Debt (Details Textual) (USD $) In Millions, except Per Share data, unless otherwise specified	1 Months Ended		3 Months Ended	12 Months Ended				1 Months Ended		1 Months Ended					1 Months Ended			1 Months Ended		1 Months Ended		1 Months Ended
	Oct. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Dec. 31, 2011 Office	Dec. 31, 2010	Dec. 31, 2009	Oct. 25, 2011 Revolving credit facility due august two thousand Thirteen [Member]	Oct. 31, 2011 ITT 2011 Revolving Credit Agreement [Member]	Oct. 25, 2011 ITT 2011 Revolving Credit Agreement [Member]	Sep. 30, 2011 4.90% Notes and Debentures due May 2014 [Member]	Sep. 20, 2011 4.90% Notes and Debentures due May 2014 [Member]	Dec. 31, 2010 4.90% Notes and Debentures due May 2014 [Member]	Dec. 31, 2010 Notes and Debentured due August 2048 [Member]	Dec. 31, 2010 Notes and Debentures Various 2011 - 2022 [Member]	Sep. 30, 2011 6.125% Notes and Debentures due May 2019 [Member]	Sep. 20, 2011 6.125% Notes and Debentures due May 2019 [Member]	Dec. 31, 2010 6.125% Notes and Debentures due May 2019 [Member]	Sep. 30, 2011 4.90% Notes and Debentures due May 2014 and 6.125% Notes and Debentures due May 2019 [Member]	Dec. 31, 2010 7.40% Notes and Debentures due November 2025 [Member]	Sep. 30, 2011 7.40% Notes and Debentures due November 2025 One [Member]	Sep. 20, 2011 7.40% Notes and Debentures due November 2025 One [Member]	Oct. 31, 2011 7.40% Notes and Debentures due November 2025 Two [Member]	Oct. 21, 2011 7.40% Notes and Debentures due November 2025 Two [Member]
Additional Debt (Textual) [Abstract]
Previously outstanding credit facility							$ 1,500
Maturity period of revolving credit facility								4 years
Extension period of revolving credit facility								1 year
Revolving credit facility									500
Maximum face amount outstanding on letters of credit									100
Minimum amount of reduce commitments									10
Maximum potential increase in credit facility									200
Maximum potential credit facility outstanding									700
Minimum voluntary prepayment Permissible under facility									50
Interest rate over federal funds effective rate									0.05%
Period of LIBOR Rate								1 month
Interest rate over statutory reserve requirement									1.00%
Minimum leverage ratio under credit facility								1.00
Maximum leverage ratio under credit facility								3.00
Minimum interest coverage ratio under credit facility								1.00
Maximum interest coverage ratio under credit facility								3.00
Interest rate on variable rate debt													0.19%
Long-term debt weighted average interest rate														4.86%
Interest rate on senior notes						6.125%					4.90%	4.90%				6.125%	6.125%		7.40%		7.40%
Redemption price of senior notes										1,098					1,235
Par value of note										$ 1,000					$ 1,000
Loss from extinguishment of long-term debt				297														167		51		107
Maximum amount of extinguishment of debt amount in cash tender offer																				100
Cash deposited in trust to redeem debts																							6
Defeasance of principal amount																				88		162
Senior note issued					1,323							500	1	6			500		250
Aggregated purchase price in trust to redeem debts																							263
Proceeds from issuance of debt				0	0	992
Debt (Textual) [Abstract]
Number of manufacturing and office facilities included in leased property				5
Long-term debt				4	1,350
Long-term debt repaid				1,319	79	29
Payment related to capital lease obligation			66
Termination of capital lease			5
Reclassification of noncurrent maturity of long term debt to noncurrent capital lease				57
Debt extinguishment				1,251
Gain recognition of previously deferred gain on terminated interest rate swap				43
Expense Recognition of previously deferred debt issuance costs and unamortized debt discounts				6
Number of forward starting interest rate swaps and treasury lock		3
Number of contracts matured	4
Loss on maturity of contracts	$ 3