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Amount of unamortized debt discount (premium) and debt issuance costs.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Debt and Lines of Credit - Schedule of Long-term Debt Outstanding (Details) - USD ($) $ in Millions	Dec. 31, 2017	Nov. 30, 2017	May 31, 2017	Dec. 31, 2016	May 31, 2016	May 31, 2015
Debt Instrument [Line Items]
Debt, gross	$ 4,100			$ 3,625
Net unamortized discounts, premiums and debt issuance costs	(23)			(16)
Total debt, including net unamortized discounts, premiums and debt issuance costs	4,077			3,609
Current portion of long-term debt	(500)			(631)
Long-term debt	3,577			2,978
Notes due 2017 at 0.875%
Debt Instrument [Line Items]
Debt, gross	0			250
Notes due 2018 at 1.00%
Debt Instrument [Line Items]
Debt, gross	500			500
Notes due 2019 at 1.65%
Debt Instrument [Line Items]
Debt, gross	750			750
Notes due 2020 at 1.75%
Debt Instrument [Line Items]
Debt, gross	500			500		$ 500
Notes due 2021 at 2.75%
Debt Instrument [Line Items]
Debt, gross	550		$ 300	250
Notes due 2022 at 1.85%
Debt Instrument [Line Items]
Debt, gross	500			500	$ 500
Notes due 2023 at 2.25%
Debt Instrument [Line Items]
Debt, gross	500			500
Notes due 2024 at 2.625%
Debt Instrument [Line Items]
Debt, gross	300		$ 300	0
Notes due 2027 at 2.90%
Debt Instrument [Line Items]
Debt, gross	500	$ 500		0
National Semiconductor \| Notes due 2017 at 6.60% (assumed with National acquisition)
Debt Instrument [Line Items]
Debt, gross	$ 0			$ 375