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Leases (Tables) | 6 Months Ended
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Jun. 30, 2021
Leases [Abstract] |
Schedule of Lease, Cost | The components of lease expense were as follows:
| Three Months Ended June 30, |  | Six Months Ended June 30,
($ in millions) | 2021 |  | 2020 |  | 2021 |  | 2020
Operating lease cost | $ | 3.1 |  |  | $ | 3.1 |  |  | $ | 6.2 |  |  | $ | 6.2 |
Short-term lease cost | 0.3 |  |  | 0.1 |  |  | 0.5 |  |  | 0.3 |
Variable lease cost | 1.4 |  |  | 0.8 |  |  | 2.2 |  |  | 1.6 |
Total lease cost | $ | 4.8 |  |  | $ | 4.0 |  |  | $ | 8.9 |  |  | $ | 8.1 |
Supplemental cash flow information related to leases were as follows:
| Three Months Ended June 30, |  | Six Months Ended June 30,
($ in millions) | 2021 |  |  | 2020 |  | 2021 | 2020
Cash paid for amounts included in the measurement of lease liabilities: |  |  |  |  |  |  |
Operating cash flows from operating leases | $ | 3.1 |  |  |  | $ | 3.2 |  |  | $ | 6.3 |  | $ | 6.4 |
Right-of-use assets obtained in exchange for new operating lease liabilities | $ | 0.3 |  |  |  | $ | 1.8 |  |  | $ | 0.8 |  | $ | 4.3 |
Schedule of Lessee, Operating Lease, Liability, Maturity | Maturities of operating lease liabilities were as follows:
($ in millions) | June 30, |  | December 31, |  |  |  |  |  |
Year | 2021 |  | 2020 |  |  |  |
2021 (remaining period as of ) | $ | 6.0 |  |  | $ | 12.4 |  |  |  |  |  |  |
2022 | 10.5 |  |  | 10.4 |  |  |  |  |  |  |
2023 | 9.4 |  |  | 9.3 |  |  |  |  |  |  |
2024 | 8.7 |  |  | 8.7 |  |  |  |  |  |  |
2025 | 6.9 |  |  | 6.9 |  |  |  |  |  |  |
Thereafter | 37.1 |  |  | 37.5 |  |  |  |  |  |  |
| 78.6 |  |  | 85.2 |  |  |  |  |  |  |
Less: imputed lease interest | (13.3) |  |  | (14.7) |  |  |  |  |  |  |
Total lease liabilities | $ | 65.3 |  |  | $ | 70.5 |  |  |  |  |  |  |

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- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 + Details
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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details
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