Leases (Lessor: Schedule of Minimum Future Payments Due From Customers for Sales-Type, Direct Financing, and Operating Leases) (Details) $ in Millions	Dec. 31, 2019 USD ($)
Leases [Abstract]
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Remainder of Fiscal Year	$ 192
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Two Years	150
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Three Years	126
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Four Years	104
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Five Years	74
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Thereafter	422
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received	1,068
Lessor, Operating Lease, Payments to be Received, Remainder of Fiscal Year	41
Lessor, Operating Lease, Payments to be Received, Two Years	30
Lessor, Operating Lease, Payments to be Received, Three Years	18
Lessor, Operating Lease, Payments to be Received, Four Years	9
Lessor, Operating Lease, Payments to be Received, Five Years	6
Lessor, Operating Lease, Payments to be Received, Thereafter	9
Lessor, Operating Lease, Payments to be Received	113
Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received, Remainder of Fiscal Year	233
Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received, Two Years	180
Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received, Three Years	144
Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received, Four Years	113
Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received, Five Years	80
Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received, Thereafter	431
Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received	$ 1,181

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, Remainder of Fiscal Year

+ 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=77888428&loc=SL77919396-209981

+ Details

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Balance Type:	debit
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- Definition

Amount of lease payments to be received by lessor in fifth fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest statement of financial position date.

+ References

+ Details

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- Definition

Amount of lease payments to be received by lessor in fourth year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

+ Details

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- Definition

Amount of lease payments to be received by lessor in remainder of fiscal year following latest fiscal year for operating lease. Excludes 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=77888428&loc=SL77919396-209981

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Data Type:	xbrli:monetaryItemType
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- Definition

Amount of lease payments to be received by lessor after fifth fiscal year following latest statement of financial position date for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

+ Details

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- Definition

Amount of lease payments to be received by lessor in third fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

+ Details

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- Definition

Amount of lease payments to be received by lessor in second fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

+ Details

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Namespace Prefix:	us-gaap_
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- 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=77888428&loc=SL77919391-209981

+ Details

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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 latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest statement of financial position date.

+ 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 latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

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Namespace Prefix:	us-gaap_
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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 remainder of the fiscal year following latest fiscal year. Excludes interim and annual period when interim periods are reported on a 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=77888428&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 latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest statement of financial position date.

+ 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 latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest statement of financial position date.

+ 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 second fiscal year following latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest statement of financial position date.

+ References

+ Details

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