2019 Q4 Form 10-K Financial Statement
#000113031020000016 Filed on February 27, 2020
Income Statement
Concept | 2019 Q4 | 2018 Q4 | 2017 Q4 |
---|---|---|---|
Revenue | $2.019B | $1.666B | $2.638B |
YoY Change | 21.19% | -36.85% | 26.77% |
Cost Of Revenue | |||
YoY Change | |||
Gross Profit | |||
YoY Change | |||
Gross Profit Margin | |||
Selling, General & Admin | |||
YoY Change | |||
% of Gross Profit | |||
Research & Development | |||
YoY Change | |||
% of Gross Profit | |||
Depreciation & Amortization | $305.0M | $261.0M | $287.0M |
YoY Change | 16.86% | -9.06% | 13.44% |
% of Gross Profit | |||
Operating Expenses | $1.745B | -$1.480B | $2.330B |
YoY Change | -217.91% | -163.52% | 26.77% |
Operating Profit | $274.0M | $192.0M | $308.0M |
YoY Change | 42.71% | -37.66% | 26.75% |
Interest Expense | -$128.0M | $4.000M | $88.00M |
YoY Change | -3300.0% | -95.45% | -138.26% |
% of Operating Profit | -46.72% | 2.08% | 28.57% |
Other Income/Expense, Net | $8.000M | $10.00M | -$110.0M |
YoY Change | -20.0% | -109.09% | -173.83% |
Pretax Income | $154.0M | $218.0M | $286.0M |
YoY Change | -29.36% | -23.78% | 76.54% |
Income Tax | $17.00M | $70.00M | $103.0M |
% Of Pretax Income | 11.04% | 32.11% | 36.01% |
Net Earnings | $157.0M | $120.0M | $1.296B |
YoY Change | 30.83% | -90.74% | 1183.17% |
Net Earnings / Revenue | 7.78% | 7.2% | 49.13% |
Basic Earnings Per Share | $0.25 | $0.18 | $3.01 |
Diluted Earnings Per Share | $0.25 | $0.18 | $2.99 |
COMMON SHARES | |||
Basic Shares Outstanding | 502.2M shares | 501.2M shares | 431.0M shares |
Diluted Shares Outstanding |
Balance Sheet
Concept | 2019 Q4 | 2018 Q4 | 2017 Q4 |
---|---|---|---|
SHORT-TERM ASSETS | |||
Cash & Short-Term Investments | $1.063B | $4.771B | $1.220B |
YoY Change | -77.72% | 291.07% | -5.72% |
Cash & Equivalents | $241.0M | $4.231B | $260.0M |
Short-Term Investments | $822.0M | $540.0M | $960.0M |
Other Short-Term Assets | $1.594B | $670.0M | $778.0M |
YoY Change | 137.91% | -13.88% | 42.23% |
Inventory | $472.0M | $394.0M | $397.0M |
Prepaid Expenses | |||
Receivables | $702.0M | $586.0M | $1.000B |
Other Receivables | $106.0M | $0.00 | $0.00 |
Total Short-Term Assets | $3.937B | $7.108B | $3.395B |
YoY Change | -44.61% | 109.37% | 16.15% |
LONG-TERM ASSETS | |||
Property, Plant & Equipment | $20.62B | $14.02B | $13.06B |
YoY Change | 47.07% | 7.4% | 6.09% |
Goodwill | $4.882B | $757.0M | $867.0M |
YoY Change | 544.91% | -12.69% | 0.58% |
Intangibles | $321.0M | $65.00M | |
YoY Change | 393.85% | ||
Long-Term Investments | $2.408B | $2.482B | $2.472B |
YoY Change | -2.98% | 0.4% | -1.32% |
Other Assets | $236.0M | $159.0M | $191.0M |
YoY Change | 48.43% | -16.75% | 10.4% |
Total Long-Term Assets | $31.59B | $19.99B | $19.34B |
YoY Change | 58.08% | 3.33% | 2.3% |
TOTAL ASSETS | |||
Total Short-Term Assets | $3.937B | $7.108B | $3.395B |
Total Long-Term Assets | $31.59B | $19.99B | $19.34B |
Total Assets | $35.53B | $27.09B | $22.74B |
YoY Change | 31.14% | 19.16% | 4.16% |
SHORT-TERM LIABILITIES | |||
YoY Change | |||
Accounts Payable | $884.0M | $761.0M | $963.0M |
YoY Change | 16.16% | -20.98% | 46.58% |
Accrued Expenses | $158.0M | $121.0M | $104.0M |
YoY Change | 30.58% | 16.35% | -3.7% |
Deferred Revenue | $124.0M | $84.00M | |
YoY Change | 47.62% | ||
Short-Term Debt | $0.00 | $0.00 | $39.00M |
YoY Change | -100.0% | 11.43% | |
Long-Term Debt Due | $868.0M | $482.0M | $606.0M |
YoY Change | 80.08% | -20.46% | -40.88% |
Total Short-Term Liabilities | $3.978B | $3.385B | $3.069B |
YoY Change | 17.52% | 10.3% | -0.36% |
LONG-TERM LIABILITIES | |||
Long-Term Debt | $14.24B | $8.682B | $8.195B |
YoY Change | 64.06% | 5.94% | 8.8% |
Other Long-Term Liabilities | $738.0M | $403.0M | $357.0M |
