Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770

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-Publisher FASB

-Name Accounting Standards Codification

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-Name Accounting Principles Board Opinion (APB)

-Number 12

-Paragraph 10

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 43

-Section B

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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-Name Accounting Standards Codification

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Name:	us-gaap_TreasuryStockValueAcquiredCostMethod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Earnings Per Share (Details 2) (Common Stock, USD $)	0 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended
Earnings Per Share (Details 2) (Common Stock, USD $)	Mar. 14, 2011 Share Repurchase Program 2011	May 04, 2013 Share Repurchase Program 2011	Jun. 26, 2012 Share Repurchase Program 2012	May 04, 2013 Share Repurchase Program 2012	May 04, 2013 Share Repurchase Program 2011 and 2012
Share Repurchase Program
Value of common stock authorized to be repurchased, maximum	$ 250,000,000		$ 500,000,000
Number of common stock repurchased (in shares)					882,551
Shares repurchased, aggregate cost					22,100,000
Value of common stock remaining to be repurchased		$ 0		$ 495,800,000