Contingencies (Lights Cases) (Details)	Oct. 30, 2013 Lights Class Actions [Member] Israel [Member] litigation_case	Nov. 01, 2012 Lights Class Actions [Member] Israel [Member] litigation_case	Oct. 30, 2013 Individual Lights Cases [Member] litigation_case	Nov. 01, 2012 Individual Lights Cases [Member] litigation_case	Oct. 30, 2014 Subsequent Event [Member] Lights Class Actions [Member] Israel [Member] litigation_case	Oct. 30, 2014 Subsequent Event [Member] Individual Lights Cases [Member] litigation_case	Oct. 30, 2014 Subsequent Event [Member] Individual Lights Cases [Member] Chile [Member] litigation_case	Oct. 30, 2014 Subsequent Event [Member] Individual Lights Cases [Member] Italy [Member] litigation_case
Loss Contingencies [Line Items]
Cases brought against PM	1	2	2	7	1	2	1	1