Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended							12 Months Ended
	Dec. 31, 2011 matter	Oct. 01, 2011	Jul. 02, 2011	Apr. 02, 2011	Dec. 31, 2010	Jul. 03, 2010	Apr. 03, 2010	Dec. 31, 2011 M Y matter	Dec. 31, 2010	Dec. 31, 2009
Income from continuing operations:
United States								$ 8.0	$ 71.2	$ 253.6
Foreign								161.2	152.5	44.3
Income from continuing operations before income taxes								169.2	223.7	297.9
Current:
United States								20.7	(33.1)	57.3
Foreign								29.3	17.2	13.7
Total current								50.0	(15.9)	71.0
Deferred and other:
United States								(43.1)	65.6	4.1
Foreign								7.4	(4.0)	(1.4)
Total deferred and other								(35.7)	61.6	2.7
Total provision								14.3	45.7	73.7
Reconciliation of income tax computed at the U.S. federal statutory tax rate to effective income tax rate
Tax at U.S. federal statutory rate (as a percent)								35.00%	35.00%	35.00%
State and local taxes, net of U.S. federal benefit (as a percent)								1.30%	2.00%	1.70%
U.S. credits and exemptions (as a percent)								(8.70%)	(0.60%)	(1.50%)
Foreign earnings taxed at lower rates (as a percent)								(5.30%)	(10.80%)	(10.50%)
Audit settlements with taxing authorities (as a percent)								(0.40%)	(0.60%)	(0.90%)
Adjustments to uncertain tax positions (as a percent)								1.50%	(3.60%)	1.40%
Changes in valuation allowance (as a percent)								(18.40%)	(5.30%)	2.00%
Benefit for loss on investment in foreign subsidiary (as a percent)										(1.50%)
Law change regarding deductibility of Medicare Part D expenses (as a percent)									2.80%
Tax on repatriation of foreign earnings (as a percent)								4.10%	1.60%
Other (as a percent)								(0.60%)	(0.10%)	(1.00%)
Effective income tax rate (as a percent)								8.50%	20.40%	24.70%
Deferred tax assets:
Working capital accruals	37.8				39.7			37.8	39.7
Legal, environmental and self-insurance accruals	45.6				40.6			45.6	40.6
Pension, other postretirement and postemployment benefits	169.9				151.2			169.9	151.2
NOL and credit carryforwards	242.5				206.3			242.5	206.3
Payroll and compensation	46.1				48.6			46.1	48.6
Other	71.0				80.1			71.0	80.1
Total deferred tax assets	612.9				566.5			612.9	566.5
Valuation allowance	(124.5)				(162.7)			(124.5)	(162.7)
Net deferred tax assets	488.4				403.8			488.4	403.8
Deferred tax liabilities:
Accelerated depreciation	36.1				25.5			36.1	25.5
Basis difference in affiliates	40.5				38.6			40.5	38.6
Intangibles recorded in acquisitions	344.5				213.9			344.5	213.9
Other	58.9				60.2			58.9	60.2
Total deferred tax liabilities	480.0				338.2			480.0	338.2
Deferred tax assets (liabilities), net	8.4				65.6			8.4	65.6
Operating Loss Carryforwards
Foreign tax credit carryforwards	29.1							29.1
Research credit carryforwards	12.7							12.7
Carryforwards expiring in 2012	6.9							6.9
Carryforwards expiring between 2012 and 2031	728.7							728.7
Decrease in valuation allowance recognized as a reduction in tax expense from continuing operations								31.2	11.7
Decrease in valuation allowance recognized as a (increase) decrease in tax expense from discontinued operations								(7.7)	9.8
Increase (decrease) in valuation allowance								38.2	37.9
Undistributed foreign earnings								1,703.0
Gross unrecognized tax benefits	85.2				95.5			85.2	95.5	120.9
Net unrecognized tax benefits	68.0				77.4			68.0	77.4	105.3
Portion of unrecognized benefits which, if recognized, would impact future effective tax rates	61.7							61.7
Gross accrued interest	12.9				15.6			12.9	15.6	21.9
Net accrued interest	10.1				11.3			10.1	11.3	16.5
Gross interest income included in income tax provision								2.3	4.0	0.7
Reasonably possible amount that unrecognized tax benefits could decrease within next twelve months, low end of range	30.0							30.0
Reasonably possible amount that unrecognized tax benefits could decrease within next twelve months, high end of range	40.0							40.0
Aggregate changes in balance of unrecognized tax benefits
Unrecognized tax benefit - opening balance				95.5			120.9	95.5	120.9	102.9
Gross increases - tax positions in prior period								3.3	13.9	29.8
Gross decreases - tax positions in prior period								(11.4)	(13.4)	(3.2)
Gross increases - tax positions in current period								10.9	8.7	11.2
Settlements								(0.9)	(24.5)	(5.8)
Lapse of statute of limitations								(11.5)	(8.3)	(16.8)
Change due to foreign currency exchange rates								(0.7)	(1.8)	2.8
Unrecognized tax benefit - ending balance	85.2				95.5			85.2	95.5	120.9
Uncertain Tax Positions and Other Tax Matters
Income tax benefit associated with the release of the valuation allowance on existing foreign tax credit carryforwards		27.8						27.8
Tax benefits associated with the conclusion of a Canadian appeals process			2.5					2.5
Tax credits related to expansion of power transformer facility in Waukesha, WI	4.0	2.0	0.9	0.8				7.7
Income tax benefit partially offset by federal income taxes recorded in connection with plan to repatriate a portion of the earnings of a foreign subsidiary		6.9						6.9
Income tax benefit resulting from settlement with taxing authority recorded in continuing operations						22.0			18.2
Income tax benefit resulting from settlement with taxing authority recorded in discontinued operations						7.3	(3.8)		7.3
Favorable impact effective income tax rate related to uncertain tax positions					16.0				16.0
Domestic charge for the taxation of prescription drug costs for retirees that partially offset benefits							6.2		6.2
Repatriation of foreign earnings that partially offset benefits					3.6				3.6
Net tax benefits recognized on expiry of statute of limitations										18.0
Net tax benefits recognized on expiry of statute of limitations attributable to continuing operations										7.9
Net tax benefits recognized on expiry of statute of limitations attributable to discontinuing operations										10.1
Income tax benefit associated with loss on an investment in a foreign subsidiary										4.9
Period within which federal income tax returns related matters are expected to be resolved (in months)								12
Maximum period for which impact on state income tax returns of any federal changes remains subject to examination by various states (in years)								1
Minimum number of matters whose unfavorable resolution could have material adverse effect on the results of operations or cash flows (in matters)	1							1
Minimum
Operating Loss Carryforwards
State income tax returns subject to examination for a period (in years)								3
Maximum
Operating Loss Carryforwards
State income tax returns subject to examination for a period (in years)								5
State and Local Jurisdiction
Operating Loss Carryforwards
Tax loss carryforwards	561.6							561.6
Foreign Country
Operating Loss Carryforwards
Tax loss carryforwards	678.8							678.8
Tax loss carryforwards reported in continuing operations	$ 638.5							$ 638.5