Consolidated Statements of Income - USD ($) $ in Millions		12 Months Ended
		May 31, 2022		May 31, 2021		May 31, 2020
Income Statement [Abstract]
REVENUE	[1]	$ 93,512		$ 83,959		$ 69,217
OPERATING EXPENSES:
Salaries and employee benefits		32,058		30,173		25,031
Purchased transportation		24,118		21,674		17,466
Rentals and landing fees		4,712		4,155		3,712
Depreciation and amortization		3,970		3,793		3,615
Fuel		5,115		2,882		3,156
Maintenance and repairs		3,372		3,328		2,893
Business realignment costs		278		116
Goodwill and other asset impairment charges						435
Other		13,644		11,981		10,492
TOTAL OPERATING EXPENSES		87,267		78,102		66,800
OPERATING INCOME		6,245	[2]	5,857	[3]	2,417	[4]
OTHER (EXPENSE) INCOME:
Interest expense		(689)		(793)		(672)
Interest income		53		52		55
Other retirement plans (expense) income		(726)		1,983		(122)
Loss on debt extinguishment				(393)
Other, net		13		(32)		(9)
TOTAL OTHER (EXPENSE) INCOME		(1,349)		817		(748)
INCOME BEFORE INCOME TAXES		4,896		6,674		1,669
PROVISION FOR INCOME TAXES		1,070		1,443		383
NET INCOME		$ 3,826		$ 5,231		$ 1,286
BASIC EARNINGS PER COMMON SHARE		$ 14.54		$ 19.79		$ 4.92
DILUTED EARNINGS PER COMMON SHARE		$ 14.33		$ 19.45		$ 4.90

[1] International revenue includes shipments that either originate in or are destined to locations outside the United States, which could include U.S. payors. Noncurrent assets include property and equipment, operating lease right-of-use assets, goodwill, and other long-term assets. Our flight equipment is registered in the U.S. and is included as U.S. assets; however, many of our aircraft operate internationally.

[2] Includes business realignment costs of $278 million included in the FedEx Express segment, as well as a charge of $210 million related to the pre- and post-judgment interest in connection with a FedEx Ground legal matter included in “Corporate, other, and eliminations.” Also includes TNT Express integration expenses of $132 million included in “Corporate, other, and eliminations” and the FedEx Express segment.

[3] Includes TNT Express integration expenses of $210 million included in “Corporate, other, and eliminations” and the FedEx Express segment. Also includes business realignment costs of $116 million included in the FedEx Express segment.

[4] Includes noncash goodwill and other asset impairment charges of $435 million primarily related to goodwill impairment at FedEx Office and from the decision to permanently retire certain aircraft and related engines at FedEx Express. Also includes TNT Express integration expenses of $270 million included in “Corporate, other, and eliminations” and the FedEx Express segment.