Long-Term Debt (Details)		6 Months Ended
		Nov. 30, 2015 USD ($)	Nov. 30, 2015 JPY (¥)	May. 31, 2015 USD ($)	Nov. 30, 2014 USD ($)
Debt Instrument [Line Items]
Long-term debt		$ 2,072,000,000			$ 1,186,000,000
Less current maturities		5,000,000		$ 107,000,000	107,000,000
TOTAL LONG-TERM DEBT		$ 2,067,000,000		$ 1,079,000,000	1,079,000,000
Corporate Bond 5.15% Due October 15, 2015
Debt Instrument [Line Items]
Debt Instrument, Maturity Date		Oct. 15, 2015
Corporate Bond 2.25% Due May 1, 2023
Debt Instrument [Line Items]
Debt Instrument, Maturity Date		May 01, 2023
Corporate Bond 3.63% Due May 1, 2043
Debt Instrument [Line Items]
Debt Instrument, Maturity Date		May 01, 2043
Corporate Bond, 3.88%, Due November 1, 2045
Debt Instrument [Line Items]
Debt Instrument, Maturity Date		Nov. 01, 2045
Promissory Note 6.20 % Due April 1, 2017
Debt Instrument [Line Items]
Debt Instrument, Maturity Date		Apr. 01, 2017
Promissory Note 6.79% Due January 1, 2018
Debt Instrument [Line Items]
Debt Instrument, Maturity Date		Jan. 01, 2018
Japanese Yen Note 2.6% Maturing August 20, 2001 Through November 20, 2020
Debt Instrument [Line Items]
Debt Instrument, Maturity Date		Nov. 20, 2020
Japanese Yen Note 2.0% Maturing August 20, 2001 Through November 20, 2020
Debt Instrument [Line Items]
Debt Instrument, Maturity Date		Nov. 20, 2020
Corporate Bond Payable | Corporate Bond 5.15% Due October 15, 2015
Debt Instrument [Line Items]
Original Principal	[1],[2]	$ 100,000,000
Interest Rate	[1],[2]	5.15%	5.15%
Interest Payments	[1],[2]	Semi-Annually
Long-term debt	[1],[2]	$ 0			101,000,000
Corporate Bond Payable | Corporate Bond 2.25% Due May 1, 2023
Debt Instrument [Line Items]
Original Principal	[2],[3]	$ 500,000,000
Interest Rate	[2],[3]	2.25%	2.25%
Interest Payments	[2],[3]	Semi-Annually
Long-term debt	[2],[3]	$ 499,000,000			499,000,000
Corporate Bond Payable | Corporate Bond 3.63% Due May 1, 2043
Debt Instrument [Line Items]
Original Principal	[2],[3]	$ 500,000,000
Interest Rate	[2],[3]	3.63%	3.63%
Interest Payments	[2],[3]	Semi-Annually
Long-term debt	[2],[3]	$ 499,000,000			499,000,000
Corporate Bond Payable | Corporate Bond, 3.88%, Due November 1, 2045
Debt Instrument [Line Items]
Original Principal	[2],[4]	$ 1,000,000,000
Interest Rate	[2],[4]	3.875%	3.875%
Interest Payments	[2],[4]	Semi-Annually
Long-term debt	[2],[4]	$ 991,000,000			0
Notes Payable | Promissory Note 6.20 % Due April 1, 2017
Debt Instrument [Line Items]
Original Principal	[5]	$ 40,000,000
Interest Rate	[5]	6.20%	6.20%
Interest Payments	[5]	Monthly
Long-term debt	[5]	$ 38,000,000			39,000,000
Notes Payable | Promissory Note 6.79% Due January 1, 2018
Debt Instrument [Line Items]
Original Principal	[5]	$ 19,000,000
Interest Rate	[5]	6.79%	6.79%
Interest Payments	[5]	Monthly
Long-term debt	[5]	$ 19,000,000			19,000,000
Notes Payable | Japanese Yen Note 2.6% Maturing August 20, 2001 Through November 20, 2020
Debt Instrument [Line Items]
Original Principal | ¥	[6]		¥ 9,000,000,000
Interest Rate	[6]	2.60%	2.60%
Interest Payments	[6]	Quarterly
Long-term debt	[6]	$ 18,000,000			20,000,000
Notes Payable | Japanese Yen Note 2.0% Maturing August 20, 2001 Through November 20, 2020
Debt Instrument [Line Items]
Original Principal | ¥	[6]		¥ 4,000,000,000
Interest Rate	[6]	2.00%	2.00%
Interest Payments	[6]	Quarterly
Long-term debt	[6]	$ 8,000,000			$ 9,000,000

[1] The Company had entered into interest rate swap agreements whereby the Company received fixed interest payments at the same rate as the note and paid variable interest payments based on the six-month LIBOR plus a spread. The swaps had the same notional amount and maturity date as the corresponding note. On October 15, 2015, the Company repaid the long-term debt which had previously been hedged with these interest rate swaps. Accordingly, as of November 30, 2015, the Company had no interest rate swaps designated as fair value hedges.

[2] These senior unsecured obligations rank equally with the Company's other unsecured and unsubordinated indebtedness.

[3] The bonds are redeemable at the Company's option prior to February 1, 2023 and November 1, 2042, respectively, at a price equal to the greater of (i) 100% of the aggregate principal amount of the notes to be redeemed or (ii) the sum of the present values of the remaining scheduled payments, plus in each case, accrued and unpaid interest. Subsequent to February 1, 2023 and November 1, 2042, respectively, the bonds also feature a par call provision, which allows for the bonds to be redeemed at a price equal to 100% of the aggregate principal amount of the notes being redeemed, plus accrued and unpaid interest.

[4] The bonds are redeemable at the Company's option prior to May 1, 2045 at a price equal to the greater of (i) 100% of the aggregate principal amount of the notes to be redeemed or (ii) the sum of the present values of the remaining scheduled payments, plus in each case, accrued and unpaid interest. Subsequent to May 1, 2045, the bonds also feature a par call provision, which allows for the bonds to be redeemed at a price equal to 100% of the aggregate principal amount of the notes being redeemed, plus accrued and unpaid interest.

[5] The Company assumed a total of $59 million in bonds payable as part of its agreement to purchase certain Corporate properties; this was treated as a non-cash financing transaction. The property serves as collateral for the debt. The purchase of these properties was accounted for as a business combination where the total consideration of $85 million was allocated to the land and buildings acquired; no other tangible or intangible assets or liabilities resulted from the purchase. The bonds mature in 2017 and 2018 and the Company does not have the ability to re-negotiate the terms of the debt agreements and would incur significant financial penalties if the notes were paid-off prior to maturity. Subsequent to November 30, 2015, the notes due January 1, 2018 were legally defeased and an insignificant loss on defeasance will be recognized in the third quarter of fiscal 2016.

[6] NIKE Logistics YK assumed a total of ¥13 billion in loans as part of its agreement to purchase a distribution center in Japan, which serves as collateral for the loans. These loans mature in equal quarterly installments during the period August 20, 2001 through November 20, 2020.