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Leases | 12 Months Ended
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Dec. 31, 2021
Leases [Abstract] |
Lessee, Operating Leases | 11. LEASES For the years ended December 31, 2021, 2020, and 2019, operating lease expense was $189.2 million, $187.3 million, and $170.5 million, respectively, and variable and short-term lease expense was $37.0 million, $36.0 million, and $33.3 million, respectively. In addition, $148.5 million and $94.3 million of Operating lease right-of-use assets were obtained in exchange for lease obligations during the year ended December 31, 2021 and 2020, respectively. As of December 31, 2021, our total commitments related to finance leases was $15.3 million. Leases in which we sublet also do not represent a significant portion of our leasing activity. Minimum future lease payments due in each of the next five years and thereafter, as of December 31, 2021, are presented in the table below.
(in millions) |  |
2022 |  | $ | 177.7 |
2023 |  | 155.1 |
2024 |  | 134.9 |
2025 |  | 110.4 |
2026 |  | 90.7 |
Thereafter |  | 308.1 |
Total future minimum lease payments |  | $ | 976.9 |
Less imputed interest |  | 108.7 |
Total |  | $ | 868.2 |
Other information related to operating leases was as follows.
|  | December 31, 2021
Weighted average remaining lease term |  | 7.1 years
Weighted average discount rate |  | 3.2 | %

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- Definition The entire disclosure for operating leases of lessee. Includes, but is not limited to, description of operating lease and maturity analysis of operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=77888251 + Details
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