Property, Plant and Equipment (Narrative) (Details) $ in Millions	12 Months Ended
Dec. 31, 2022 USD ($)
Property, Plant and Equipment [Line Items]
Charges related to reduction in physical workspace	$ 192
Impairment of assets and other charges
Property, Plant and Equipment [Line Items]
Charges related to reduction in physical workspace	133
Operation, maintenance and other
Property, Plant and Equipment [Line Items]
Charges related to reduction in physical workspace	42
Depreciation and amortization
Property, Plant and Equipment [Line Items]
Charges related to reduction in physical workspace	$ 17

Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan and expenses resulting from the write-down of assets. Excludes expenses related to a business combination, a discontinued operation or an asset retirement obligation.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

Name:	us-gaap_RestructuringCostsAndAssetImpairmentCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration