Condensed Consolidated Statements of Stockholders' Deficit - USD ($) shares in Millions, $ in Millions | Total | Cumulative Effect, Period of Adoption, Adjustment [Member] | Common stock | Paid-in capital | Retained earnings | Accumulated other comprehensive income |
Common stock outstanding, at beginning of period (shares) at Sep. 30, 2020 | | | 185 | | | |
Balance at beginning of period at Sep. 30, 2020 | $ (76) | $ (2) | $ 2 | $ 24 | $ (110) | $ 8 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | |
Net income | 87 | | | | 87 | |
Dividends paid | (23) | | | | (23) | |
Stock-based compensation plans | (1) | | | (1) | | |
Stock Repurchased and Retired During Period, Shares | | | 2 | | | |
Repurchases of common stock | (58) | | | | (58) | |
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent | 16 | | | | | 16 |
Common stock outstanding, at end of period (shares) at Dec. 31, 2020 | | | 183 | | | |
Balance at end of period at Dec. 31, 2020 | (55) | | $ 2 | 25 | (106) | 24 |
Common stock outstanding, at beginning of period (shares) at Sep. 30, 2020 | | | 185 | | | |
Balance at beginning of period at Sep. 30, 2020 | (76) | $ (2) | $ 2 | 24 | (110) | 8 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | |
Net income | 155 | | | | | |
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent | 8 | | | | | |
Common stock outstanding, at end of period (shares) at Mar. 31, 2021 | | | 181 | | | |
Balance at end of period at Mar. 31, 2021 | (56) | | $ 2 | 29 | (103) | 16 |
Common stock outstanding, at beginning of period (shares) at Dec. 31, 2020 | | | 183 | | | |
Balance at beginning of period at Dec. 31, 2020 | (55) | | $ 2 | 25 | (106) | 24 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | |
Net income | 68 | | | | 68 | |
Dividends paid | (23) | | | | (23) | |
Stock-based compensation plans | (4) | | | (4) | | |
Stock Repurchased and Retired During Period, Shares | | | 2 | | | |
Repurchases of common stock | (42) | | | | (42) | |
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent | (8) | | | | | (8) |
Common stock outstanding, at end of period (shares) at Mar. 31, 2021 | | | 181 | | | |
Balance at end of period at Mar. 31, 2021 | $ (56) | | $ 2 | 29 | (103) | 16 |
Common stock outstanding, at beginning of period (shares) at Sep. 30, 2021 | 180 | | 180 | | | |
Balance at beginning of period at Sep. 30, 2021 | $ 135 | | $ 2 | 35 | 90 | 8 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | |
Net income | 87 | | | | 87 | |
Dividends paid | (23) | | | | (23) | |
Stock-based compensation plans | (2) | | | (2) | | |
Stock Repurchased and Retired During Period, Shares | | | 0 | | | |
Repurchases of common stock | (31) | | | | (31) | |
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent | 1 | | | | | 1 |
Common stock outstanding, at end of period (shares) at Dec. 31, 2021 | | | 180 | | | |
Balance at end of period at Dec. 31, 2021 | $ 167 | | $ 2 | 33 | 123 | 9 |
Common stock outstanding, at beginning of period (shares) at Sep. 30, 2021 | 180 | | 180 | | | |
Balance at beginning of period at Sep. 30, 2021 | $ 135 | | $ 2 | 35 | 90 | 8 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | |
Net income | 168 | | | | | |
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent | $ 7 | | | | | |
Common stock outstanding, at end of period (shares) at Mar. 31, 2022 | 179 | | 179 | | | |
Balance at end of period at Mar. 31, 2022 | $ 200 | | $ 2 | 36 | 147 | 15 |
Common stock outstanding, at beginning of period (shares) at Dec. 31, 2021 | | | 180 | | | |
Balance at beginning of period at Dec. 31, 2021 | 167 | | $ 2 | 33 | 123 | 9 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | |
Net income | 81 | | | | 81 | |
Dividends paid | (22) | | | | (22) | |
Stock-based compensation plans | (3) | | | (3) | | |
Stock Repurchased and Retired During Period, Shares | | | 1 | | | |
Repurchases of common stock | (35) | | | | (35) | |
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent | $ 6 | | | | | 6 |
Common stock outstanding, at end of period (shares) at Mar. 31, 2022 | 179 | | 179 | | | |
Balance at end of period at Mar. 31, 2022 | $ 200 | | $ 2 | $ 36 | $ 147 | $ 15 |