YoY Change | 83.13% | 12.89% | 28.42% |
Total Long-Term Liabilities | $14.98B | $9.085B | $8.552B |
YoY Change | 64.91% | 6.23% | 9.5% |
TOTAL LIABILITIES | |||
Total Short-Term Liabilities | $3.978B | $3.385B | $3.069B |
Total Long-Term Liabilities | $14.98B | $9.085B | $8.552B |
Total Liabilities | $18.96B | $12.47B | $11.62B |
YoY Change | 52.04% | 7.31% | 6.71% |
SHAREHOLDERS EQUITY | |||
Retained Earnings | $632.0M | $349.0M | $543.0M |
YoY Change | 81.09% | -35.73% | -181.29% |
Common Stock | $5.000M | $5.000M | $4.000M |
YoY Change | 0.0% | 25.0% | 0.0% |
Preferred Stock | |||
YoY Change | |||
Treasury Stock (at cost) | |||
YoY Change | |||
Treasury Stock Shares | |||
Shareholders Equity | $8.359B | $8.058B | $4.688B |
YoY Change | |||
Total Liabilities & Shareholders Equity | $35.53B | $27.09B | $22.74B |
YoY Change | 31.14% | 19.16% | 4.16% |
Cashflow Statement
Concept | 2019 Q4 | 2018 Q4 | 2017 Q4 |
---|---|---|---|
OPERATING ACTIVITIES | |||
Net Income | $157.0M | $120.0M | $1.296B |
YoY Change | 30.83% | -90.74% | 1183.17% |
Depreciation, Depletion And Amortization | $305.0M | $261.0M | $287.0M |
YoY Change | 16.86% | -9.06% | 13.44% |
Cash From Operating Activities | $552.0M | $457.0M | $389.0M |
YoY Change | 20.79% | 17.48% | -17.41% |
INVESTING ACTIVITIES | |||
Capital Expenditures | -$684.0M | -$530.0M | -$432.0M |
YoY Change | 29.06% | 22.69% | 17.71% |
Acquisitions | |||
YoY Change | |||
Other Investing Activities | $38.00M | -$3.000M | $72.00M |
YoY Change | -1366.67% | -104.17% | 0.0% |
Cash From Investing Activities | -$646.0M | -$533.0M | -$360.0M |
YoY Change | 21.2% | 48.06% | 22.03% |
FINANCING ACTIVITIES | |||
Cash Dividend Paid | |||
YoY Change | |||
Common Stock Issuance & Retirement, Net | |||
YoY Change | |||
Debt Paid & Issued, Net | |||
YoY Change | |||
Cash From Financing Activities | 68.00M | 4.023B | 34.00M |
YoY Change | -98.31% | 11732.35% | -133.66% |
NET CHANGE | |||
Cash From Operating Activities | 552.0M | 457.0M | 389.0M |
Cash From Investing Activities | -646.0M | -533.0M | -360.0M |
Cash From Financing Activities | 68.00M | 4.023B | 34.00M |
Net Change In Cash | -26.00M | 3.947B | 63.00M |
YoY Change | -100.66% | 6165.08% | -16.0% |
FREE CASH FLOW | |||
Cash From Operating Activities | $552.0M | $457.0M | $389.0M |
Capital Expenditures | -$684.0M | -$530.0M | -$432.0M |
Free Cash Flow | $1.236B | $987.0M | $821.0M |
YoY Change | 25.23% | 20.22% | -2.03% |
Facts In Submission
Frame | Concept Type | Concept / XBRL Key | Value | Unit |
---|---|---|---|---|
CY2019 | dei |
Amendment Flag
AmendmentFlag
|
false | |
CY2019 | dei |
Current Fiscal Year End Date
CurrentFiscalYearEndDate
|
--12-31 | |
CY2019 | dei |
Document Fiscal Period Focus
DocumentFiscalPeriodFocus
|
FY | |
CY2019 | dei |
Document Fiscal Year Focus
DocumentFiscalYearFocus
|
2019 | |
CY2019 | dei |
Document Period End Date
DocumentPeriodEndDate
|
2019-12-31 | |
CY2019 | dei |
Entity Central Index Key
EntityCentralIndexKey
|
0001130310 | |
CY2019 | dei |
Entity Incorporation State Country Code
EntityIncorporationStateCountryCode
|
TX | |
CY2018Q4 | us-gaap |
Allowance For Doubtful Accounts Receivable Current
AllowanceForDoubtfulAccountsReceivableCurrent
|
18000000 | USD |
CY2019Q4 | us-gaap |
Allowance For Doubtful Accounts Receivable Current
AllowanceForDoubtfulAccountsReceivableCurrent
|
21000000 | USD |
CY2017 | us-gaap |
Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
|
1.35 | |
CY2018 | us-gaap |
Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
|
1.1200 | |
CY2019 | us-gaap |
Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
|
0.86 | |
CY2017Q4 | us-gaap |
Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
|
0.01 | |
CY2018Q4 | us-gaap |
Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
|
0.01 | |
CY2019Q4 | us-gaap |
Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
|
0.01 | |
CY2017Q4 | us-gaap |
Common Stock Shares Authorized
CommonStockSharesAuthorized
|
1000000000 | shares |
CY2018Q4 | us-gaap |
Common Stock Shares Authorized
CommonStockSharesAuthorized
|
1000000000 | shares |
CY2019Q4 | us-gaap |
Common Stock Shares Authorized
CommonStockSharesAuthorized
|
1000000000 | shares |
CY2018Q4 | us-gaap |
Common Stock Shares Outstanding
CommonStockSharesOutstanding
|
501197784 | shares |
CY2019Q4 | us-gaap |
Common Stock Shares Outstanding
CommonStockSharesOutstanding
|
502242061 | shares |
CY2017 | us-gaap |
Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent
OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent
|
-6000000 | USD |
CY2018 | us-gaap |
Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent
OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent
|
2000000 | USD |
CY2019 | us-gaap |
Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent
OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent
|
-4000000 | USD |
CY2017 | us-gaap |
Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax
OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax
|
-2000000 | USD |
CY2018 | us-gaap |
Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax
OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax
|
-4000000 | USD |
CY2019 | us-gaap |
Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax
OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax
|
-1000000 | USD |
CY2017 | us-gaap |
Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax
OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax
|
0 | USD |
CY2018 | us-gaap |
Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax
OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax
|
0 | USD |
CY2019 | us-gaap |
Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax
OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax
|
0 | USD |
CY2017Q4 | us-gaap |
Preferred Stock Par Or Stated Value Per Share
PreferredStockParOrStatedValuePerShare
|
0.01 | |
CY2018Q4 | us-gaap |
Preferred Stock Par Or Stated Value Per Share
PreferredStockParOrStatedValuePerShare
|
0.01 | |
CY2019Q4 | us-gaap |
Preferred Stock Par Or Stated Value Per Share
PreferredStockParOrStatedValuePerShare
|
0.01 | |
CY2017Q4 | us-gaap |
Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
|
20000000 | shares |
CY2018Q4 | us-gaap |
Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
|
20000000 | shares |
CY2019Q4 | us-gaap |
Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
|
20000000 | shares |
CY2019 | dei |
Document Type
DocumentType
|
10-K | |
CY2019 | dei |
Document Annual Report
DocumentAnnualReport
|
true | |
CY2019 | dei |
Document Transition Report
DocumentTransitionReport
|
false | |
CY2019 | dei |
Entity File Number
EntityFileNumber
|
1-31447 | |
CY2019 | dei |
Entity Registrant Name
EntityRegistrantName
|
CenterPoint Energy, Inc. | |
CY2019 | dei |
Entity Tax Identification Number
EntityTaxIdentificationNumber
|
74-0694415 | |
CY2019 | dei |
Entity Address Address Line1
EntityAddressAddressLine1
|
1111 Louisiana | |
CY2019 | dei |
Entity Address City Or Town
EntityAddressCityOrTown
|
Houston, | |
CY2019 | dei |
Entity Address State Or Province
EntityAddressStateOrProvince
|
TX | |
CY2019 | dei |
Entity Address Postal Zip Code
EntityAddressPostalZipCode
|
77002 | |
CY2019 | dei |
City Area Code
CityAreaCode
|
(713) | |
CY2019 | dei |
Local Phone Number
LocalPhoneNumber
|
207-1111 | |
CY2019 | dei |
Entity Well Known Seasoned Issuer
EntityWellKnownSeasonedIssuer
|
Yes | |
CY2019 | dei |
Entity Voluntary Filers
EntityVoluntaryFilers
|
