Consolidated Statements of Cash Flows (unaudited)	3 Months Ended	6 Months Ended
	Mar. 31, 2016 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)
OPERATING ACTIVITIES
Net income	$ 300,000	$ 38,800,000	$ 110,100,000
Income (loss) from discontinued operations, net of income taxes		(9,300,000)	47,300,000
Income from continuing operations	10,200,000	48,100,000	62,800,000
Reconciliation to net cash provided by (used for) operating activities from continuing operations:
Depreciation and amortization		46,800,000	50,200,000
Equity in earnings of unconsolidated affiliate		(9,500,000)	(8,500,000)
Dividends received from unconsolidated affiliate		16,800,000	11,800,000
Cash paid for Chapter 11, and legacy product and environmental		(6,000,000)	(498,200,000)
Provision for income taxes	(21,200,000)	42,700,000	35,400,000
Cash paid for income taxes, net of refunds		(24,500,000)	(8,700,000)
Loss on early extinguishment of debt		11,100,000	0
Cash paid for interest on credit arrangements		(40,600,000)	(44,900,000)
Defined benefit pension expense		5,300,000	14,500,000
Cash paid under defined benefit pension arrangements		(8,000,000)	(7,700,000)
Cash paid for restructuring		(10,700,000)	(3,400,000)
Changes in assets and liabilities, excluding effect of currency translation and acquisitions:
Trade accounts receivable		37,200,000	17,100,000
Inventories		(7,700,000)	500,000
Accounts payable		7,000,000	16,200,000
All other items, net		28,800,000	53,500,000
Net cash provided by (used for) operating activities from continuing operations	74,300,000	136,800,000	(309,400,000)
INVESTING ACTIVITIES
Capital expenditures		(57,300,000)	(57,200,000)
Business acquired		245,100,000	0
Proceeds from sale of product lines		11,300,000	0
Other investing activities		(600,000)	(200,000)
Net cash used for investing activities from continuing operations		(291,700,000)	(57,400,000)
FINANCING ACTIVITIES
Borrowings under credit arrangements		16,000,000	278,200,000
Repayments under credit arrangements		(609,400,000)	(40,200,000)
Cash paid for repurchases of common stock		(35,100,000)	(108,700,000)
Proceeds from exercise of stock options		9,200,000	21,800,000
Dividends paid		(12,000,000)	0
Distribution from GCP		750,000,000	0
Other financing activities		(2,700,000)	(1,900,000)
Net cash provided by financing activities from continuing operations	140,400,000	116,000,000	149,200,000
Effect of currency exchange rate changes on cash and cash equivalents		1,900,000	(1,500,000)
Decrease in cash and cash equivalents from continuing operations		(37,000,000)	(219,100,000)
Cash flows from discontinued operations
Net cash used for investing activities		23,900,000	65,300,000
Net cash used for investing activities		(9,500,000)	(16,500,000)
Net cash provided by (used for) financing activities		31,400,000	(10,400,000)
Effect of currency exchange rate changes on cash and cash equivalents		(1,000,000)	(9,900,000)
Increase in cash and cash equivalents from discontinued operations		44,800,000	28,500,000
Net increase (decrease) in cash and cash equivalents		7,800,000	(190,600,000)
Less: cash and cash equivalents of discontinued operations		(143,400,000)	0
Cash and cash equivalents, beginning of period	231,300,000	231,300,000
Cash and cash equivalents, end of period		194,300,000
Supplemental Cash Flow Information [Abstract]
Net share settled stock option exercises		10,100,000	0
Scenario, Previously Reported
OPERATING ACTIVITIES
Net income	(2,900,000)
Income from continuing operations	7,000,000
Reconciliation to net cash provided by (used for) operating activities from continuing operations:
Provision for income taxes	(24,400,000)
Changes in assets and liabilities, excluding effect of currency translation and acquisitions:
Net cash provided by (used for) operating activities from continuing operations	69,600,000
FINANCING ACTIVITIES
Net cash provided by financing activities from continuing operations	145,100,000
Cash flows from discontinued operations
Cash and cash equivalents, beginning of period	$ 329,900,000	$ 329,900,000	557,500,000
Cash and cash equivalents, end of period			$ 366,900,000