Lessor, Leased Property and Equipment (Details) - Land and Building [Member] - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Property, Plant, and Equipment, Lessor Asset under Operating Lease [Line Items]
Property and equipment, at cost	$ 1,536	$ 1,405
Accumulated depreciation	(639)	(578)
Property and equipment, net	$ 897	$ 827

Amount of accumulated depreciation of lessor's underlying asset for which right to use has been conveyed to lessee under operating lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant