Consolidated Statements of Comprehensive Income (Loss) - USD ($)
$ in Millions
2 Months Ended 10 Months Ended 12 Months Ended
Dec. 15, 2017
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2016
Net income (loss)   $ 287    
Pension, post-retirement and postemployment benefit-related items, net of income taxes of $(19) for the period from December 15, 2017 through September 30, 2018; $(58) for the period from October 1, 2017 through December 15, 2017; and $(19) for fiscal 2017   51    
Cumulative translation adjustment   (31)    
Change in interest rate swaps, net of income taxes of $1 for the period from December 16, 2017 through September 30, 2018   (2)    
Other comprehensive income (loss)   18    
Elimination of Predecessor Company accumulated other comprehensive loss   0    
Total comprehensive income (loss)   $ 305    
Predecessor        
Net income (loss) $ 2,977   $ (182) $ (730)
Pension, post-retirement and postemployment benefit-related items, net of income taxes of $(19) for the period from December 15, 2017 through September 30, 2018; $(58) for the period from October 1, 2017 through December 15, 2017; and $(19) for fiscal 2017 655   252 (259)
Cumulative translation adjustment 3   (39) (18)
Change in interest rate swaps, net of income taxes of $1 for the period from December 16, 2017 through September 30, 2018 0   0 0
Other comprehensive income (loss) 658   213 (277)
Elimination of Predecessor Company accumulated other comprehensive loss 790   0 0
Total comprehensive income (loss) $ 4,425   $ 31 $ (1,007)