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v3.20.2

Leases - Other (Details) £ in Millions, $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 USD ($) | Jun. 30, 2019 USD ($) | Jun. 30, 2020 GBP (£) | Jun. 30, 2020 USD ($) | Jun. 30, 2019 USD ($)
Leases |  |  |  |  |
Total undiscounted rent obligations | $ 5,280.9 |  |  | $ 5,280.9 |
Sublease rent received | $ 6.5 | $ 5.7 |  | $ 12.9 | $ 11.1
Proceeds from sale-leaseback transactions |  |  | £ 0.0 |  | $ 7.3
Property leases | Minimum |  |  |  |  |
Leases |  |  |  |  |
Initial lease period (in years) | 5 years |  |  | 5 years |
Property leases | Maximum |  |  |  |  |
Leases |  |  |  |  |
Initial lease period (in years) | 20 years |  |  | 20 years |
Equipment leases | Maximum |  |  |  |  |
Leases |  |  |  |  |
Initial lease period (in years) | 5 years |  |  | 5 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 Amount of lessee's undiscounted obligation for lease payments for operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980 + Details
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- Definition Term of lessee's 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/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 sublease income excluding finance and operating lease expense. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 Reference 2: 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 + Details
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