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SHAREHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions |  |  |  | 3 Months Ended | 9 Months Ended |  |  |
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May 20, 2019 | Feb. 28, 2019 | Dec. 12, 2018 | Jun. 29, 2019 | Mar. 30, 2019 | Dec. 29, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 30, 2017 | Jun. 29, 2019 | Jun. 30, 2018 | Jan. 31, 2019 | Jul. 10, 2018 | Aug. 15, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Description Of Maximum Percentage Of Employee Contributions and Matching Contributions Based Upon Years Of Service |  |  |  |  |  |  |  |  |  | employee contributions and matching Company contributions from 4% to 6% |  |  |  |
Stock repurchase program, authorized amount |  |  |  |  |  |  |  |  |  |  |  | $ 300,000 | $ 200,000 | $ 100,000
Shares repurchased in period (shares) |  |  |  | (1.5) |  |  |  |  |  | (4.0) |  |  |  |
Value of shares acquired |  |  |  | $ 33,177 | $ 26,922 | $ 25,485 | $ 42,584 | $ 21,470 | $ 3,280 | $ 85,600 |  |  |  |
Remaining repurchase authorized amount |  |  |  | 112,100 |  |  |  |  |  | 112,100 |  |  |  |
Cash dividends declared per share (in dollars per share) | $ 0.12 | $ 0.12 | $ 0.12 |  |  |  |  |  |  |  |  |  |  |
Dividend payment |  |  |  | $ (7,800) |  |  |  |  |  | $ (23,902) | $ 0 |  |  |
Relative Total Shareholder Return Average Stock Price Calculation Period |  |  |  |  |  |  |  |  |  | 90 days |  |  |  |
Total Shareholder Return Award Performance Measurement Period |  |  |  |  |  |  |  |  |  | 3 years |  |  |  |
Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay |  |  |  |  |  |  |  |  |  | 4.00% |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award Vesting Percentage |  |  |  | 0.00% |  |  |  |  |  | 0.00% |  |  |  |
Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay |  |  |  |  |  |  |  |  |  | 6.00% |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award Vesting Percentage |  |  |  | 200.00% |  |  |  |  |  | 200.00% |  |  |  |
Equity Incentive Plan 2017 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant |  |  |  | 4.0 |  |  |  |  |  | 4.0 |  |  |  |

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