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Earnings per Share Data ("EPS") and Stock Based Compensation (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Compensation cost recognized	$ 4,200,000	$ 3,400,000	$ 7,700,000	$ 6,800,000
Compensation cost recognized, after-tax	2,600,000	2,100,000	4,700,000	4,200,000
Unrecognized compensation cost related to unvested options and restricted stock	36,000,000		36,000,000
Unrecognized compensation cost, remaining weighted average vesting period in years	3.0
Stock options granted during period (net of cancellations)			2,800,000
Weighted-average grant date fair value			$ 11.63
Restricted Stock [Member]
Compensation cost recognized	455,000	867,000	906,000	1,600,000
Compensation cost recognized, after-tax	$ 281,000	$ 538,000	$ 559,000	$ 971,000
Stock options granted during period (net of cancellations)			1,500
Weighted-average grant date fair value			$ 54.29

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Share-based compensation arrangement by share-based payment award compensation cost net of tax.

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As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

+ References

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The weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, using a decimal to express in number of years.

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Equity-based compensation cost during the period with respect to the award, which will be recognized in income (as well as the total recognized tax benefit) or capitalized as part of the cost of an asset.

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Net number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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