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Newly Adopted Accounting Standards and Accounting Standards Not Yet Implemented Newly Adopted Accounting Standards and Accounting Standards Not Yet Implemented (Tables) | 3 Months Ended
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Mar. 31, 2019
Newly Adopted Accounting Standards and Accounting Standards Not Yet Implemented [Abstract] |
Schedule of Adjustments Due to ASU 2014-09 [Table Text Block] | The most significant impact was the recognition of ROU assets and lease liabilities for operating leases upon adoption, as set forth in the table below. The Company's accounting for finance leases remained unchanged.
| Adoption of ASU 2016-02 January 1, 2019
| (Dollars in millions)
ASSETS |
Operating lease right-of-use assets | $ | 109.3 |
Total assets | $ | 109.3 |
LIABILITIES |
Accounts payable and accrued expenses | $ | 41.8 |
Total current liabilities | 41.8 |
Operating lease liabilities, less current portion | 67.5 |
Total liabilities | $ | 109.3 |

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- Definition Newly Adopted Accounting Standards and Accounting Standards Not Yet Implemented [Abstract] + References No definition available. + Details
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- Definition Tabular disclosure of changes in accounting principles, including adoption of new accounting pronouncements, that describes the new methods, amount and effects on financial statement line items. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22580-107794 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=68064558&loc=d3e765-108305 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22499-107794 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.10-01.(b)(6)) -URI http://asc.fasb.org/extlink&oid=27015980&loc=d3e46468-122699 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22583-107794 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=68064558&loc=d3e725-108305 + Details
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