Long-Term Debt and Other Borrowings (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2013
Long-Term Debt (Details)
Aggregate principal amount of Senior Notes issued in April 2013	$ 35
Interest rate of Senior Notes issued in April 2013	4.00%
Scheduled maturity date of Senior Notes issued in April 2013	Apr. 29, 2020

Reflects the known or estimated financial effect of the event, or transaction that occurred between the balance sheet date and the date the financial statements are issued or available to be issued.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 855

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 165

-Paragraph 13

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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Period Type:	duration