Earnings per Share - Anti-Dilutive Securities (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total Securities	49,495	46,398	48,092
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total Securities	808	1,825	3,139
Restricted stock and performance shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total Securities	21,721	17,607	17,987
Convertible preferred stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total Securities	26,966	26,966	26,966