Lease Commitments - Lease Maturity (Details) $ in Millions	Dec. 31, 2021 USD ($)
Operating Leases
2022	$ 207
2023	175
2024	144
2025	121
2026	110
Thereafter	299
Total undiscounted future minimum lease payments	1,056
Less: Imputed interest	(90)
Present value of lease liabilities	966
Finance Leases
2022	26
2023	20
2024	18
2025	10
2026	0
Thereafter	0
Less: Imputed interest	74
Less: Imputed interest	(9)
Present value of lease liabilities	65
Total
2022	233
2023	195
2024	162
2025	131
2026	110
Thereafter	299
Total undiscounted future minimum lease payments	1,130
Less: Imputed interest	(99)
Present value of lease liabilities	$ 1,031

Finance And Operating Lease Liability, Payments, Net Of Sublease Income, Due Year One

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Financing And Operating Lease Liability, Net Of Sublease Income

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Financing And Operating Lease Liability, Payments, Net Of Sublease Income, Due

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Financing And Operating Lease Liability, Payments, Net Of Sublease Income, Due After Year Five

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Financing And Operating Lease Liability, Payments, Net Of Sublease Income, Due Year Five

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Financing And Operating Lease Liability, Payments, Net Of Sublease Income, Due Year Four

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Financing And Operating Lease Liability, Payments, Net Of Sublease Income, Due Year Three

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Financing And Operating Lease Liability, Payments, Net Of Sublease Income, Due Year Two

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Leases Maturity [Abstract]

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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
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977

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