Leases - Summary of Future Minimum Lease Payments, Operating and Finance Leases (Details) - USD ($) $ in Millions	Nov. 30, 2019	Jun. 01, 2019
Schedule Of Future Minimum Lease Payments For Operating Leases And Finance Leases [Line Items]
2020 (remainder)	$ 1,262
2021	2,369
2022	2,119
2023	1,879
2024	1,570
Thereafter	7,919
Total lease payments	17,118
Less imputed interest	(2,650)
Present value of lease liability	14,468
Operating Leases
2020 (remainder)	1,249
2021	2,355
2022	2,105
2023	1,866
2024	1,559
Thereafter	7,841
Total lease payments	16,975
Less imputed interest	(2,615)
Present value of lease liability	14,360	$ 14,200
Finance Leases
2020 (remainder)	13
2021	14
2022	14
2023	13
2024	11
Thereafter	78
Total lease payments	143
Less imputed interest	(35)
Present value of lease liability	108
Aircraft and Related Equipment [Member]
Operating Leases
2020 (remainder)	236
2021	253
2022	234
2023	198
2024	102
Thereafter	314
Total lease payments	1,337
Less imputed interest	(107)
Present value of lease liability	1,230
Facilities and Other [Member]
Operating Leases
2020 (remainder)	1,013
2021	2,102
2022	1,871
2023	1,668
2024	1,457
Thereafter	7,527
Total lease payments	15,638
Less imputed interest	(2,508)
Present value of lease liability	$ 13,130

Lessee operating lease and finance lease liability payments due.

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Lessee operating lease and finance lease liability payments due after year five.

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Lessee operating lease and finance lease liability payments due remainder of fiscal year.

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Lessee operating lease and finance lease liability payments due year five.

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Lessee operating lease and finance lease liability payments due year four.

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Lessee operating lease and finance lease liability payments due year two.

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Lessee operating lease and finance lease liability undiscounted excess amount.

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Lessee operating lease and finance lease liability payments due year three.

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Operating lease and finance lease liability.

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Present value of lessee's discounted obligation for lease payments from finance lease.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
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-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980

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Amount of lessee's undiscounted obligation for lease payments for finance lease.

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Amount of lessee's undiscounted obligation for lease payments for finance lease, due after fifth fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for finance lease, due in fifth fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for finance lease, due in fourth fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for finance lease, due in third fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for finance lease, due in second fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for finance lease, due in remainder of fiscal year following latest fiscal year ended.

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-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980

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Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for finance lease.

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Amount of lessee's undiscounted obligation for lease payments for operating lease.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due after fifth fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in fifth fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in fourth fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in third fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in second fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease having an initial or remaining lease term in excess of one year due in remainder of fiscal year following latest fiscal year.

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