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LONG-TERM DEBT (Schedule of Debt) (Details) - USD ($) $ in Millions | May 29, 2016 | May 31, 2015
--- | --- | ---
Debt Instrument [Line Items] |  |
Total face value of debt | $ 5,477.2 | $ 7,801.0
Unamortized fair value adjustment of senior debt in connection with Ralcorp | 39.8 | 146.7
Unamortized discounts/premiums | (19.8) | (32.8)
Unamortized debt issuance costs | (14.6) | (30.1)
Adjustment due to hedging activity | 6.6 | 11.8
Less current installments | (571.4) | (1,007.8)
Total long-term debt | 4,917.8 | 6,888.8
4.65% senior debt due January 2043 |  |
Debt Instrument [Line Items] |  |
Total face value of debt | $ 176.7 | $ 737.0
Interest rate | 4.65% | 4.65%
6.625% senior debt due August 2039 |  |
Debt Instrument [Line Items] |  |
Total face value of debt | $ 91.4 | $ 450.0
Interest rate | 6.625% | 6.625%
8.25% senior debt due September 2030 |  |
Debt Instrument [Line Items] |  |
Total face value of debt | $ 300.0 | $ 300.0
Interest rate | 8.25% | 8.25%
7.0% senior debt due October 2028 |  |
Debt Instrument [Line Items] |  |
Total face value of debt | $ 382.2 | $ 382.2
Interest rate | 7.00% | 7.00%
6.7% senior debt due August 2027 |  |
Debt Instrument [Line Items] |  |
Total face value of debt | $ 9.2 | $ 9.2
Interest rate | 6.70% | 6.70%
7.125% senior debt due October 2026 |  |
Debt Instrument [Line Items] |  |
Total face value of debt | $ 262.5 | $ 372.4
Interest rate | 7.125% | 7.125%
3.2% senior debt due January 2023 |  |
Debt Instrument [Line Items] |  |
Total face value of debt | $ 837.0 | $ 1,000.0
Interest rate | 3.20% | 3.20%
3.25% senior debt due September 2022 |  |
Debt Instrument [Line Items] |  |
Total face value of debt | $ 250.0 | $ 250.0
Interest rate | 3.25% | 3.25%
9.75% subordinated debt due March 2021 |  |
Debt Instrument [Line Items] |  |
Total face value of debt | $ 195.9 | $ 195.9
Interest rate | 9.75% | 9.75%
4.95% senior debt due August 2020 |  |
Debt Instrument [Line Items] |  |
Total face value of debt | $ 197.7 | $ 300.0
Interest rate | 4.95% | 4.95%
7.0% senior debt due April 2019 |  |
Debt Instrument [Line Items] |  |
Total face value of debt | $ 335.0 | $ 475.0
Interest rate | 7.00% | 7.00%
2.1% senior debt due March 2018 |  |
Debt Instrument [Line Items] |  |
Total face value of debt | $ 225.0 | $ 225.0
Interest rate | 2.10% | 2.10%
1.9% senior debt due January 2018 |  |
Debt Instrument [Line Items] |  |
Total face value of debt | $ 1,000.0 | $ 1,000.0
Interest rate | 1.90% | 1.90%
5.819% senior debt due June 2017 |  |
Debt Instrument [Line Items] |  |
Total face value of debt | $ 475.0 | $ 475.0
Interest rate | 5.819% | 5.819%
LIBOR plus 0.37% senior notes due July 2016 |  |
Debt Instrument [Line Items] |  |
Total face value of debt | $ 550.0 | $ 550.0
Interest rate | 0.37% | 0.37%
1.3% senior debt due January 2016 |  |
Debt Instrument [Line Items] |  |
Total face value of debt | $ 0.0 | $ 750.0
Interest rate | 1.30% | 1.30%
1.35% senior debt due September 2015 |  |
Debt Instrument [Line Items] |  |
Total face value of debt | $ 0.0 | $ 250.0
Interest rate | 1.35% | 1.35%
2.00% to 9.59% lease financing obligations due on various dates through 2040 |  |
Debt Instrument [Line Items] |  |
Total face value of debt | $ 149.2 | $ 68.4
2.00% to 9.59% lease financing obligations due on various dates through 2040 | Minimum |  |
Debt Instrument [Line Items] |  |
Interest rate | 2.00% | 2.00%
2.00% to 9.59% lease financing obligations due on various dates through 2040 | Maximum |  |
Debt Instrument [Line Items] |  |
Interest rate | 9.59% | 9.59%
Other indebtedness |  |
Debt Instrument [Line Items] |  |
Total face value of debt | $ 40.4 | $ 10.9

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