Rationalization Of Operations (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended						12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014 Process Management [Member]	Mar. 31, 2013 Process Management [Member]	Mar. 31, 2014 Process Management [Member]	Mar. 31, 2013 Process Management [Member]	Mar. 31, 2014 Industrial Automation [Member]	Mar. 31, 2013 Industrial Automation [Member]	Mar. 31, 2014 Industrial Automation [Member]	Mar. 31, 2013 Industrial Automation [Member]	Mar. 31, 2014 Network Power [Member]	Mar. 31, 2013 Network Power [Member]	Mar. 31, 2014 Network Power [Member]	Mar. 31, 2013 Network Power [Member]	Mar. 31, 2014 Climate Technologies [Member]	Mar. 31, 2013 Climate Technologies [Member]	Mar. 31, 2014 Climate Technologies [Member]	Mar. 31, 2013 Climate Technologies [Member]	Mar. 31, 2014 Commercial & Residential Solutions [Member]	Mar. 31, 2013 Commercial & Residential Solutions [Member]	Mar. 31, 2014 Commercial & Residential Solutions [Member]	Mar. 31, 2013 Commercial & Residential Solutions [Member]	Mar. 31, 2014 Severance and benefits [Member]	Mar. 31, 2014 Lease and other contract terminations [Member]	Mar. 31, 2014 Vacant facility and other shutdown costs [Member]	Mar. 31, 2014 Start-up and moving costs [Member]	Sep. 30, 2014 Scenario, Forecast [Member] Minimum [Member]	Sep. 30, 2014 Scenario, Forecast [Member] Maximum [Member]
Restructuring Reserve [Roll Forward]
Beginning rationalization of operations liability			$ 32																						$ 27	$ 3	$ 1	$ 1
Rationalization of operations, expense	21	16	34	32	5	4	8	7	3	5	5	10	6	5	10	9	7	1	10	2	0	1	1	4	20	2	4	8
Rationalization of operations, paid			32																						18	2	4	8
Ending rationalization of operations liability	34		34																						29	3	1	1
Expected fiscal year rationalization expense																													$ 70	$ 80