Lease effective termination date.

No definition available.

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- Definition

Leases.

+ References

No definition available.

+ Details

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- Definition

Operating lease expense after tax.

+ References

No definition available.

+ Details

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- Definition

Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

+ References

No definition available.

+ Details

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- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Section 50
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- Definition

Amount of operating lease expense. Excludes sublease income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 4
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-URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918638-209977

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- Definition

Amount of operating lease income from lease payments and variable lease payments paid and payable to lessor. Includes, but is not limited to, variable lease payments not included in measurement of lease receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
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-Section 50
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- Details

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Leases (Narrative) (Detail) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
Leases (Narrative) (Detail) - USD ($) $ in Millions	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2019
Lessor \| New Corporate Office \| Agreement with Lessor to Construct and Lease Corporate Office Property
Leases Disclosure [Line Items]
Amount of financing commitments to fund estimated project costs						$ 465
Leasing arrangement, charge		$ 71
Leasing arrangement, charge after tax		$ 53
Lease effective termination date		2021-04
Power Purchase Arrangement
Leases Disclosure [Line Items]
Rental revenue	$ 58		$ 61	$ 147	$ 146
Depreciation expense	$ 29		$ 26	$ 87	$ 76