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Leases - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Jan. 01, 2020 | Dec. 31, 2019 | Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Operating lease liabilities |  |  |  | $ 77.7 |
Operating leases, rent expense | $ 24.4 | $ 21.1 |  |  |
Progress payments made on behalf of company, paid |  |  |  | $ 5.3 |
Progress payments made on behalf of company, scheduled to be paid |  |  | $ 8.2 |  |
ASU 2016-02 |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Operating lease, right-of-use asset |  |  |  |  | $ 51.7
Operating lease liabilities |  |  |  |  | 55.6
Operating lease, liability, current |  |  |  |  | 12.5
Operating lease, liability, noncurrent |  |  |  |  | $ 43.1
Forecast [Member] |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Lessee, finance lease, lease not yet commenced, right-of-use asset to be recognized |  |  | 13.5 |  |
Lessee, finance lease, lease not yet commenced, liability to be recognized |  |  | $ 13.5 |  |

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- Definition Lessee, Finance Lease, Lease Not Yet Commenced, Liability To Be Recognized + References No definition available. + Details
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- Definition Lessee, Finance Lease, Lease Not Yet Commenced, Right-Of-Use Asset To Be Recognized + References No definition available. + Details
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- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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