Retirement Plans (Tables)

6 Months Ended

Nov. 30, 2019

Retirement Plan Tables [Abstract]

Schedule of Retirement Plan Costs

Our retirement plans costs for the periods ended November 30 were as follows (in millions):

	Three Months Ended				Six Months Ended
	2019		2018		2019		2018
Defined benefit pension plans, net	$	37	$	29	$	74	$	57
Defined contribution plans		136		133		278		277
Postretirement healthcare plans		21		18		43		37
	$	194	$	180	$	395	$	371

Schedule of Net Periodic Benefit Cost

Net periodic benefit cost of the pension and postretirement healthcare plans for the periods ended November 30 included the following components (in millions):

	Three Months Ended
	U.S. Pension Plans						International Pension Plans						Postretirement Healthcare Plans
	2019			2018			2019			2018			2019		2018
Service cost	$	192		$	172		$	24		$	25		$	10	$	8
Other retirement plans (income) expense:
Interest cost		250			238			11			12			11		10
Expected return on plan assets		(401	)		(376	)		(13	)		(12	)		—		—
Amortization of prior service credit and other		(25	)		(30	)		(1	)		—			—		—
		(176	)		(168	)		(3	)		—			11		10
	$	16		$	4		$	21		$	25		$	21	$	18
	Six Months Ended
	U.S. Pension Plans						International Pension Plans						Postretirement Healthcare Plans
	2019			2018			2019			2018			2019		2018
Service cost	$	384		$	344		$	48		$	49		$	21	$	17
Other retirement plans (income) expense:
Interest cost		500			476			22			25			22		20
Expected return on plan assets		(801	)		(753	)		(26	)		(24	)		—		—
Amortization of prior service credit and other		(52	)		(59	)		(1	)		(1	)		—		—
		(353	)		(336	)		(5	)		—			22		20
	$	31		$	8		$	43		$	49		$	43	$	37