No | |
CY2019 | dei |
Entity Current Reporting Status
EntityCurrentReportingStatus
|
Yes | |
CY2019 | dei |
Entity Interactive Data Current
EntityInteractiveDataCurrent
|
Yes | |
CY2019 | dei |
Entity Filer Category
EntityFilerCategory
|
Large Accelerated Filer | |
CY2019 | dei |
Entity Small Business
EntitySmallBusiness
|
false | |
CY2019 | dei |
Entity Emerging Growth Company
EntityEmergingGrowthCompany
|
false | |
CY2019 | dei |
Entity Shell Company
EntityShellCompany
|
false | |
CY2019Q2 | dei |
Entity Public Float
EntityPublicFloat
|
14295717409 | USD |
CY2020Q1 | dei |
Entity Common Stock Shares Outstanding
EntityCommonStockSharesOutstanding
|
502243185 | shares |
CY2019 | us-gaap |
Regulated Operating Revenue
RegulatedOperatingRevenue
|
7162000000 | USD |
CY2018 | us-gaap |
Regulated Operating Revenue
RegulatedOperatingRevenue
|
6163000000 | USD |
CY2017 | us-gaap |
Regulated Operating Revenue
RegulatedOperatingRevenue
|
5603000000 | USD |
CY2019 | us-gaap |
Unregulated Operating Revenue
UnregulatedOperatingRevenue
|
5139000000 | USD |
CY2018 | us-gaap |
Unregulated Operating Revenue
UnregulatedOperatingRevenue
|
4426000000 | USD |
CY2017 | us-gaap |
Unregulated Operating Revenue
UnregulatedOperatingRevenue
|
4011000000 | USD |
CY2019 | us-gaap |
Revenues
Revenues
|
12301000000 | USD |
CY2018 | us-gaap |
Revenues
Revenues
|
10589000000 | USD |
CY2017 | us-gaap |
Revenues
Revenues
|
9614000000 | USD |
CY2019 | us-gaap |
Utilities Operating Expense Gas And Petroleum Purchased
UtilitiesOperatingExpenseGasAndPetroleumPurchased
|
1683000000 | USD |
CY2018 | us-gaap |
Utilities Operating Expense Gas And Petroleum Purchased
UtilitiesOperatingExpenseGasAndPetroleumPurchased
|
1410000000 | USD |
CY2017 | us-gaap |
Utilities Operating Expense Gas And Petroleum Purchased
UtilitiesOperatingExpenseGasAndPetroleumPurchased
|
1109000000 | USD |
CY2019 | us-gaap |
Cost Of Goods And Services Sold
CostOfGoodsAndServicesSold
|
4029000000 | USD |
CY2018 | us-gaap |
Cost Of Goods And Services Sold
CostOfGoodsAndServicesSold
|
4364000000 | USD |
CY2017 | us-gaap |
Cost Of Goods And Services Sold
CostOfGoodsAndServicesSold
|
3785000000 | USD |
CY2019 | us-gaap |
Utilities Operating Expense Maintenance Operations And Other Costs And Expenses
UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses
|
3550000000 | USD |
CY2018 | us-gaap |
Utilities Operating Expense Maintenance Operations And Other Costs And Expenses
UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses
|
2335000000 | USD |
CY2017 | us-gaap |
Utilities Operating Expense Maintenance Operations And Other Costs And Expenses
UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses
|
2157000000 | USD |
CY2019 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
1287000000 | USD |
CY2018 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
1243000000 | USD |
CY2017 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
1036000000 | USD |
CY2019 | us-gaap |
Taxes Excluding Income And Excise Taxes
TaxesExcludingIncomeAndExciseTaxes
|
478000000 | USD |
CY2018 | us-gaap |
Taxes Excluding Income And Excise Taxes
TaxesExcludingIncomeAndExciseTaxes
|
406000000 | USD |
CY2017 | us-gaap |
Taxes Excluding Income And Excise Taxes
TaxesExcludingIncomeAndExciseTaxes
|
391000000 | USD |
CY2019 | us-gaap |
Goodwill Impairment Loss
GoodwillImpairmentLoss
|
48000000 | USD |
CY2018 | us-gaap |
Goodwill Impairment Loss
GoodwillImpairmentLoss
|
0 | USD |
CY2017 | us-gaap |
Goodwill Impairment Loss
GoodwillImpairmentLoss
|
0 | USD |
CY2019 | us-gaap |
Costs And Expenses
CostsAndExpenses
|
11075000000 | USD |
CY2018 | us-gaap |
Costs And Expenses
CostsAndExpenses
|
9758000000 | USD |
CY2017 | us-gaap |
Costs And Expenses
CostsAndExpenses
