Significant Accounting Policies - Receivables And Allowance For Expected Credit Losses (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Accounting Policies [Abstract]
Accounts receivable, 90 days or more past due	$ 3.6	$ 3.7
Accrued unbilled revenue	$ 143.2	$ 132.0

Amount of accounts receivable, classified as noncurrent, 90 days or more past due and still accruing.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-16

Name:	us-gaap_AccountsReceivableNoncurrent90DaysOrMorePastDueStillAccruing
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant