Stockholders' Equity 2 (Details) (USD $)
Share data in Millions, unless otherwise specified
1 Months Ended 9 Months Ended 0 Months Ended
May 31, 2014
Dec. 31, 2014
Jan. 02, 2015
Mar. 31, 2014
Equity [Abstract]        
Stock repurchase program, Authorized amount $ 1,000,000,000      
Shares of common stock repurchased   4.3    
Value of common stock repurchased   125,000,000    
Remaining authorized common stock repurchase amount   875,000,000    
Accumulated other comprehensive loss   (333,000,000)   (171,000,000)
Subsequent Event [Member]        
Subsequent Event [Line Items]        
Value of common stock to be delivered in March 2015     $ 75,000,000