CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Net income	$ 186.8	$ 490.9	$ 125.4
Other comprehensive income (loss):
Net foreign currency translation adjustment	(95.9)	10.9	4.7
Net change in postretirement benefit plans, net of tax impacts of $2.6, ($38.8), and $0, respectively	(15.0)	66.3	(42.3)
Net change in unrealized loss on investment securities, net of tax impacts of $0, $0, and $1.0, respectively	0	0	1.0
Other comprehensive (loss) income	(110.9)	77.2	(36.6)
Comprehensive income	75.9	568.1	88.8
Less: Comprehensive income attributable to noncontrolling interests	2.3	2.4	0
Comprehensive income attributable to ITT Corporation	73.6	565.7	88.8
Disclosure of reclassification adjustments and other adjustments to postretirement benefit plans
Amortization of prior service (benefit) costs, net of tax expense (benefit) of $2.2, $(0.1), and $0, respectively (See Note 15)	(3.8)	0.3	0.8
Amortization of net actuarial loss, net of tax benefit of $(3.1), $(4.8), and $0, respectively (See Note 15)	6.3	8.5	10.9
Prior service credit, net of tax expense of $(19.7), $(7.1), and $0, respectively	34.5	11.9	3.1
Net actuarial (loss) gain, net of tax benefit (expense) of $23.2, $(26.8), and $0, respectively	(53.8)	46.1	(56.7)
Unrealized change from foreign currency translation	1.8	(0.5)	(0.4)
Net change in postretirement benefit plans, net of tax impacts of $2.6, ($38.8), and $0, respectively	(15.0)	66.3	(42.3)
Disclosure of reclassification adjustments and other adjustments to unrealized loss on investment securities
Realized losses arising during the period, net of tax expense of $0, $0, and $1.0, respectively	0	0	1.0	[1]
Net change in unrealized loss on investment securities, net of tax impacts of $0, $0, and $1.0, respectively	$ 0	$ 0	$ 1.0

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