Leases (Lessor: Schedule of Minimum Future Payments Due From Customers for Sales-Type, Direct Financing, and Operating Leases) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Remainder of Fiscal Year	$ 283
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Two Years	223
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Three Years	162
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Four Years	100
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Five Years	71
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Thereafter	360
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received	1,199
Lessor, Operating Lease, Payments to be Received, Remainder of Fiscal Year	12
Lessor, Operating Lease, Payments to be Received, Two Years	6
Lessor, Operating Lease, Payments to be Received, Three Years	5
Lessor, Operating Lease, Payments to be Received, Four Years	3
Lessor, Operating Lease, Payments to be Received, Five Years	2
Lessor, Operating Lease, Payments to be Received, Thereafter	4
Lessor, Operating Lease, Payments to be Received	32	$ 60
Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received, Remainder of Fiscal Year	295
Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received, Two Years	229
Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received, Three Years	167
Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received, Four Years	103
Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received, Five Years	73
Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received, Thereafter	364
Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received	$ 1,231

Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received

No definition available.

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- Definition

Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received, Five Years

+ References

No definition available.

+ Details

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- Definition

Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received, Four Years

+ References

No definition available.

+ Details

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- Definition

Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received, Next twelve months

+ References

No definition available.

+ Details

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- Definition

Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received, Thereafter

+ References

No definition available.

+ Details

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- Definition

Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received, Three Years

+ References

No definition available.

+ Details

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- Definition

Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received, Two Years

+ References

No definition available.

+ Details

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- References

No definition available.

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- Definition

Amount of lease payments to be received by lessor for operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=124258985&loc=SL77919396-209981

+ Details

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Balance Type:	debit
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- Definition

Amount of lease payment to be received by lessor for operating lease 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).

+ References

+ Details

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- Definition

Amount of lease payment to be received by lessor for operating lease in fourth 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).

+ References

+ Details

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- Definition

Amount of lease payments to be received by lessor in next rolling twelve months following latest statement of financial position date for operating lease. For interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=124258985&loc=SL77919396-209981

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of lease payment to be received by lessor for operating lease after 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).

+ References

+ Details

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- Definition

Amount of lease payment to be received by lessor for operating lease in third 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).

+ References

+ Details

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- Definition

Amount of lease payment to be received by lessor for operating lease 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).

+ References

+ Details

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Period Type:	instant

- Definition

Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=124258985&loc=SL77919391-209981

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases 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).

+ References

+ Details

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- Definition

Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in fourth 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).

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in next rolling twelve months following latest statement of financial position date. For interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=124258985&loc=SL77919391-209981

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- Definition

Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases after 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).

+ References

+ Details

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- Definition

Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in third 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).

+ References

+ Details

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Balance Type:	debit
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- Definition

Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases 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).

+ References

+ Details

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