CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017
Operating Activities:
Net income		$ 136.1	$ 34.5
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization		78.7	80.6
Deferred taxes		0.1	7.6
Gain on joint venture deconsolidation		(15.9)	0.0
Changes in operating assets and liabilities:
Inventories		(151.8)	(39.2)
Accounts receivable		(76.8)	(86.5)
Accounts payable		84.3	58.2
Retirement benefits	[1]	2.9	(135.0)
Accrued liabilities and other		(22.6)	(5.7)
Cash provided by (used in) operating activities		35.0	(85.5)
Investing Activities:
Purchases of property, plant and equipment		(70.6)	(55.3)
Asset disposals and other		0.8	3.3
Cash used in investing activities		(69.8)	(52.0)
Financing Activities:
Borrowings on long-term debt		7.1	7.3
Payments on long-term debt and capital leases		(2.8)	(0.8)
Net borrowings under credit facilities		3.4	59.4
Debt issuance costs		0.0	(0.8)
Sales to noncontrolling interests		14.4	2.2
Shares repurchased for income tax withholding on share-based compensation and other		(6.5)	(4.8)
Cash provided by financing activities		15.6	62.5
Increase (decrease) in cash and cash equivalents
Decrease in cash and cash equivalents		(19.2)	(75.0)
Cash and cash equivalents at beginning of period		141.6	229.6
Cash and cash equivalents at end of period		$ 122.4	$ 154.6

[1] Includes a $(135) million contribution to the U.S. defined benefit pension plan in 2017.