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Other assets
 12 Months Ended
Dec. 31, 2023
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Other assets Other assets
As atDecember 31, 2023December 31, 2022October 31, 2022October 31, 2021
Non-current security deposits
$5.0 $2.4 $3.6 $— 
Non-current insurance
2.8 1.8 — — 
Intangible assets, net
1.8 0.4 0.3 — 
Total other assets$9.6 $4.6 $3.9 $— 
As of December 31, 2023 and 2022 and October 31, 2022 and 2021, the Company's intangible assets consisted of the following:
As atDecember 31, 2023December 31, 2022October 31, 2022October 31, 2021
Internal-use software
$0.7 $— $— $— 
Cloud computing arrangements
1.3 0.4 0.3 — 
$2.0 $0.4 $0.3 $— 
Less - accumulated amortization
(0.2)— — — 
Intangible assets, net
$1.8 $0.4 $0.3 $— 
Amortization expense relating to cloud computing arrangements is recorded in selling, general and administrative expenses for the year ended December 31, 2023 is $0.2 million. For all periods prior the cloud computing arrangement projects were in process and not required to be amortized.