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Capital Stock (Details) - USD ($)
3 Months Ended 30 Months Ended
Jun. 01, 2016
May. 02, 2016
Apr. 11, 2016
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2016
Feb. 04, 2016
May. 27, 2014
Sep. 18, 2013
Class of Stock [Line Items]                  
Cash dividends paid       $ 19,000,000 $ 16,000,000        
Cash dividends declared (dollars per share)       $ 0.07 $ 0.06        
Payments for repurchase of stock       $ 50,000,000 $ 1,000,000        
Common Stock                  
Class of Stock [Line Items]                  
Cash dividends paid       $ 19,000,000          
Stock repurchase program, authorized amount             $ 1,100,000,000.0 $ 450,000,000 $ 100,000,000
Shares repurchased       1,591,376   16,099,094      
Average price of shares repurchased (dollars per share)       $ 31.42   $ 28.78      
Payments for repurchase of stock       $ 50,000,000   $ 463,000,000      
Subsequent Event | Common Stock                  
Class of Stock [Line Items]                  
Cash dividends declared, date declared     Apr. 11, 2016            
Cash dividends declared (dollars per share)     $ 0.07            
Cash dividends declared     $ 19,000,000            
Dividends payable, date of record   May 02, 2016              
Scenario, Forecast | Common Stock                  
Class of Stock [Line Items]                  
Dividends payable, date to be paid Jun. 01, 2016