Investments - OTTI Textual (Details) (USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended		3 Months Ended			9 Months Ended	12 Months Ended	0 Months Ended
	Sep. 30, 2010	Jun. 10, 2010	Dec. 31, 2010 Common Stock Intermec [Member]	Sep. 30, 2010 Common Stock Intermec [Member]	Jun. 30, 2010 Common Stock Intermec [Member]	Sep. 30, 2011 Common Stock Intermec [Member]	Dec. 31, 2010 Common Stock Intermec [Member]	Sep. 14, 2011 Common Stock Intermec [Member] Pension Plans, Defined Benefit [Member]
Schedule of Available-for-sale Securities [Line Items]
Sales Period Under Pre-Arranged Trading Plan		1 year
Number of Stock for Sale under Pre-Arranged Trading Plan wtih UBS		1,500,000
Sale of Stock, Number of Shares Issued in Transaction			293,760	1,244,096	255,904	3,554,240
Sale of Stock, Percentage of Ownership after Transaction	18.00%
Gain (Loss) on Sale of Investments						$ 8.3	$ 5.4
Defined Benefit Plan, Number of Shares of Equity Securities Contributed by Employer Included in Plan Assets								7,309,764
Gain (Loss) on Sale of Stock in Subsidiary or Equity Method Investee							0.8
Gain (Loss) on Sale of Securities, Net							4.6
Defined Benefit Plan, Gain Loss On Employer Contribution								$ (7.0)