Leases - Schedule Of Maturities Of Lease Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Jan. 01, 2019
Operating Leases
2021	$ 155
2022	135
2023	102
2024	79
2025	62
Thereafter	168
Total lease payments	701
Less: imputed interest	(100)
Present value of lease liabilities	601	$ 725
Finance Leases
2021	4
2022	3
2023	1
2024	0
2025	0
Thereafter	0
Total lease payments	8
Less: imputed interest	0
Present value of lease liabilities	$ 8

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

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=121609121&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=121603541&loc=SL77918627-209977