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Amount of lessee's undiscounted obligation for lease payment for operating lease.

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Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

Amount of sublease income excluding finance and operating lease expense.

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-Topic 842
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Leases - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
Leases - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Leases
Total undiscounted rent obligations	$ 5,296.9
Sublease rent received	$ (17.0)	$ (17.9)	$ (22.4)
Land and Building \| Minimum
Leases
Initial lease period (in years)	5 years
Land and Building \| Maximum
Leases
Initial lease period (in years)	20 years
Equipment \| Maximum
Leases
Initial lease period (in years)	5 years