|
8478000000 | USD |
CY2019 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
1226000000 | USD |
CY2018 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
831000000 | USD |
CY2017 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
1136000000 | USD |
CY2019 | us-gaap |
Marketable Securities Gain Loss
MarketableSecuritiesGainLoss
|
282000000 | USD |
CY2018 | us-gaap |
Marketable Securities Gain Loss
MarketableSecuritiesGainLoss
|
-22000000 | USD |
CY2017 | us-gaap |
Marketable Securities Gain Loss
MarketableSecuritiesGainLoss
|
7000000 | USD |
CY2019 | cnp |
Gain Loss On Indexed Debt Securities
GainLossOnIndexedDebtSecurities
|
-292000000 | USD |
CY2018 | cnp |
Gain Loss On Indexed Debt Securities
GainLossOnIndexedDebtSecurities
|
-232000000 | USD |
CY2017 | cnp |
Gain Loss On Indexed Debt Securities
GainLossOnIndexedDebtSecurities
|
49000000 | USD |
CY2019 | us-gaap |
Interest And Debt Expense
InterestAndDebtExpense
|
528000000 | USD |
CY2018 | us-gaap |
Interest And Debt Expense
InterestAndDebtExpense
|
361000000 | USD |
CY2017 | us-gaap |
Interest And Debt Expense
InterestAndDebtExpense
|
313000000 | USD |
CY2019 | cnp |
Interest On Transition And System Restoration Bonds
InterestOnTransitionAndSystemRestorationBonds
|
39000000 | USD |
CY2018 | cnp |
Interest On Transition And System Restoration Bonds
InterestOnTransitionAndSystemRestorationBonds
|
59000000 | USD |
CY2017 | cnp |
Interest On Transition And System Restoration Bonds
InterestOnTransitionAndSystemRestorationBonds
|
77000000 | USD |
CY2019 | us-gaap |
Income Loss From Equity Method Investments
IncomeLossFromEquityMethodInvestments
|
230000000 | USD |
CY2018 | us-gaap |
Income Loss From Equity Method Investments
IncomeLossFromEquityMethodInvestments
|
307000000 | USD |
CY2017 | us-gaap |
Income Loss From Equity Method Investments
IncomeLossFromEquityMethodInvestments
|
265000000 | USD |
CY2019 | us-gaap |
Other Nonoperating Income Expense
OtherNonoperatingIncomeExpense
|
50000000 | USD |
CY2018 | us-gaap |
Other Nonoperating Income Expense
OtherNonoperatingIncomeExpense
|
50000000 | USD |
CY2017 | us-gaap |
Other Nonoperating Income Expense
OtherNonoperatingIncomeExpense
|
-4000000 | USD |
CY2019 | us-gaap |
Nonoperating Income Expense
NonoperatingIncomeExpense
|
-297000000 | USD |
CY2018 | us-gaap |
Nonoperating Income Expense
NonoperatingIncomeExpense
|
-317000000 | USD |
CY2017 | us-gaap |
Nonoperating Income Expense
NonoperatingIncomeExpense
|
-73000000 | USD |
CY2019 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
|
929000000 | USD |
CY2018 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
|
514000000 | USD |
CY2017 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
|
1063000000 | USD |
CY2019 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
138000000 | USD |
CY2018 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
146000000 | USD |
CY2017 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
-729000000 | USD |
CY2019 | us-gaap |
Net Income Loss
NetIncomeLoss
|
791000000 | USD |
CY2018 | us-gaap |
Net Income Loss
NetIncomeLoss
|
368000000 | USD |
CY2017 | us-gaap |
Net Income Loss
NetIncomeLoss
|
1792000000 | USD |
CY2019 | us-gaap |
Preferred Stock Dividends Income Statement Impact
PreferredStockDividendsIncomeStatementImpact
|
117000000 | USD |
CY2018 | us-gaap |
Preferred Stock Dividends Income Statement Impact
PreferredStockDividendsIncomeStatementImpact
|
35000000 | USD |
CY2017 | us-gaap |
Preferred Stock Dividends Income Statement Impact
PreferredStockDividendsIncomeStatementImpact
|
0 | USD |
CY2019 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
674000000 | USD |
CY2018 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
333000000 | USD |
