Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Stock Awards) (Details)

v2.4.0.8
Stock-Based Compensation (Stock Awards) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
0 Months Ended 3 Months Ended 6 Months Ended 0 Months Ended 6 Months Ended 0 Months Ended 6 Months Ended 0 Months Ended 6 Months Ended 0 Months Ended 6 Months Ended 0 Months Ended 0 Months Ended 0 Months Ended
May 20, 2014
Mar. 27, 2014
Mar. 20, 2014
Mar. 03, 2014
Aug. 02, 2014
Aug. 03, 2013
Aug. 02, 2014
Aug. 03, 2013
Mar. 27, 2014
Stock Options [Member]
Mar. 20, 2014
Stock Options [Member]
Aug. 02, 2014
Stock Options [Member]
Mar. 27, 2014
Stock Options [Member]
Performance-based [Member]
Mar. 20, 2014
Stock Options [Member]
Performance-based [Member]
Aug. 02, 2014
Stock Options [Member]
Performance-based [Member]
May 20, 2014
Restricted Stock Units (RSUs) [Member]
Time-based [Member]
Mar. 27, 2014
Restricted Stock Units (RSUs) [Member]
Time-based [Member]
Mar. 20, 2014
Restricted Stock Units (RSUs) [Member]
Time-based [Member]
Mar. 03, 2014
Restricted Stock Units (RSUs) [Member]
Time-based [Member]
Aug. 02, 2014
Restricted Stock Units (RSUs) [Member]
Time-based [Member]
Mar. 27, 2014
Restricted Stock Units (RSUs) [Member]
Performance-based [Member]
Mar. 20, 2014
Restricted Stock Units (RSUs) [Member]
Performance-based [Member]
Aug. 02, 2014
Restricted Stock Units (RSUs) [Member]
Performance-based [Member]
Mar. 20, 2014
Phantom Shares [Member]
Aug. 02, 2014
Phantom Shares [Member]
May 22, 2014
Director [Member]
Aug. 02, 2014
2014 Long-Term Incentive Plan [Member]
May 18, 2012
2014 Long-Term Incentive Plan [Member]
Stock Awards [Member]
May 18, 2012
2014 Long-Term Incentive Plan [Member]
Options [Member]
May 21, 2014
2014 Equity Inducement Plan [Member]
Restricted Stock Units (RSUs) [Member]
May 20, 2014
2014 Equity Inducement Plan [Member]
Restricted Stock Units (RSUs) [Member]
Time-based [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                                            
Stock awards, number of shares authorized                                                     16,000,000 32,000,000 750,000  
Stock awards, number of shares available for grant                                                   25,200,000        
Stock-based compensation expense         $ 11 $ 18 $ 21 $ 32                                            
Granted, stock awards                             306,000 [1] 84,000 2,328,000 25,000 2,743,000 0 329,000 329,000 2,300,000   157,000         224,000 [1]
Granted, stock options                       185,000 2,322,000 2,507,000                                
Granted, weighted-average exercise price (in dollars per share)                 $ 8.97 $ 8.36 $ 8.41                                      
Granted, weighted average grant date fair value (in dollars per share) $ 8.93 $ 5.59 $ 6.09 $ 7.96     $ 6.23                                   $ 8.60          
Maximum award settlement (in dollars per share)                                             $ 16.72              
Stock awards, fair value remeasured at period end (in dollars per share)                                               $ 9.63            
[1] Includes approximately 224,000 RSUs that were granted under the 2014 Equity Inducement Plan.