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Leases | 12 Months Ended
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Dec. 31, 2017
Leases [Abstract] |
Leases | NOTE 8. LEASES The Company leases certain office space under non-cancelable operating leases, with initial terms typically ranging from one to ten years, along with options that permit renewals for additional periods. The Company also leases certain equipment under non-cancelable operating leases, with initial terms typically ranging from one to five years. Minimum rent is expensed on a straight-line basis over the term of the lease. Net rental expense for operating leases for the years ended December 31, 2017, 2016 and 2015 was:
DOLLARS IN MILLIONS |  | 2017 |  | 2016 |  | 2015
Minimum Rental Expense |  | $ | 20.5 |  |  | $ | 21.2 |  |  | $ | 20.7 |
Less Sublease Rental Income |  | (1.6 | ) |  | (1.6 | ) |  | (1.7 | )
Net Rental Expense |  | $ | 18.9 |  |  | $ | 19.6 |  |  | $ | 19.0 |
NOTE 8. LEASES (Continued) Future minimum lease payments under capital and operating leases at December 31, 2017 were:
DOLLARS IN MILLIONS |  | Capital Leases |  | Operating Leases
2018 |  | $ | 0.1 |  |  | $ | 15.3 |
2019 |  | — |  |  | 12.8 |
2020 |  | — |  |  | 10.6 |
2021 |  | — |  |  | 8.7 |
2022 |  | — |  |  | 7.1 |
2023 and Thereafter |  | — |  |  | 9.0 |
Total Future Payments |  | $ | 0.1 |  |  | $ | 63.5 |
Less Imputed Interest |  | — |  |  |
Present Value of Minimum Capital Lease Payments |  | $ | 0.1 |  |  |
The total of minimum rentals to be received in the future under non-cancelable subleases was $0.4 million at December 31, 2017.

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- Definition The entire disclosure for lessee entity's leasing arrangements including, but not limited to, all of the following: (a.) The basis on which contingent rental payments are determined, (b.) The existence and terms of renewal or purchase options and escalation clauses, (c.) Restrictions imposed by lease agreements, such as those concerning dividends, additional debt, and further leasing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6452660&loc=d3e36991-112694 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 1,3) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 + Details
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