Earnings per Share, Anti Dilutive Securities (Details) - $ / shares shares in Thousands	3 Months Ended							9 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Sep. 30, 2015	Sep. 30, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive securities (in shares)	56,353				50,067			47,305	48,853
Dividends per common share (in dollars per share)	$ 0.07	$ 0.07	$ 0.07	$ 0.0625	$ 0.0625	$ 0.0625	$ 0.0625	$ 0.2100	$ 0.1875
Stock options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive securities (in shares)	3,391				4,143			2,125	3,759
Restricted Stock and Performance Shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive securities (in shares)	25,996				18,958			18,214	18,128
Convertible preferred stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive securities (in shares)	26,966				26,966			26,966	26,966