Condensed Consolidated Statements of Shareowners' Deficit Statement - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance, Shareowners' Equity (Deficit)	$ (140.0)	$ (75.0)
Net loss	(34.0)	(26.9)
Other comprehensive income (loss)	(12.7)	1.2
Shares issued under employee plans	0.0	0.0
Shares purchased under employee plans and other	(1.1)	(0.8)
Stock-based compensation	1.7	1.8
Dividends on preferred stock	(2.6)	(2.6)
Ending Balance, Shareowners' Equity (Deficit)	(188.7)	(102.3)
Cumulative Convertible Preferred Shares [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance, Shareowners' Equity (Deficit)	$ 129.4	$ 129.4
Beginning Balance, Shares	3.1	3.1
Ending Balance, Shareowners' Equity (Deficit)	$ 129.4	$ 129.4
Ending Balance, Shares	3.1	3.1
Common Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance, Shareowners' Equity (Deficit)	$ 0.5	$ 0.5
Beginning Balance, Shares	50.4	50.2
Shares issued under employee plans	$ 0.0	$ 0.0
Shares issued under employee plans	0.2	0.2
Ending Balance, Shareowners' Equity (Deficit)	$ 0.5	$ 0.5
Ending Balance, Shares	50.6	50.4
Additional Paid-in Capital [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance, Shareowners' Equity (Deficit)	$ 2,676.2	$ 2,680.0
Shares issued under employee plans	0.0	0.0
Shares purchased under employee plans and other	(1.1)	(0.8)
Stock-based compensation	1.7	1.8
Dividends on preferred stock	(2.6)	(2.6)
Ending Balance, Shareowners' Equity (Deficit)	2,674.2	2,678.4
Retained Earnings [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance, Shareowners' Equity (Deficit)	(2,776.0)	(2,709.4)
Net loss	(34.0)	(26.9)
Ending Balance, Shareowners' Equity (Deficit)	(2,810.0)	(2,736.3)
AOCI Attributable to Parent [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance, Shareowners' Equity (Deficit)	(170.1)	(175.5)
Other comprehensive income (loss)	(12.7)	1.2
Ending Balance, Shareowners' Equity (Deficit)	$ (182.8)	$ (174.3)