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Consolidated Statements of Equity - USD ($)
$ in Millions
Common Stock
Additional Paid-in Capital
Treasury Stock
Accumulated Other Comprehensive Loss
Retained Earnings
Non-controlling Interests
Total
Balance at Dec. 31, 2015 $ 1 $ 1,160 $ (467) $ (1,102) $ 2,552 $ 36  
Increase (Decrease) in Stockholders' Equity              
Net income         485 11 $ 496
Dividends declared         (138) (7)  
Share-based compensation, net of issuance   (11) 54       6
Other comprehensive income (loss)       31   (10)  
Balance at Dec. 31, 2016 1 1,149 (413) (1,071) 2,899 30  
Increase (Decrease) in Stockholders' Equity              
Net income         519 13 532
Dividends declared         (159) (15)  
Repurchases of common stock     (123)       (123)
Share-based compensation, net of issuance   (11) 42       6
Other comprehensive income (loss)       58   (2)  
Balance at Dec. 31, 2017 1 1,138 (494) (1,013) 3,259 26 2,917
Increase (Decrease) in Stockholders' Equity              
Net income         443 11 454
Dividends declared         (173) (9)  
Repurchases of common stock   (33) (624)       (657)
Share-based compensation, net of issuance   (5) 27       1
Other comprehensive income (loss)       (134)   (7)  
Other   (4)   (7) 7 (1)  
Balance at Dec. 31, 2018 $ 1 $ 1,096 $ (1,091) $ (1,154) $ 3,536 $ 20 $ 2,408