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CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - $ / shares
3 Months Ended 12 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Stockholders’ Equity    
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 4,000,000,000 4,000,000,000
Common stock, shares issued (in shares) 2,230,149,554 2,230,102,384
Common stock, shares outstanding (in shares) 2,230,149,554 2,230,102,384
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, shares authorized (in shares) 10,000,000 10,000,000
Preferred stock, shares issued (in shares) 1,600,000 1,600,000
Preferred stock, shares outstanding (in shares) 1,600,000 1,600,000
9.75% Series A Mandatory Convertible, $1,000 per share liquidation preference $ 1,000 $ 1,000
9.75% Series A Mandatory Convertible, $1,000 per share liquidation preference 9.75% 9.75%