Taxes On Income (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended					12 Months Ended				12 Months Ended		12 Months Ended		12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2011 Windfall Tax Benefits Recognized [Member]	Dec. 31, 2011 Windfall Tax Benefits Not Reflected [Member]	Dec. 31, 2011 Domestic [Member]	Dec. 31, 2011 Foreign [Member]	Dec. 31, 2011 Unrecognized Consolidated Financial Statements [Member]	Dec. 31, 2011 Subject To Section 382 Limitations [Member] Domestic [Member]	Dec. 31, 2011 Expire In 2012 [Member] Foreign [Member]	Dec. 31, 2012 Expire In 2012 [Member] Foreign [Member]	Dec. 31, 2011 Expire Subsequent To 2012 [Member]	Dec. 31, 2011 Expire Subsequent To 2012 [Member] Foreign [Member]	Dec. 31, 2011 Unlimited Life [Member]	Dec. 31, 2011 Unlimited Life [Member] Foreign [Member]
Operating Loss Carryforwards [Line Items]
Foreign pre-tax income	$ 250	$ 115	$ 218
Increase (decrease) in valuation allowance	(8.4)	3.2	4.1
Net operating losses						935	111		784		1		35		75
Net operating profits								8
Undistributed earnings							957
Deferred tax assets relating to tax benefits	1.2
Windfall tax benefits				3.0	33.0
Deferred tax charge (benefit) related to profits that were not permanently reinvested	7.5	(2.4)	23.7
Net operating losses limitations on use						Section 382 of the Internal Revenue Code
Net operating losses expiration date										2012		subsequent to 2012		unlimited life
Decrease in unrecognized tax benefits due to expiring statutes	0.3	0.6
Unrecognized tax benefits that would impact the effective tax rate if recognized	56.4
Indemnification for gross unrecognized tax benefits from sellers of acquired companies	1.4
Tax related interest expense	1.1	1.1
Liability for tax-related interest expense	$ 5.2	$ 4.1