Equity

12 Months Ended

Dec. 31, 2012

Equity [Abstract]

Stockholders' Equity Note Disclosure [Text Block]

Equity

Stock Repurchase Activities

In June 2012, the Company’s Board of Directors (the “Board”) approved a stock repurchase program (the "2012 Stock Repurchase Program"), which authorized the Company to repurchase up to $1.0 billion of its common stock. The 2012 Stock Repurchase Program was in addition to the stock repurchase program approved by the Board in February 2010 (the "2010 Stock Repurchase Program"), which authorized the Company to repurchase up to $1.0 billion of its common stock. The 2010 Stock Repurchase Program was in addition to the stock repurchase program approved by the Board in March 2008, which also enabled the Company to repurchase up to $1.0 billion of its common stock. As of December 31, 2012, there is $568.2 million of authorized funds remaining under the Company's Stock Repurchase Programs.

In addition to repurchases under the Company’s Stock Repurchase Programs, there were also repurchases of common stock from the Company's employees in connection with net issuance of shares to satisfy minimum tax withholding obligations for the vesting of certain stock awards.

The following table summarizes the Company's repurchases and retirements of its common stock under its Stock Repurchase Programs and repurchases from net issuances (in millions, except per share amounts):

	Shares Repurchased	Average price per share		Amount Repurchased
2012
Repurchases and retirements of common stock	35.8	$	18.05	$	645.6
Repurchases from net issuances	0.2	$	23.40	$	5.0
2011
Repurchases and retirements of common stock	17.5	$	30.93	$	541.2
Repurchases from net issuances	0.2	$	35.98	$	7.4
2010
Repurchases and retirements of common stock	19.7	$	28.67	$	563.5
Repurchases from net issuances	0.1	$	25.75	$	1.9

All shares of common stock repurchased under the Company’s Stock Repurchase Programs and from its employees in connection with net issuances have been retired. Future share repurchases under the Company’s Stock Repurchase Programs will be subject to a review of the circumstances in place at that time and will be made from time to time in private transactions or open market purchases as permitted by securities laws and other legal requirements. This program may be discontinued at any time. See Note 18, Subsequent Events, for discussion of the Company's stock repurchase activity in 2013.