Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482130/360-10-45-4

Name:	us-gaap_AssetImpairmentCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Asset Impairment (Details) - USD ($) $ in Millions	12 Months Ended
Asset Impairment (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Impaired Long-Lived Assets Held and Used [Line Items]
Asset impairment charges	$ 2.0	$ 11.2	$ 0.0
At-risk assets	224.0
Equity securities
Impaired Long-Lived Assets Held and Used [Line Items]
Asset impairment charges	$ 2.0	1.7
Land
Impaired Long-Lived Assets Held and Used [Line Items]
Asset impairment charges		$ 9.5