Summary Of Significant Accounting Policies - Amortized Cost Basis By Year of Origination and Credit Quality Indicator (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Sales-type Lease, Net Investment in Lease, Credit Quality Indicator [Line Items]
2024	$ 158.1
2023	54.7
2022	85.7
2021	60.4
2020	18.8
Prior	1.8
Subtotal	379.5	$ 371.6
High
Sales-type Lease, Net Investment in Lease, Credit Quality Indicator [Line Items]
2024	73.2
2023	30.0
2022	41.7
2021	31.4
2020	7.4
Prior	0.7
Subtotal	184.4
Moderate
Sales-type Lease, Net Investment in Lease, Credit Quality Indicator [Line Items]
2024	82.8
2023	23.7
2022	43.1
2021	27.5
2020	11.2
Prior	1.1
Subtotal	189.4
Low
Sales-type Lease, Net Investment in Lease, Credit Quality Indicator [Line Items]
2024	2.1
2023	1.0
2022	0.9
2021	1.5
2020	0.2
Prior	0.0
Subtotal	$ 5.7

Amount, before allowance for credit loss, of net investment in sales-type lease.

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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