CY2017 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
1792000000 | USD |
CY2019 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
1.34 | |
CY2018 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.74 | |
CY2017 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
4.16 | |
CY2019 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
1.33 | |
CY2018 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.74 | |
CY2017 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
4.13 | |
CY2019 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
502000000 | shares |
CY2018 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
449000000 | shares |
CY2017 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
431000000 | shares |
CY2019 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
505000000 | shares |
CY2018 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
452000000 | shares |
CY2017 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
434000000 | shares |
CY2019 | us-gaap |
Net Income Loss
NetIncomeLoss
|
791000000 | USD |
CY2018 | us-gaap |
Net Income Loss
NetIncomeLoss
|
368000000 | USD |
CY2017 | us-gaap |
Net Income Loss
NetIncomeLoss
|
1792000000 | USD |
CY2019 | us-gaap |
Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent
|
-12000000 | USD |
CY2018 | us-gaap |
Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent
|
10000000 | USD |
CY2017 | us-gaap |
Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent
|
-6000000 | USD |
CY2019 | us-gaap |
Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax
OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax
|
-2000000 | USD |
CY2018 | us-gaap |
Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax
OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax
|
-15000000 | USD |
CY2017 | us-gaap |
Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax
OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax
|
-3000000 | USD |
CY2019 | us-gaap |
Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax
OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax
|
-1000000 | USD |
CY2018 | us-gaap |
Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax
OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax
|
0 | USD |
CY2017 | us-gaap |
Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax
OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax
|
0 | USD |
CY2019 | cnp |
Othercomprehensivelossfromunconsolidatedaffiliatesnetoftax
Othercomprehensivelossfromunconsolidatedaffiliatesnetoftax
|
1000000 | USD |
CY2018 | cnp |
Othercomprehensivelossfromunconsolidatedaffiliatesnetoftax
Othercomprehensivelossfromunconsolidatedaffiliatesnetoftax
|
0 | USD |
CY2017 | cnp |
Othercomprehensivelossfromunconsolidatedaffiliatesnetoftax
Othercomprehensivelossfromunconsolidatedaffiliatesnetoftax
|
0 | USD |
CY2019 | us-gaap |
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
|
10000000 | USD |
CY2018 | us-gaap |
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
|
-25000000 | USD |
CY2017 | us-gaap |
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
|
3000000 | USD |
CY2019 | cnp |
Comprehensive Income Netof Tax Before Preferred Stock Div
ComprehensiveIncomeNetofTaxBeforePreferredStockDiv
|
801000000 | USD |
CY2018 | cnp |
Comprehensive Income Netof Tax Before Preferred Stock Div
ComprehensiveIncomeNetofTaxBeforePreferredStockDiv
|
343000000 | USD |
CY2017 | cnp |
Comprehensive Income Netof Tax Before Preferred Stock Div
ComprehensiveIncomeNetofTaxBeforePreferredStockDiv
|
1795000000 | USD |
CY2019 | us-gaap |
Preferred Stock Dividends And Other Adjustments
PreferredStockDividendsAndOtherAdjustments
|
117000000 | USD |
CY2018 | us-gaap |
Preferred Stock Dividends And Other Adjustments
