Commitments and Contingencies Commitments and Contingencies Narrative (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011 Vendor Supplied Component Warranty Expense Type [Member]	Dec. 31, 2011 A specific batch of C&I meters that were manufactured with a misaligned automated solder-feeder [Member]	Dec. 31, 2011 Arbitration claims in Sweden [Member]	Dec. 31, 2011 Warranty charge related to certain products in Brazil. [Member]
Product Warranty Expense, Change	$ 2.7
Recovery Associated With Settlement Of Product Claims		5.3
Warranty charge			$ 12.6	$ 6.6	$ 8.6	$ 9.2