Elective deferrals vested percentage

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- Definition

Number Of Deferred Compensation Plans

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- Definition

Percentage of additional incentive compensation

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- Definition

Percentage of deferred earnings

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- Definition

Percentage Of Earnings Deferred Into Company Stock Units

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- Definition

Percentage Of Earnings Deferred Into Company Stock Units Company Match

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- Definition

Percentage Of Earnings Deferred Into Company Stock Units Deferred In Mutual Funds

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- Definition

Percentage Of Incentive Compensation Deferred Into Company Stock Units

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- Definition

This element represents the amount of recognized equity-based compensation during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized). Alternate captions include the words "stock-based compensation".

+ References

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-Name Accounting Standards Codification
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Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.

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- Definition

Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements.

+ References

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- Definition

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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- Definition

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.

+ References

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- Definition

The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

+ References

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- Definition

Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period.

+ References

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- Definition

Sum of the carrying amounts as of the balance sheet date of all investments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Regulation S-X (SX)
-Number 210
-Article 7
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- Definition

The date when the equity-based award expires as specified in the award agreement, which may be presented in a variety of ways (for example, year, month and year, day, month and year, quarter of a year).

+ References

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- Definition

The maximum vesting term over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition.

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The minimum vesting term over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

+ Details

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

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

+ References

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- Definition

The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the option plan.

+ References

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Employee Incentive, Deferred Compensation, and Retirement Plans (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
Options expire from the date of grant, in years			ten
Awards vesting period in years, minimum			three
Awards vesting period in years, maximum			eight
Shares authorized to grant	10,300,000		10,300,000
Tax benefit related to stock-based compensation recognized in shareholders' equity	$ 1,100,000	$ 400,000	$ 23,600,000	$ 13,100,000
Options granted during the period			0
Options granted during the period	0
Cash proceeds from the exercise of stock options	100,000		600,000
Tax benefits realized from the exercise of stock options	100,000		900,000
Total number of stock units outstanding	14,200,000		14,200,000
Unvested stock units outstanding	2,900,000		2,900,000
Percentage of earnings deferred into company stock units	50.00%		50.00%
Elective deferrals vested percentage	100.00%		100.00%
Options outstanding under the plan	7,600,000		7,600,000
Investments	167,495,000		167,495,000		178,936,000
Deferred compensation liability	27,800,000		27,800,000		23,900,000
Number of deferred compensation plans	2		2
Incentive Stock Award Plans [Member]
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition, Value	6,900,000	16,200,000	16,000,000	31,800,000
Stock Options [Member]
Unrecognized compensation expense related to non-vested options	100,000		100,000
Weighted-average period, compensation cost expected to recognized, in years			0.5
Stock Units [Member]
Unrecognized compensation expense related to non-vested options	103,000,000		103,000,000
Weighted-average period, compensation cost expected to recognized, in years			3.7
Percentage of deferred earnings	1.00%		1.00%
Deferred Compensation Plans [Member]
Awards vesting period in years, minimum			five
Awards vesting period in years, maximum			eight
Percentage of incentive compensation deferred into company stock units	25.00%		25.00%
Percentage of additional incentive compensation	15.00%		15.00%
Options outstanding under the plan	6,400,000		6,400,000
SWAP Plan [Member]
Awards vesting period in years, minimum			three
Awards vesting period in years, maximum			five
Percentage of earnings deferred into company stock units, Company match	25.00%		25.00%
Mutual Funds [Member]
Percentage Of Earnings Deferred Into Company Stock Units Deferred In Mutual Funds	50.00%		50.00%
Investments	$ 35,200,000		$ 35,200,000		$ 32,200,000