XML 37 R20.htm IDEA: XBRL DOCUMENT v3.23.1

Condensed Consolidated Balance Sheets (Unaudited) - CERC (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Allowance for credit losses	$ 43	$ 38
Accrued unbilled revenues, allowance for credit losses	3	4
CERC
Allowance for credit losses	39	34
Accrued unbilled revenues, allowance for credit losses	$ 2	$ 4

X

- Definition

Allowance for credit losses on accrued unbilled revenues

+ References

No definition available.

+ Details

Name:	cnp_AccruedUnbilledRevenuesAllowanceForCreditLossesCurrent
Namespace Prefix:	cnp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of allowance for credit loss on accounts receivable, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5074-111524

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(4))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	dei_LegalEntityAxis=cnp_CercCorpMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: