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Leases - Additional Information (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2019 USD ($) RealEstate Location | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Lessee Lease Description [Line Items] |  |  |
Number of real estate leases | RealEstate | 31 |  |
Number of service center locations | Location | 236 |  |
Lessee, operating lease, option to renew, earliest year | 2020 |  |
Lessee, operating lease, option to renew, latest year | 2033 |  |
Operating lease, liability, current | $ 10.4 |  |
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] | us-gaap:AccruedLiabilitiesCurrent |  |
Operating lease, liability, noncurrent | $ 56.1 |  |
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] | us-gaap:OtherLiabilitiesNoncurrent |  |
operating Lease right of use asset | $ 65.3 |  |
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] | us-gaap:OtherAssetsNoncurrent |  |
Operating lease, weighted average remaining lease term | 9 years 4 months 24 days |  |
Operating lease, weighted average discount rate, percent | 4.00% |  |
Cash paid for amounts included in the measurement of operating leases | $ 14.3 |  |
Operating lease, expense | 14.7 | $ 12.6 | $ 14.1
Right-of-use assets obtained in exchange for new operating lease liabilities | $ 8.3 |  |
Minimum [Member] |  |  |
Lessee Lease Description [Line Items] |  |  |
Lessee, operating lease, renewal term | 1 year |  |
Maximum [Member] |  |  |
Lessee Lease Description [Line Items] |  |  |
Lessee, operating lease, renewal term | 10 years |  |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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- Definition Amount of operating lease expense. Excludes sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918638-209977 + Details
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- Definition Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918643-209977 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(1) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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- Definition Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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