Retirement Plans (Reconciliation Of The Benefit Obligation, Plan Assets And The Funded Status Of The Plans) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
Jun. 30, 2011	Dec. 31, 2011 Pension Benefits [Member]	Dec. 31, 2010 Pension Benefits [Member]	Dec. 31, 2009 Pension Benefits [Member]	Dec. 31, 2011 Postretirement Benefits [Member]	Dec. 31, 2010 Postretirement Benefits [Member]	Dec. 31, 2009 Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year		$ 3,583.1	$ 3,168.1		$ 490.3	$ 513.7
Service cost		86.6	80.4	70.1	8.2	12.2	10.3
Interest cost		192.0	184.0	177.6	22.7	28.4	31.0
Plan participants' contributions		1.2	1.2		17.8	16.8
Medicare reimbursements					3.3	3.3
Acquisitions and other			167.2			1.2
Actuarial loss (gain)		306.4	133.8		(22.5)	(39.8)
Plan amendments	81.5	(0.5)	3.3		(72.4)
Curtailments and settlements		(61.6)	(0.4)
Foreign currency translation		(5.4)	4.3		(0.8)	1.8
Benefits paid		(178.2)	(158.8)		(43.5)	(47.3)
Benefit obligation at end of year		3,923.6	3,583.1	3,168.1	403.1	490.3	513.7
Fair value of plan assets at beginning of year		3,029.6	2,654.4		191.9	182.6
Actual return on assets		(44.4)	394.5		(4.7)	26.5
Acquisitions and other			98.0
Employer contributions		44.7	38.8		13.2	13.3
Foreign currency translation		(3.3)	1.5
Fair value of plan assets at end of year		2,849.6	3,029.6	2,654.4	174.7	191.9	182.6
Funded status at end of year		$ (1,074.0)	$ (553.5)		$ (228.4)	$ (298.4)

Defined Benefit Plan, Curtailments and Settlements, Benefit Obligation

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The difference between fair value of plan assets at the end of the period and the fair value at the beginning of the period, adjusted for contributions and payments of benefits during the period, and after adjusting for taxes and other expenses, as applicable.

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The net increase or decrease of changes in the value of either the benefit obligation or the plan assets resulting from experience different from that assumed or from a change in an actuarial assumption, or the consequence of a decision to temporarily deviate from the substantive plan.

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1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date.

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The amount of increase in the benefit obligation attributed to business combinations.

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The amount of increase in the plan assets attributed to a business combination.

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The increase in the fair value of plan assets from contributions made by the employer.

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Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

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The amount of increase or decrease in the benefit obligation attributed to foreign currency changes. The effects of foreign currency exchange rate changes that are to be disclosed are those applicable to plans of a foreign operation whose functional currency is not the reporting currency.

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The amount of increase or decrease in plan assets attributed to foreign currency changes. The effects of foreign currency exchange rate changes that are to be disclosed are those applicable to plans of a foreign operation whose functional currency is not the reporting currency.

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The funded status is measured as the difference between the fair value of plan assets and the benefit obligation. Will normally be the same as the net Defined Benefit Plan, Amounts Recognized in Balance Sheet, Total.

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Amount of the period's gross receipts received from the prescription drug subsidy, which is to be used in the roll forward of the accumulated postretirement benefit obligation of an applicable postretirement benefit plan.

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The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.

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