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Share-Based Compensation (RSU Activity) (Details) - $ / shares
shares in Thousands
3 Months Ended
Nov. 02, 2019
Nov. 02, 2017
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Options exercisable (shares)     5,835
Shares      
Forfeited     32
Weighted Average Grant Date Fair Value/Share      
Weighted average grant date fair value, forfeited (in dollars per share)     $ 5.78
Weighted average exercise price, options vested and expected to vest (in dollars per share)     $ 8.27
Restricted Stock Units (RSUs)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Options exercisable (shares)     818
Shares      
Outstanding at beginning of the period (shares)     2,002
Granted     4
Vested in period (shares) (1,159) (1,197) (1,159)
Forfeited     17
Outstanding at beginning of the period     830
Weighted Average Grant Date Fair Value/Share      
Weighted average grant date fair value, nonvested, equity instruments other than options, beginning of the period (in dollar per share)     $ 17.45
Weighted average grant date fair value, granted (in dollars per share)     18.82
Weighted average grant date fair value, vested (in dollars per share)     20.88
Weighted average grant date fair value, forfeited (in dollars per share)     12.67
Weighted average grant date fair value, nonvested, equity instruments other than options, end of the period (in dollar per share)     12.76
Weighted average exercise price, options vested and expected to vest (in dollars per share)     $ 12.75