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Commitments (Tables) | 12 Months Ended
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Dec. 31, 2022
Lessee, Lease, Description [Line Items] |
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] | Supplemental cash flow information related to leases was as follows for years ended December 31, 2022 and 2021:
(in millions) | 2022 |  | 2021
Cash outflows for operating leases | $ | 65.4 |  |  | $ | 64.2 |
Cash outflows for finance leases | 17.1 |  | 17.0
Lease, Cost [Table Text Block] | The components of lease costs were as follows for the years ended December 31, 2022 and 2021:
(in millions) | 2022 |  | 2021
Operating lease expense: |  |  |
Operating lease cost | $ | 56.9 |  |  | $ | 63.2 |
Short-term lease cost | 0.4 |  |  | 0.7 |
Total operating lease expense included in other expense | $ | 57.3 |  |  | $ | 63.9 |
Finance lease expense: |  |  |
Interest expense | $ | 2.8 |  |  | $ | 3.1 |
Depreciation expense | 8.7 |  |  | 8.7 |
Total finance lease expense | $ | 11.5 |  |  | $ | 11.8 |
Sublease revenue included in other revenue | $ | 10.6 |  |  | $ | 10.4 |
Lessee, Operating Lease, Liability, Maturity | Future minimum lease payments were as follows as of December 31, 2022 for operating and finance leases:
(in millions) |  | Operating Leases
2023 |  | $ | 65.5 |
2024 |  | 59.4 |
2025 |  | 56.4 |
2026 |  | 52.3 |
2027 |  | 50.0 |
Thereafter |  | 239.2 |
Total lease payments |  | 522.8 |
Less: imputed interest |  | (89.4) |
Present value of lease liability |  | $ | 433.4 |
Finance Lease, Liability, Fiscal Year Maturity |
(in millions) |  | Finance Lease
2023 |  | $ | 17.2 |
2024 |  | 17.4 |
2025 |  | 17.5 |
2026 |  | 17.6 |
2027 |  | 17.8 |
Thereafter |  | 58.9 |
Total lease payments |  | 146.4 |
Less: imputed interest |  | (70.4) |
Present value of lease liability |  | $ | 76.0 |
Property Subject to Operating Lease [Member] |
Lessee, Lease, Description [Line Items] |
Schedule of Amounts Recognized in Balance Sheet [Table Text Block] | Supplemental balance sheet information related to leases was as follows as of December 31, 2022 and 2021: Operating leases
(in millions) | 2022 |  | 2021
Operating lease right-of-use assets | $ | 310.6 |  |  | $ | 345.3 |
Operating lease liabilities: |  |  |
Other current liabilities | $ | 49.9 |  |  | $ | 47.3 |
Other liabilities | 383.5 |  |  | 449.4 |
Total operating lease liabilities | $ | 433.4 |  |  | $ | 496.7 |
Weighted average remaining lease term (in months) | 121 |  | 132
Weighted average discount rate | 3.8 | % |  | 3.9 | %
Property Subject to Finance Lease [Member] |
Lessee, Lease, Description [Line Items] |
Schedule of Amounts Recognized in Balance Sheet [Table Text Block] | Finance leases
(in millions) | 2022 |  | 2021
Finance lease right-of-use assets | $ | 71.5 |  |  | $ | 80.2 |
Finance lease liabilities: |  |  |
Other current liabilities | $ | 8.2 |  |  | $ | 7.9 |
Other liabilities | 67.8 |  |  | 75.9 |
Total finance lease liabilities | $ | 76.0 |  |  | $ | 83.8 |
Weighted average remaining lease term (in months) | 99 |  | 111
Weighted average discount rate | 3.5 | % |  | 3.5 | %

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