PreferredStockDividendsAndOtherAdjustments
|
35000000 | USD |
CY2017 | us-gaap |
Preferred Stock Dividends And Other Adjustments
PreferredStockDividendsAndOtherAdjustments
|
0 | USD |
CY2019 | us-gaap |
Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
|
684000000 | USD |
CY2018 | us-gaap |
Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
|
308000000 | USD |
CY2017 | us-gaap |
Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
|
1795000000 | USD |
CY2019Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
241000000 | USD |
CY2018Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
4231000000 | USD |
CY2019Q4 | us-gaap |
Marketable Securities Current
MarketableSecuritiesCurrent
|
822000000 | USD |
CY2018Q4 | us-gaap |
Marketable Securities Current
MarketableSecuritiesCurrent
|
540000000 | USD |
CY2019Q4 | us-gaap |
Accounts Receivable Net Current
AccountsReceivableNetCurrent
|
1249000000 | USD |
CY2018Q4 | us-gaap |
Accounts Receivable Net Current
AccountsReceivableNetCurrent
|
1190000000 | USD |
CY2019Q4 | us-gaap |
Unbilled Receivables Current
UnbilledReceivablesCurrent
|
586000000 | USD |
CY2018Q4 | us-gaap |
Unbilled Receivables Current
UnbilledReceivablesCurrent
|
378000000 | USD |
CY2019Q4 | us-gaap |
Energy Related Inventory Natural Gas In Storage
EnergyRelatedInventoryNaturalGasInStorage
|
277000000 | USD |
CY2018Q4 | us-gaap |
Energy Related Inventory Natural Gas In Storage
EnergyRelatedInventoryNaturalGasInStorage
|
194000000 | USD |
CY2019Q4 | us-gaap |
Inventory Raw Materials And Supplies
InventoryRawMaterialsAndSupplies
|
269000000 | USD |
CY2018Q4 | us-gaap |
Inventory Raw Materials And Supplies
InventoryRawMaterialsAndSupplies
|
200000000 | USD |
CY2019Q4 | us-gaap |
Derivative Assets Current
DerivativeAssetsCurrent
|
136000000 | USD |
CY2018Q4 | us-gaap |
Derivative Assets Current
DerivativeAssetsCurrent
|
100000000 | USD |
CY2019Q4 | us-gaap |
Income Taxes Receivable
IncomeTaxesReceivable
|
106000000 | USD |
CY2018Q4 | us-gaap |
Income Taxes Receivable
IncomeTaxesReceivable
|
0 | USD |
CY2019Q4 | us-gaap |
Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
|
161000000 | USD |
CY2018Q4 | us-gaap |
Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
|
192000000 | USD |
CY2019Q4 | us-gaap |
Assets Current
AssetsCurrent
|
3847000000 | USD |
CY2018Q4 | us-gaap |
Assets Current
AssetsCurrent
|
7025000000 | USD |
CY2019Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
20945000000 | USD |
CY2018Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
14044000000 | USD |
CY2019Q4 | us-gaap |
Goodwill
Goodwill
|
5164000000 | USD |
CY2018Q4 | us-gaap |
Goodwill
Goodwill
|
867000000 | USD |
CY2019Q4 | us-gaap |
Regulatory Assets Noncurrent
RegulatoryAssetsNoncurrent
|
2117000000 | USD |
CY2018Q4 | us-gaap |
Regulatory Assets Noncurrent
RegulatoryAssetsNoncurrent
|
1967000000 | USD |
CY2019Q4 | us-gaap |
Derivative Assets Noncurrent
DerivativeAssetsNoncurrent
|
58000000 | USD |
CY2018Q4 | us-gaap |
Derivative Assets Noncurrent
DerivativeAssetsNoncurrent
|
38000000 | USD |
CY2019Q4 | us-gaap |
Equity Method Investments
EquityMethodInvestments
|
2408000000 | USD |
CY2018Q4 | us-gaap |
Equity Method Investments
EquityMethodInvestments
|
2482000000 | USD |
CY2019Q4 | us-gaap |
Cost Method Investments
CostMethodInvestments
|
363000000 | USD |
CY2018Q4 | us-gaap |
Cost Method Investments
CostMethodInvestments
|
363000000 | USD |
CY2019Q4 | us-gaap |
Intangible Assets Net Excluding Goodwill
IntangibleAssetsNetExcludingGoodwill
|
321000000 | USD |
CY2018Q4 | us-gaap |
Intangible Assets Net Excluding Goodwill
IntangibleAssetsNetExcludingGoodwill
|
65000000 | USD |
CY2019Q4 | us-gaap |
Other Assets Noncurrent
OtherAssetsNoncurrent
|
216000000 | USD |
