Leases (Schedule of Maturity Analysis of Operating and Finance Lease Liabilities) (Detail) $ in Millions	Dec. 31, 2022 USD ($)
Operating Lease Liabilities, Payments Due [Abstract]
Maturity of operating lease liabilities, 2023	$ 4
Maturity of operating lease liabilities, 2024	2
Maturity of operating lease liabilities, 2025	2
Maturity of operating lease liabilities, 2026	2
Maturity of operating lease liabilities, 2027	1
Maturity of operating lease liabilities, after 2027	20
Maturity of operating lease liabilities, total undiscounted lease payments	31
Operating lease liabilities, present value adjustment	(10)
Present value of operating lease liabilities	21
Finance Lease Liabilities, Payments, Due [Abstract]
Maturity of finance lease liabilities, 2023	4
Maturity of finance lease liabilities, 2024	3
Maturity of finance lease liabilities, 2025	2
Maturity of finance lease liabilities, 2026	1
Maturity of finance lease liabilities, 2027	0
Maturity of finance lease liabilities, after 2027	0
Maturity of finance lease liabilities, total undiscounted lease payments	10
Finance lease liabilities, present value adjustment	0
Present value of finance lease liabilities	$ 10

No definition available.

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- 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 https://asc.fasb.org/extlink&oid=128292326&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 https://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977