Revenue and Contracts in Process - Schedule of Contract Assets and Contract Liabilities and Recognized Earnings (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Revenue from Contract with Customer [Abstract]
Costs incurred on contracts in progress	$ 2,979.0	$ 2,811.8
Estimated earnings	548.2	510.1
Contract revenue earned on uncompleted contracts	3,527.2	3,321.9
Less: progress billings	3,570.4	3,356.8
Net of cost earned on uncompleted contracts	(43.2)	(34.9)
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Abstract]
Contract assets	82.2	118.6
Contract liabilities	(125.4)	(153.5)
Net contract assets (liabilities)	$ (43.2)	$ (34.9)

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479837/606-10-45-3

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479837/606-10-45-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-8

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