 7.8 |  |  | 0.8 |  |  | 15.9 |  |  | (523.6) |
Addback: other comprehensive loss attributable to noncontrolling interest | 8.6 |  |  | — |  |  | — |  |  | — |  |  | 8.6 |
Balance as of June 30, 2020 | $ | (2,016.3) |  |  | $ | (121.8) |  |  | $ | 2.9 |  |  | $ | 22.0 |  |  | $ | (2,113.2) |
Six Months Ended June 30, 2019 |  |  |  |  |  |  |  |  |
Balance at December 31, 2018 | $ | (1,547.4) |  |  | $ | (105.3) |  |  | $ | 0.4 |  |  | $ | (4.8) |  |  | $ | (1,657.1) |
Other comprehensive income (loss) | 160.8 |  |  | 5.2 |  |  | 1.1 |  |  | 22.7 |  |  | 189.8 |
Tax expense | (1.8) |  |  | (7.5) |  |  | — |  |  | (1.0) |  |  | (10.3) |
Other comprehensive income (loss), net of tax | 159.0 |  |  | (2.3) |  |  | 1.1 |  |  | 21.7 |  |  | 179.5 |
Addback: other comprehensive loss attributable to noncontrolling interest | (0.3) |  |  | — |  |  | — |  |  | — |  |  | (0.3) |
Balance as of June 30, 2019 | $ | (1,388.7) |  |  | $ | (107.6) |  |  | $ | 1.5 |  |  | $ | 16.9 |  |  | $ | (1,477.9) |

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- Definition Accumulated Other Comprehensive Income (Loss) [Abstract] + References No definition available. + Details
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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI http://asc.fasb.org/topic&trid=2134417 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 Reference 2: 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=121641772&loc=SL7669686-108580 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 + Details
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