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LONG-TERM DEBT AND CREDIT FACILITIES - Narrative (Details) |  |  | 3 Months Ended | 12 Months Ended |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 26, 2016 USD ($) | Jul. 31, 2015 USD ($) | May 31, 2016 USD ($) $ / shares Rate | May 31, 2016 USD ($) Rate | May 31, 2015 USD ($) | May 31, 2014 USD ($) | Feb. 28, 2019 | Feb. 28, 2018 | Aug. 31, 2017 | Feb. 28, 2017 | Aug. 31, 2016 | Apr. 22, 2016 USD ($) | Aug. 28, 2015 USD ($) | Oct. 31, 2014 USD ($) Rate
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan, face amount |  |  | $ 145,938,000 | $ 145,938,000 | $ 62,500,000 |  |  |  |  |  |  |  |  |
Proceeds from issuance of debt |  | $ 2,000,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Payment of debt issuance costs |  |  |  | 63,382,000 | 0 | $ 5,961,000 |  |  |  |  |  |  |  |
Other restrictions on payment of dividends | $ / shares |  |  | $ 0.01 |  |  |  |  |  |  |  |  |  |  |
Interest expense, debt |  |  |  | $ 67,900,000 | 39,900,000 | $ 37,500,000 |  |  |  |  |  |  |  |
2016 Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum interest coverage ratio |  |  | 2.25 | 2.25 |  |  |  |  |  |  |  |  |  |
Secured Debt | Delayed Draw Term Loan Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Periodic payment of debt | $ 1,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Secured Debt | Delayed Draw Term Loan Facility Maturing in May 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Periodic payment of debt | 8,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Secured Debt | Term Loan B |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective interest rate percentage | Rate |  |  | 3.94% | 3.94% |  |  |  |  |  |  |  |  |  |
Periodic payment of debt | 2,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Secured Debt | Term Loan A |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective interest rate percentage | Rate |  |  | 2.95% | 2.95% |  |  |  |  |  |  |  |  |  |
Secured Debt | 2015 Term Loan due July XX, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan, face amount | 43,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Unsecured Debt | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan, face amount |  | 1,250,000,000.00 |  |  |  |  |  |  |  |  |  |  |  |
Unsecured Debt | Delayed Draw Term Loan Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan, face amount | 735,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Unsecured Debt | Term Loan B |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan, face amount | $ 1,045,000,000.000 |  |  |  |  |  |  |  |  |  |  |  |  |
Unsecured Debt | Term Loan A |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan, face amount |  | $ 1,750,000,000.00 |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit | Delayed Draw Term Loan Facility | LIBOR |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate percentage at period end | Rate |  |  | 2.91% | 2.91% |  |  |  |  |  |  |  |  |  |
Line of Credit | Revolving Credit Facility Expiring February 2019 | LIBOR |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate percentage at period end | Rate |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.52%
Line of Credit | Corporate Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of amount outstanding |  |  | $ 1,037,000,000 | $ 1,037,000,000 |  |  |  |  |  |  |  |  |  |
Lines of credit facility, available borrowings |  |  | 204,500,000 | 204,500,000 | 484,300,000 |  |  |  |  |  |  |  |  |
Standby Letters of Credit | Revolving Credit Facility Expiring February 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  | 100,000,000 | 100,000,000 |  |  |  |  |  |  |  |  |  |
Standby Letters of Credit | Corporate Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of amount outstanding |  |  | 8,500,000 | 8,500,000 | 7,600,000 |  |  |  |  |  |  |  |  |
Interest Rate Swap |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, amount of hedged item |  |  |  |  |  |  |  |  |  |  |  |  | $ 250,000,000 | $ 500,000,000
Accumulated other comprehensive income related to interest rate swap |  |  |  | 5,900,000 |  |  |  |  |  |  |  |  |  |
Not designated as hedging instrument | Interest Rate Swap |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, fixed interest rate |  |  |  |  |  |  |  |  |  |  |  |  | 1.34% |
Line of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  | 659,100,000 | 659,100,000 |  |  |  |  |  |  |  |  |  |
Lines of credit facility, available borrowings |  |  | 733,200,000 | 733,200,000 |  |  |  |  |  |  |  |  |  |
Repayments of lines of credit |  |  |  | 42,900,000 |  |  |  |  |  |  |  |  |  |
Amount outstanding under lines of credit, current |  |  | $ 378,400,000 | $ 378,400,000 | $ 592,600,000 |  |  |  |  |  |  |  |  |
Short term debt, weighted average interest rate |  |  | 1.80% | 1.80% | 1.50% |  |  |  |  |  |  |  |  |
Line of credit facility, average outstanding amount |  |  |  | $ 302,600,000 |  |  |  |  |  |  |  |  |  |
Heartland Payment Systems, Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  | $ 4,780,000,000 |  |
Scenario, Forecast [Member] | 2016 Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum covenant leverage ratio |  |  |  |  |  |  | 4.00 | 4.25 | 4.5 | 4.75 | 5.0 |  |  |

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