CONSOLIDATED CONDENSED STATEMENTS OF CHANGES IN SHAREDHOLDERS' EQUITY - USD ($) $ in Millions	Total	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest [Member]
Total shareholders' equity, beginning balance at Dec. 31, 2014	$ 1,220.3	$ 91.0	$ 1,445.1		$ 5.4
Postretirement benefit plans, beginning balance at Dec. 31, 2014				$ (144.2)
Cumulative translation adjustment, beginning balance at Dec. 31, 2014				(176.7)
Unrealized loss on investment securities, beginning balance at Dec. 31, 2014				(0.3)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Activity from stock incentive plans		0.3
Net income attributable to ITT Corporation	42.1		42.1
Dividends declared			(10.5)
Activity from stock incentive plans			6.5
Share repurchases		(2.1)	(81.5)
Net change in postretirement benefit plans	0.5			0.5
Net cumulative translation adjustment				(60.9)
Loss attributable to noncontrolling interests	0.1				(0.1)
Dividend to noncontrolling interest shareholders					0.0
Change In Equity From Noncontrolling Interest Attributable To Other					0.0
Postretirement benefit plans, ending balance at Mar. 31, 2015				(143.7)
Cumulative translation adjustment, ending balance at Mar. 31, 2015				(237.6)
Unrealized loss on investment securities, ending balance at Mar. 31, 2015				(0.3)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net change in common stock		(1.8)
Net change in retained earnings			(43.4)
Net change in accumulated other comprehensive loss				(60.4)
Net change in noncontrolling interests					(0.1)
Total shareholders' equity, ending balance at Mar. 31, 2015	1,114.6	89.2	1,401.7	(381.6)	5.3
Total shareholders' equity, beginning balance at Dec. 31, 2015	1,365.4	89.5	1,696.7		3.3
Postretirement benefit plans, beginning balance at Dec. 31, 2015				(153.7)
Cumulative translation adjustment, beginning balance at Dec. 31, 2015				(270.1)
Unrealized loss on investment securities, beginning balance at Dec. 31, 2015				(0.3)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Activity from stock incentive plans		0.7
Net income attributable to ITT Corporation	37.4		37.4
Dividends declared			(11.3)
Activity from stock incentive plans			11.1
Share repurchases		(0.2)	(6.7)
Net change in postretirement benefit plans	1.1			1.1
Net cumulative translation adjustment				27.2
Loss attributable to noncontrolling interests	0.1				(0.1)
Dividend to noncontrolling interest shareholders					(1.9)
Change In Equity From Noncontrolling Interest Attributable To Other					0.2
Postretirement benefit plans, ending balance at Mar. 31, 2016				(152.6)
Cumulative translation adjustment, ending balance at Mar. 31, 2016				(242.9)
Unrealized loss on investment securities, ending balance at Mar. 31, 2016				(0.3)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net change in common stock		0.5
Net change in retained earnings			30.5
Net change in accumulated other comprehensive loss				28.3
Net change in noncontrolling interests					(1.8)
Total shareholders' equity, ending balance at Mar. 31, 2016	$ 1,422.9	$ 90.0	$ 1,727.2	$ (395.8)	$ 1.5