Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating Activities:
Net income (loss)	$ 146.5	$ (16.2)	$ (1,559.6)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	142.9	143.9	143.3
Share-based compensation	26.0	21.1	2.9
Deferred taxes	(0.1)	1.0	69.9
Impairment of goodwill	0.0	0.0	287.0
Debt extinguishment charge	0.0	65.5	21.5
Gain from disposal of property, plant and equipment, net	(0.9)	(2.9)	(2.9)
Net loss (gain) on sale of business	141.0	(13.8)	0.0
Non-cash restructuring charges	0.0	0.0	1,041.5
Change in operating assets and liabilities:
Retirement benefits	(46.7)	(110.7)	(91.9)
Accounts receivable	(128.5)	(126.0)	208.4
Inventories	(190.8)	(53.9)	158.2
Accounts payable	156.1	88.5	(230.5)
Accrued income taxes	2.5	(2.6)	2.4
Accrued liabilities and other	(23.1)	22.2	116.7
Cash provided by operating activities	224.9	16.1	166.9
Investing Activities:
Purchases of property, plant and equipment	(130.9)	(152.6)	(136.5)
Proceeds from disposal of property, plant and equipment	3.1	20.8	5.9
Proceeds from sale of businesses, net of transaction costs	0.3	53.1	0.0
Other	0.8	1.4	1.9
Cash used in investing activities	(126.7)	(77.3)	(128.7)
Financing Activities:
Borrowings on long-term debt	0.0	675.7	391.4
Payments on long-term debt and finance leases	(23.1)	(515.6)	(212.1)
Net borrowings (payments) under credit facilities	(5.6)	21.7	0.2
Purchase of convertible note capped call	0.0	0.0	(19.4)
Debt issuance costs	0.0	(9.5)	(9.1)
Debt extinguishment charge	0.0	(64.5)	(19.1)
Purchase of treasury stock	(139.9)	0.0	0.0
Sale to noncontrolling interests	6.4	0.0	0.0
Dividends paid to noncontrolling interests	(34.0)	0.0	(7.2)
Shares repurchased for income tax withholding on share-based compensation	(5.7)	(4.8)	(7.8)
Cash provided by (used in) financing activities	(201.9)	103.0	116.9
Increase (decrease) in cash and cash equivalents	(103.7)	41.8	155.1
Cash and cash equivalents at beginning of year	687.7	645.9	490.8
Cash and cash equivalents at end of year	$ 584.0	$ 687.7	$ 645.9