Consolidated Statements of Stockholders' Equity - USD ($)
$ in Millions
Total
Common Stock
Treasury Stock
Additional Paid-in Capital
Accumulated Income (Loss)
Accumulated Other Comprehensive Income (Loss)
Total
Noncontrolling Interest
Beginning balance (in shares) at Dec. 31, 2017   98,017,860 (157,812)          
Beginning balance at Dec. 31, 2017 $ 2,348 $ 1 $ (4) $ 1,235 $ (112) $ (26) $ 1,094 $ 1,254
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Issuance of Class A common stock under equity incentive award plan, shares   256,809            
Issuance of Class A common stock under equity incentive award plan, net 0           0  
Repurchase of shares for employee tax withholding, shares     (20,097)          
Repurchase of shares for employee tax withholding 0           0  
Stock-based compensation 1     1     1  
Dividends declared (42)     (18) (24)   (42)  
Acquisitions 11           0 11
Distributions to noncontrolling interests (9)           0 (9)
Net income (loss) (13)       136   136 (149)
Other comprehensive loss, net of tax (2)         (1) (1) (1)
Ending balance (in shares) at Mar. 31, 2018   98,274,669 (177,909)          
Ending balance at Mar. 31, 2018 2,294 $ 1 $ (4) 1,218 0 (27) 1,188 1,106
Beginning balance (in shares) at Dec. 31, 2017   98,017,860 (157,812)          
Beginning balance at Dec. 31, 2017 2,348 $ 1 $ (4) 1,235 (112) (26) 1,094 1,254
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Acquisitions 52       0      
Distributions to noncontrolling interests (29)       0      
Net income (loss) (46)              
Other comprehensive loss, net of tax 12              
Ending balance (in shares) at Sep. 30, 2018   98,274,669 (178,783)          
Ending balance at Sep. 30, 2018 2,184 $ 1 $ (4) 1,171 (13) (16) 1,139 1,045
Beginning balance (in shares) at Mar. 31, 2018   98,274,669 (177,909)          
Beginning balance at Mar. 31, 2018 2,294 $ 1 $ (4) 1,218 0 (27) 1,188 1,106
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Repurchase of shares for employee tax withholding, shares     (437)          
Repurchase of shares for employee tax withholding 0           0  
Stock-based compensation 1     1     1  
Dividends declared (41)     (8) (33)   (41)  
Distributions to noncontrolling interests (11)           0 (11)
Net income (loss) (2)       33   33 (35)
Other comprehensive loss, net of tax (7)         (6) (6) (1)
Ending balance (in shares) at Jun. 30, 2018   98,274,669 (178,346)          
Ending balance at Jun. 30, 2018 2,234 $ 1 $ (4) 1,211 0 (33) 1,175 1,059
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Repurchase of shares for employee tax withholding, shares     (437)          
Repurchase of shares for employee tax withholding 0           0  
Stock-based compensation 1     1     1  
Dividends declared (41)     (41)     (41)  
Acquisitions 41           0 41
Sale of subsidiaries (32)           0 (32)
Distributions to noncontrolling interests (9)           0 (9)
Net income (loss) (31)       (13)   (13) (18)
Other comprehensive loss, net of tax 21         17 17 4
Ending balance (in shares) at Sep. 30, 2018   98,274,669 (178,783)          
Ending balance at Sep. 30, 2018 2,184 $ 1 $ (4) 1,171 (13) (16) 1,139 1,045
Beginning balance (in shares) at Dec. 31, 2018   98,274,669 (223,040)          
Beginning balance at Dec. 31, 2018 2,159 $ 1 $ (5) 1,130 (27) (52) 1,047 1,112
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Issuance of Class A common stock under equity incentive award plan, shares   224,870            
Issuance of Class A common stock under equity incentive award plan, net 0           0  
Repurchase of shares for employee tax withholding, shares     (24,955)          
Repurchase of shares for employee tax withholding 0           0  
Stock-based compensation 1     1     1  
Dividends declared (41)     (41)     (41)  
Contributions from noncontrolling interests 5           0 5
Distributions to noncontrolling interests (11)           0 (11)
Net income (loss) (46)       (30)   (30) (16)
Other comprehensive loss, net of tax (23)         (21) (21) (2)
Ending balance (in shares) at Mar. 31, 2019   98,499,539 (247,995)          
Ending balance at Mar. 31, 2019 2,044 $ 1 $ (5) 1,090 (57) (73) 956 1,088
Beginning balance (in shares) at Dec. 31, 2018   98,274,669 (223,040)          
Beginning balance at Dec. 31, 2018 2,159 $ 1 $ (5) 1,130 (27) (52) 1,047 1,112
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Contributions from noncontrolling interests 24       0      
Distributions to noncontrolling interests (33)       0      
Net income (loss) (147)              
Other comprehensive loss, net of tax (53)              
Ending balance (in shares) at Sep. 30, 2019   98,489,599 (249,481)          
Ending balance at Sep. 30, 2019 1,829 $ 1 $ (5) 1,009 (115) (101) 789 1,040
Beginning balance (in shares) at Mar. 31, 2019   98,499,539 (247,995)          
Beginning balance at Mar. 31, 2019 2,044 $ 1 $ (5) 1,090 (57) (73) 956 1,088
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Forfeitures of Class A common stock under equity incentive award plan (in shares)   (9,343)            
Forfeitures of Class A common stock under equity incentive award plan 0           0  
Repurchase of shares for employee tax withholding, shares     (1,486)          
Repurchase of shares for employee tax withholding 0           0  
Stock-based compensation 1     1     1  
Dividends declared (41)     (41)     (41)  
Distributions to noncontrolling interests (10)           0 (10)
Net income (loss) (30)       (7)   (7) (23)
Other comprehensive loss, net of tax (14)         (14) (14) 0
Ending balance (in shares) at Jun. 30, 2019   98,490,196 (249,481)          
Ending balance at Jun. 30, 2019 1,950 $ 1 $ (5) 1,050 (64) (87) 895 1,055
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Forfeitures of Class A common stock under equity incentive award plan (in shares)   (597)            
Forfeitures of Class A common stock under equity incentive award plan 0           0  
Stock-based compensation 1     1     1  
Dividends declared (42)     (42)     (42)  
Contributions from noncontrolling interests 19           0 19
Distributions to noncontrolling interests (12)           0 (12)
Net income (loss) (71)       (51)   (51) (20)
Other comprehensive loss, net of tax (16)         (14) (14) (2)
Ending balance (in shares) at Sep. 30, 2019   98,489,599 (249,481)          
Ending balance at Sep. 30, 2019 $ 1,829 $ 1 $ (5) $ 1,009 $ (115) $ (101) $ 789 $ 1,040