Condensed Consolidated Balance Sheet (Unaudited) (USD $) In Millions	Sep. 30, 2011	Dec. 31, 2010
Current Assets [Abstract]
Cash and cash equivalents	$ 511.8	$ 520.7
Short-term investments	6.7	8.8
Accounts receivable, net	455.3	341.8
Inventories, net	331.2	298.4
Deferred Taxes and Other	59.5	56.4
Total current assets	1,364.5	1,226.1
Property, Plant, and Equipment, net	357.3	358.3
Other Assets [Abstract]
Investments	39.3	30.2
Goodwill	722.7	724.0
Intangible assets, net	259.9	273.5
Other long-term assets	66.4	93.7
Total Assets	2,810.1	2,705.8
Current Liabilities [Abstract]
Short-term debt	2.3	1.8
Accounts payable	221.0	160.8
Accrued salaries, wages and employee benefits	60.7	70.4
Accrued insurance	49.7	48.5
Dividends payable	22.4	21.9
Other accrued liabilities	173.7	141.6
Total current liabilities	529.8	445.0
Long-Term Debt	596.2	595.9
Other Non-Current Liabilities	201.6	201.4
Total Liabilities	1,327.6	1,242.3
Hubbell Shareholders' Equity	1,477.1	1,459.2
Noncontrolling interest	5.4	4.3
Total Equity	1,482.5	1,463.5
Total Liabilities and Equity	$ 2,810.1	$ 2,705.8