Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Assets
Cash and cash equivalents	$ 823.5	$ 658.6
Restricted Cash, Current	0.1	0.2
Accounts receivable, net	585.5	489.5
Unbilled Receivables, Current	522.9	501.0
Inventory, net	1,767.3	1,470.7
Other current assets	52.5	38.3
Total current assets	3,751.8	3,158.3
Property, plant and equipment, net	2,084.2	2,205.9
Operating Lease, Right-of-Use Asset	92.1	94.3
Unbilled Receivable, Non Current	0.0	1.2
Pension assets	33.5	196.9
Pension reversion assets	61.1	71.1
Deferred tax asset-non-current, net	0.1	4.8
Other assets	99.9	91.8
Total assets	6,950.1	6,666.2
Liabilities
Accounts payable	1,106.8	919.8
Accrued expenses	420.1	411.7
Profit sharing	15.7	40.5
Current portion of long-term debt	64.8	53.7
Operating Lease, Liability, Current	9.1	8.3
Advance payments, short-term	38.3	24.9
Contract with Customer, Liability, Current	192.6	111.1
Provision for Loss on Contracts	256.6	305.9
Deferred revenue and other deferred credits, short-term	49.6	21.7
Other current liabilities	44.7	54.9
Total current liabilities	2,198.3	1,952.5
Long-term debt	4,018.7	3,814.9
Operating Lease, Liability, Noncurrent	84.3	85.4
Advance payments, long-term	301.9	199.9
Pension/OPEB obligation	30.3	25.2
Contract with Customer, Liability, Noncurrent	161.3	245.3
Provision for Loss on Contacts, Non Current	224.1	369.2
Deferred grant income liability — non-current	25.8	25.7
Deferred Tax Liabilities, Net, Noncurrent	9.1	1.3
Deferred revenue and other deferred credits	76.7	49.0
Other non-current liabilities	315.5	141.6
Stockholders’ Equity
Preferred stock, par value $0.01, 10,000,000 shares authorized, no shares issued	0.0	0.0
Additional paid-in capital	1,429.1	1,179.5
Accumulated other comprehensive loss	(89.6)	(203.9)
Retained earnings	616.3	1,232.5
Treasury Stock, Value	(2,456.7)	(2,456.7)
Total stockholders' equity	(499.7)	(247.5)
Noncontrolling interest	3.8	3.7
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(495.9)	(243.8)
Total liabilities and equity	6,950.1	6,666.2
Goodwill	631.2	630.5
Intangible Assets, Net (Excluding Goodwill)	$ 196.2	$ 211.4
Preferred Stock, Par Value	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	10,000,000	10,000,000
Class A [Member]
Stockholders’ Equity
Common stock	$ 1.2	$ 1.1
Common Stock, Par Value	$ 0.01	$ 0.01
Common Stock, Shares Authorized	200,000,000	200,000,000
Common Stock, Shares, Issued	116,054,291	105,252,421
Class B [Member]
Stockholders’ Equity
Common Stock, Par Value	$ 0	$ 0
Common Stock, Shares Authorized	0	0
Common Stock, Shares, Issued	0	0