Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Jul. 01, 2021
Operating activities
Net loss	$ (175.0)	$ (306.9)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation and amortization expense	169.0	160.3
Amortization of deferred financing fees	3.7	4.3
Accretion of customer supply agreement	1.3	1.1
Employee Benefit and Share-based Payment Arrangement, Noncash	18.3	13.4
Loss on Derivative Instruments, Pretax	4.0	(0.1)
Derivative Instruments, Loss Reclassified from Accumulated OCI into Income, Effective Portion	5.6
(Gain) loss from foreign currency transactions	(25.7)	4.9
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	(1.6)	(1.4)
Deferred taxes	(13.6)	12.5
Increase (Decrease) in Obligation, Pension and Other Postretirement Benefits	(39.7)	(30.5)
Grant liability amortization	(0.7)	(0.8)
Unrealized Gain (Loss) on Investments	0.9	1.0
Increase (Decrease) in Forward Provision	(53.4)	(28.1)
Changes in assets and liabilities
Accounts receivable, net	(124.7)	(11.2)
Inventory, net	13.9	111.8
Accounts payable and accrued liabilities	105.5	(11.3)
Profit sharing/deferred compensation	(43.7)	(29.2)
Advance payments	(65.7)	(1.3)
Income taxes receivable/payable	12.1	8.3
Pension plans employer contributions	(38.8)	1.2
Other	(12.0)	(15.2)
Net cash used in operating activities	(331.7)	(197.7)
Investing activities
Purchase of property, plant and equipment	(45.2)	(53.3)
Payments to Acquire Businesses, Net of Cash Acquired	0.0	(21.1)
Payments for (Proceeds from) Other Investing Activities	(2.2)	2.2
Net cash used in investing activities	(47.4)	(72.2)
Financing activities
Proceeds from (Repayments of) Other Debt	0.0	(5.0)
Proceeds from Issuance of Senior Long-term Debt	289.5	0.0
Principal payments of debt	(22.5)	(19.9)
Repayments of Debt	(3.0)	(2.0)
Repayments of Senior Debt	0.0	300.0
Payment, Tax Withholding, Share-based Payment Arrangement	(6.5)	(4.4)
Proceeds from Stock Plans	1.9	1.4
Payments of Dividends	(2.2)	(2.2)
Proceeds from (Payments for) Other Financing Activities	0.0	0.1
Net cash used in financing activities	(321.8)	(332.0)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	(708.5)	(604.0)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Beginning Balance	1,498.4	1,893.1
Cash, cash equivalents, and restricted cash, end of period	789.9	1,289.1
Cash and Cash Equivalents, at Carrying Value, Ending Balance	770.2	1,269.3
Reconciliation of Cash, Cash Equivalents, and Restricted Cash [Abstract]
Restricted Cash, Current	0.2	0.3
Restricted Cash, Noncurrent	19.5	19.5
Increase (Decrease) in Income Taxes Payable	12.1	8.3
Increase (Decrease) in Contract with Customer, Liability	(26.5)	(82.1)
Defined Benefit Plan, Plan Assets, Contributions by Employer		(15.6)
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Assets Transferred to (from) Plan	23.0
Payments to Acquire Businesses, Net of Cash Acquired	0.0	21.1
Proceeds from Issuance of Senior Long-term Debt	289.5	0.0
Repayments of Senior Debt	0.0	300.0
Proceeds from (Payments for) Other Financing Activities	0.0	0.1
Increase (Decrease) in Contract with Customer, Asset	44.5	(14.4)
Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Continuing Operations	(7.6)	(2.1)
Gain (Loss) on Contract Termination	(21.0)	0.0
Increase (Decrease) in Deferred Liabilities	$ (38.8)	$ 1.2