Condensed Consolidated Statements of Shareowners' Deficit Statement - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance, Shareowners' Equity (Deficit)	$ (75.0)	$ (117.9)
Net loss	(26.9)	(8.3)
Other comprehensive income	1.2	1.7
Ending Balance, Shareowners' Equity (Deficit)	$ (102.3)	$ (127.9)
Preferred Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance, Shares	3.1	3.1
Beginning Balance, Shareowners' Equity (Deficit)	$ 129.4	$ 129.4
Ending Balance, Shares	3.1	3.1
Ending Balance, Shareowners' Equity (Deficit)	$ 129.4	$ 129.4
Common Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance, Shares	50.2	42.2
Beginning Balance, Shareowners' Equity (Deficit)	$ 0.5	$ 0.4
Shares issued under employee plans	0.2	0.2
Shares issued under employee plans	$ 0.0	$ 0.0
Ending Balance, Shares	50.4	42.4
Ending Balance, Shareowners' Equity (Deficit)	$ 0.5	$ 0.4
Additional Paid-in Capital [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance, Shareowners' Equity (Deficit)	2,680.0	2,565.6
Shares issued under employee plans	0.0	0.0
Shares purchased under employee plans and other	(0.8)	(2.0)
Stock-based compensation	1.8	1.2
Dividends on preferred stock	(2.6)	(2.6)
Ending Balance, Shareowners' Equity (Deficit)	2,678.4	2,562.2
Retained Earnings [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance, Shareowners' Equity (Deficit)	(2,709.4)	(2,639.6)
Net loss	(26.9)	(8.3)
Ending Balance, Shareowners' Equity (Deficit)	(2,736.3)	(2,647.9)
AOCI Attributable to Parent [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance, Shareowners' Equity (Deficit)	(175.5)	(173.7)
Other comprehensive income	1.2	1.7
Ending Balance, Shareowners' Equity (Deficit)	$ (174.3)	$ (172.0)