CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 351.6	$ 186.8	$ 490.9
Other comprehensive (loss) income:
Net foreign currency translation adjustment	(93.4)	(95.9)	10.9
Net change in postretirement benefit plans, net of tax impacts of $9.8, $2.6, and $(38.8), respectively	(9.5)	(15.0)	66.3
Other comprehensive (loss) income	(102.9)	(110.9)	77.2
Comprehensive income	248.7	75.9	568.1
Less: Comprehensive (loss) income attributable to noncontrolling interests	(0.2)	2.3	2.4
Comprehensive income attributable to ITT Corporation	248.9	73.6	565.7
Disclosure of reclassification adjustments and other adjustments to postretirement benefit plans
Amortization of prior service (benefit) costs, net of tax expense (benefit) of $3.8, $2.2, and $(0.1), respectively (See Note 15)	(6.2)	(3.8)	0.3
Amortization of net actuarial loss, net of tax benefit of $(4.5), $(3.1), and $(4.8), respectively (See Note 15)	8.6	6.3	8.5
Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Curtailment Cost (Credit), Net of Tax	2.6	0.0	0.0
Prior service (cost) credit, net of tax benefit (expense) of $0.7, $(19.7), and $(7.1), respectively	(1.3)	34.5	11.9
Net actuarial (loss) gain, net of tax benefit (expense) of $8.2, $23.2, and $(26.8), respectively	(10.5)	(53.8)	46.1
Unrealized change from foreign currency translation	2.5	1.8	(0.5)
Net change in postretirement benefit plans, net of tax impacts of $9.8, $2.6, and $(38.8), respectively	$ (9.5)	$ (15.0)	$ 66.3