Debt Obligations - Narrative (Detail) - USD ($) | Oct. 31, 2018 | Feb. 07, 2018 | Nov. 02, 2018 | May 04, 2018 | Nov. 03, 2017 | Nov. 02, 2018 | Nov. 03, 2017 | Feb. 02, 2018 |
Debt Instrument [Line Items] | | | | | | | | |
Principal amount of long-term debt | | | $ 1,050,000,000 | | | $ 1,050,000,000 | | $ 1,035,000,000 |
Interest expense | | | 16,000,000 | | $ 11,000,000 | 38,000,000 | $ 32,000,000 | |
Gain (Loss) on Extinguishment of Debt | | | | | | (4,000,000) | 0 | |
Debt issuance costs | | | | | | 13,000,000 | $ 0 | |
Third Amended Credit Agreement | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Credit facility, maximum borrowing capacity | | | 200,000,000 | | | 200,000,000 | | |
Line Of Credit Facility, Merger Feature, Increase Borrowing Capacity | | | $ 200,000,000 | | | $ 200,000,000 | | |
Third Amended Credit Agreement | Maximum | First Term [Member] | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Credit Agreement financial covenant, leverage ratio | | | 3.75 | | | 3.75 | | |
Third Amended Credit Agreement | Maximum | Second Term [Member] | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Credit Agreement financial covenant, leverage ratio | | | 4.5 | | | 4.5 | | |
Third Amended Credit Agreement | Maximum | Third Term [Member] | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Credit Agreement financial covenant, leverage ratio | | | 4 | | | 4 | | |
Third Amended Credit Agreement | Maximum | Fourth Term [Member] | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Credit Agreement financial covenant, leverage ratio | | | 4.25 | | | 4.25 | | |
Second Amended and Restated Credit Agreement | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Debt instrument, financing fee | | | | $ 2,000,000 | | | | |
Debt issuance costs | | | | $ 1,000,000 | | | | |
Third Amended Credit Agreement | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Interest expense | | | $ 5,000,000 | | | | | |
Gain (Loss) on Extinguishment of Debt | | | 4,000,000 | | | | | |
Debt instrument, financing fee | | | 12,000,000 | | | | | |
Debt issuance costs | | | 17,000,000 | | | | | |
Term Loan A Facility due August 2021 | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Principal amount of long-term debt | | | 0 | | | $ 0 | | 635,000,000 |
Term Loan A Facility due August 2021 | Second Amended and Restated Credit Agreement | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Debt instrument, reduction to interest rate margin | | 0.25% | | | | | | |
Term Loan B Facility due May 2022 | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Principal amount of long-term debt | | | 0 | | | 0 | | 400,000,000 |
Term Loan B Facility due May 2022 | Second Amended and Restated Credit Agreement | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Debt instrument, reduction to interest rate margin | | 0.50% | | | | | | |
Interest rate margin under credit agreement | | 2.00% | | | | | | |
Term Loan B Facility Due October Two Thousand Twenty Five | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Principal amount of long-term debt | | | $ 1,050,000,000 | | | $ 1,050,000,000 | | $ 0 |
Debt Instrument Amortization Of Principal and Accrued Interest, Percentage | | | 0.25% | | | 0.25% | | |
Term Loan B Facility Due October Two Thousand Twenty Five | Third Amended Credit Agreement | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Principal amount of long-term debt | | | $ 1,050,000,000 | | | $ 1,050,000,000 | | |
Term Loan A Facility Commitment Due October Two Thousand Twenty Three | Third Amended Credit Agreement | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Principal amount of long-term debt | | | 1,100,000,000 | | | 1,100,000,000 | | |
Long Term Debt, Gross, Merger Termination Feature | | | 618,000,000 | | | 618,000,000 | | |
Revolving Credit Facility | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Revolving credit facility, current | | | $ 0 | | | $ 0 | | |
Revolving Credit Facility | Minimum | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Line of Credit Facility, Commitment Fee Percentage | 0.20% | | | | | | | |
Revolving Credit Facility | Maximum | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Line of Credit Facility, Commitment Fee Percentage | 0.35% | | | | | | | |
Revolving Credit Facility | Second Amended and Restated Credit Agreement | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Debt instrument, reduction to interest rate margin | | 0.25% | | | | | | |
Eurodollar | Term Loan A Facility due August 2021 | Second Amended and Restated Credit Agreement | Minimum | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Interest rate margin under credit agreement | | 1.25% | | | | | | |
Eurodollar | Term Loan A Facility due August 2021 | Second Amended and Restated Credit Agreement | Maximum | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Interest rate margin under credit agreement | | 2.00% | | | | | | |
Eurodollar | Term Loan B Facility due May 2022 | Second Amended and Restated Credit Agreement | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Debt instrument floor rate | | 0.75% | | | | | | |
Base Rate | Term Loan A Facility due August 2021 | Second Amended and Restated Credit Agreement | Minimum | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Interest rate margin under credit agreement | | 0.25% | | | | | | |
Base Rate | Term Loan A Facility due August 2021 | Second Amended and Restated Credit Agreement | Maximum | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Interest rate margin under credit agreement | | 1.00% | | | | | | |
Base Rate | Term Loan B Facility due May 2022 | Second Amended and Restated Credit Agreement | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Interest rate margin under credit agreement | | 1.00% | | | | | | |
Base Rate | Term Loan B Facility Due October Two Thousand Twenty Five | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Interest rate margin under credit agreement | 0.75% | | | | | | | |
Base Rate | Term Loan A Facility Commitment Due October Two Thousand Twenty Three | Minimum | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Interest rate margin under credit agreement | 0.25% | | | | | | | |
Base Rate | Term Loan A Facility Commitment Due October Two Thousand Twenty Three | Maximum | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Interest rate margin under credit agreement | 1.00% | | | | | | | |
London Interbank Offered Rate (LIBOR) [Member] | Term Loan B Facility Due October Two Thousand Twenty Five | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Interest rate margin under credit agreement | 1.75% | | | | | | | |
London Interbank Offered Rate (LIBOR) [Member] | Term Loan A Facility Commitment Due October Two Thousand Twenty Three | Minimum | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Interest rate margin under credit agreement | 1.25% | | | | | | | |
London Interbank Offered Rate (LIBOR) [Member] | Term Loan A Facility Commitment Due October Two Thousand Twenty Three | Maximum | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Interest rate margin under credit agreement | 2.00% | | | | | | | |
Quarterly Periods Beginning January 31, 2020 [Member] | Term Loan A Facility Commitment Due October Two Thousand Twenty Three | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Debt Instrument Amortization Of Principal and Accrued Interest, Percentage | | | 1.25% | | | 1.25% | | |
Quarterly Periods Beginning January 31, 2021 [Member] | Term Loan A Facility Commitment Due October Two Thousand Twenty Three | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Debt Instrument Amortization Of Principal and Accrued Interest, Percentage | | | 1.875% | | | 1.875% | | |
Quarterly Periods Beginning January 31, 2022 [Member] | Term Loan A Facility Commitment Due October Two Thousand Twenty Three | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | |
Debt Instrument Amortization Of Principal and Accrued Interest, Percentage | | | 2.50% | | | 2.50% | | |