Taxes on Income (Narrative) (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended	12 Months Ended
	Jan. 02, 2009	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Operating Loss Carryforwards [Line Items]
Unrecognized Tax Benefits		$ 17.2	$ 21.6	$ 27.2	$ 25.6
Effective Income Tax Rate, Continuing Operations		46.00%	39.60%	(113.80%)
Deferred Tax Assets, Operating Loss Carryforwards		1,610.9	1,743.5
Period Considered for Determining Change in Control for Income Tax Purposes	0 years 36 months
Deferred Tax Assets, Valuation Allowance		226.4	186.7
Deferred Tax Assets, Net of Valuation Allowance		1,858.8	1,996.2
Increase in Provision for Income Taxes		79.0
Undistributed Earnings of Foreign Subsidiaries		270.3
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit		6.8
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense		0.6	1.9	0.2
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued		4.2	3.7
Domestic Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards		1,294.3
Operating Loss Carryforwards, Net		3,697.9
Operating Loss Carryforwards		3,775.0
Operating Loss Carry forward Nondeductible Expense, Compensation and Benefits Share Based Compensation Cost		77.1
Operating Loss Carry Forward Unrecognized Excess Tax Benefit Related to Share Based Compensation Cost		27.0
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards		105.8
Tax Credit Carryforward, Deferred Tax Asset		3.0
Foreign Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Tax Credit Carryforward, Valuation Allowance		13.5
Deferred Tax Assets, Operating Loss Carryforwards		248.5
Operating Loss Carryforwards, Net		1,049.0
Operating Loss Carryforwards, Valuation Allowance		200.6
Operating Loss Carryforwards Not Subject to Expiration		775.5
Deferred Tax Assets, Operating Loss Carryforwards, Not Subject to Expiration		170.6
Operating Loss Carryforwards Subject to Expiration		273.5
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration		77.9
Tax Credit Carryforward, Deferred Tax Asset		$ 20.8