Debt (Details) (USD $)	0 Months Ended	3 Months Ended
	Jun. 28, 2012	Sep. 30, 2012	Jun. 14, 2012	May 21, 2012
Debt Instrument [Line Items]
Bridge facility				$ 6,750,000,000
Bridge facility duration				364 days
Bridge facility interest rate first possibility		LIBOR based rate plus margin of 1.25%
Bridge facility margin increase - first possibility		90 days
Bridge facility maximum margin increase - first possibility		2.50%
Bridge facility interest rate second possibility		ABR plus LIBOR margin less 1.00%
Deferred finance fees		56,000,000
Refinanced three year revolving credit facility			500,000,000
Refinanced five year revolving credit facility			500,000,000
Previous long-term line of credit		1,500,000,000
Long-term line of credit		2,000,000,000
Proceeds from issuance of debt	600,000,000
New three year revolving credit facility			750,000,000
New five year revolving credit facility			750,000,000
Amount borrowed under Eaton's revolving credit		0
Notes due June 28, 2021 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage		3.47%
Debt instrument, face amount		300,000,000
Notes due June 28, 2023 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage		3.68%
Debt instrument, face amount		$ 300,000,000