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EMPLOYEE BENEFIT PLANS - 401(k) and Deferred Compensation Plans (Details) | 12 Months Ended
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Dec. 31, 2017 USD ($) insurance_policy | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
Defined Contribution 401(k) Plan |  |  |
Requisite service period for full-time employees to participate in contribution plan | 3 months |  |
Period of service after which the non-full time employees are eligible to participate in defined contribution plan | 1 year |  |
Requisite service hours for non full-time employees to participate in contribution plan | 1000 hours |  |
Employer's matching contribution on each dollar for the first 6 percent of participant's contribution | 0.50 |  |
Participant's contribution to the plan, eligible for employer's matching contribution of fifty cents | 1 |  |
Maximum percentage of participant contributions eligible for employer contribution match towards defined contribution plan | 6.00% |  |
Company contributions to defined contribution plan | $ 12,100,000 | $ 11,000,000 | $ 10,200,000
Percentage of Rollins, Inc. Common Stock to plan assets | 38.80% | 36.40% | 33.50%
Administrative fees paid (less than) | $ 100,000 | $ 100,000 | $ 100,000
Nonqualified Deferred Compensation Plan |  |  |
Maximum percentage of base salary to be deferred | 50.00% |  |
Maximum percentage of annual bonus to be deferred | 85.00% |  |
Minimum deferral amount per plan year | $ 2,000 |  |
Maximum discretionary contributions by employer | $ 245,000 |  |
Number of life insurance policies | insurance_policy | 70 |  |
Life insurance policies, net face value | $ 43,400,000 |  |
Cash surrender value of life insurance policies | 18,300,000 | 15,700,000 |
Estimated future life insurance payments |  |  |
2018 | 590,000 |  |
2019 | 614,000 |  |
2020 | 638,000 |  |
2021 | 664,000 |  |
2022 | 690,000 |  |
Total | 3,196,000 |  |
Total expense/(income) related to deferred compensation | 241,000 | 230,000 | $ 231,000
Deferred compensation assets | 18,400,000 | 15,900,000 |
Deferred compensation liability | $ 18,400,000 | $ 15,700,000 |

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