Retirement Plans (Tables)

9 Months Ended

Feb. 28, 2019

Retirement Plan Tables [Abstract]

Schedule of Retirement Plan Costs

Our retirement plans costs for the periods ended February 28 were as follows (in millions):

	Three Months Ended				Nine Months Ended
	2019		2018		2019		2018
Defined benefit pension plans, net	$	28	$	39	$	85	$	113
Defined contribution plans		138		135		415		386
Postretirement healthcare plans		19		19		56		56
	$	185	$	193	$	556	$	555

Schedule of Net Periodic Benefit Cost

Net periodic benefit cost of the pension and postretirement healthcare plans for the periods ended February 28 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	$	173		$	169		$	23		$	23		$	9	$	9
Other retirement plans (income) expense:
Interest cost		237			279			13			12			10		10
Expected return on plan assets		(376	)		(406	)		(12	)		(10	)		—		—
Amortization of prior service credit and other		(30	)		(29	)		—			1			—		—
		(169	)		(156	)		1			3			10		10
	$	4		$	13		$	24		$	26		$	19	$	19
	Nine Months Ended
	U.S. Pension Plans						International Pension Plans						Postretirement Healthcare Plans
	2019			2018			2019			2018			2019		2018
Service cost	$	517		$	509		$	72		$	69		$	26	$	27
Other retirement plans (income) expense:
Interest cost		713			836			38			37			30		29
Expected return on plan assets		(1,129	)		(1,218	)		(36	)		(32	)		—		—
Amortization of prior service credit and other		(89	)		(88	)		(1	)		—			—		—
		(505	)		(470	)		1			5			30		29
	$	12		$	39		$	73		$	74		$	56	$	56

Schedule of Tax Qualified Pension Plans Contributions

Contributions to our U.S. Pension Plans for the nine-month periods ended February 28 were as follows (in millions):

	2019		2018
Required	$	—	$	22
Voluntary		1,000		2,478
	$	1,000	$	2,500