CY2018Q4 | us-gaap |
Other Assets Noncurrent
OtherAssetsNoncurrent
|
158000000 | USD |
CY2019Q4 | cnp |
Assets Noncurrent Other Than Property Plant And Equipment
AssetsNoncurrentOtherThanPropertyPlantAndEquipment
|
10647000000 | USD |
CY2018Q4 | cnp |
Assets Noncurrent Other Than Property Plant And Equipment
AssetsNoncurrentOtherThanPropertyPlantAndEquipment
|
5940000000 | USD |
CY2019Q4 | us-gaap |
Assets
Assets
|
35439000000 | USD |
CY2018Q4 | us-gaap |
Assets
Assets
|
27009000000 | USD |
CY2019Q4 | cnp |
Transition And System Restoration Bonds Long Term Debt Current
TransitionAndSystemRestorationBondsLongTermDebtCurrent
|
231000000 | USD |
CY2018Q4 | cnp |
Transition And System Restoration Bonds Long Term Debt Current
TransitionAndSystemRestorationBondsLongTermDebtCurrent
|
458000000 | USD |
CY2019Q4 | cnp |
Indexed Debt Current
IndexedDebtCurrent
|
19000000 | USD |
CY2018Q4 | cnp |
Indexed Debt Current
IndexedDebtCurrent
|
24000000 | USD |
CY2019Q4 | us-gaap |
Other Long Term Debt Current
OtherLongTermDebtCurrent
|
618000000 | USD |
CY2018Q4 | us-gaap |
Other Long Term Debt Current
OtherLongTermDebtCurrent
|
0 | USD |
CY2019Q4 | cnp |
Indexed Debt Securities Derivative
IndexedDebtSecuritiesDerivative
|
893000000 | USD |
CY2018Q4 | cnp |
Indexed Debt Securities Derivative
IndexedDebtSecuritiesDerivative
|
601000000 | USD |
CY2019Q4 | us-gaap |
Accounts Payable Current
AccountsPayableCurrent
|
1138000000 | USD |
CY2018Q4 | us-gaap |
Accounts Payable Current
AccountsPayableCurrent
|
1240000000 | USD |
CY2019Q4 | us-gaap |
Taxes Payable Current
TaxesPayableCurrent
|
241000000 | USD |
CY2018Q4 | us-gaap |
Taxes Payable Current
TaxesPayableCurrent
|
204000000 | USD |
CY2019Q4 | us-gaap |
Interest Payable Current
InterestPayableCurrent
|
158000000 | USD |
CY2018Q4 | us-gaap |
Interest Payable Current
InterestPayableCurrent
|
121000000 | USD |
CY2019Q4 | us-gaap |
Dividends Payable Current
DividendsPayableCurrent
|
0 | USD |
CY2018Q4 | us-gaap |
Dividends Payable Current
DividendsPayableCurrent
|
187000000 | USD |
CY2019Q4 | us-gaap |
Customer Deposits Current
CustomerDepositsCurrent
|
125000000 | USD |
CY2018Q4 | us-gaap |
Customer Deposits Current
CustomerDepositsCurrent
|
86000000 | USD |
CY2019Q4 | us-gaap |
Derivative Liabilities Current
DerivativeLiabilitiesCurrent
|
51000000 | USD |
CY2018Q4 | us-gaap |
Derivative Liabilities Current
DerivativeLiabilitiesCurrent
|
126000000 | USD |
CY2019Q4 | us-gaap |
Other Liabilities Current
OtherLiabilitiesCurrent
|
414000000 | USD |
CY2018Q4 | us-gaap |
Other Liabilities Current
OtherLiabilitiesCurrent
|
255000000 | USD |
CY2019Q4 | us-gaap |
Liabilities Current
LiabilitiesCurrent
|
3888000000 | USD |
CY2018Q4 | us-gaap |
Liabilities Current
LiabilitiesCurrent
|
3302000000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Liabilities Noncurrent
DeferredTaxLiabilitiesNoncurrent
|
3928000000 | USD |
CY2018Q4 | us-gaap |
Deferred Tax Liabilities Noncurrent
DeferredTaxLiabilitiesNoncurrent
|
3239000000 | USD |
CY2019Q4 | us-gaap |
Derivative Liabilities Noncurrent
DerivativeLiabilitiesNoncurrent
|
29000000 | USD |
CY2018Q4 | us-gaap |
Derivative Liabilities Noncurrent
DerivativeLiabilitiesNoncurrent
|
5000000 | USD |
CY2019Q4 | us-gaap |
Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent
PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
|
754000000 | USD |
CY2018Q4 | us-gaap |
Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent
PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
|
796000000 | USD |
CY2019Q4 | us-gaap |
Regulatory Liability Noncurrent
RegulatoryLiabilityNoncurrent
|
3474000000 | USD |
CY2018Q4 | us-gaap |
Regulatory Liability Noncurrent
RegulatoryLiabilityNoncurrent
|
2525000000 | USD |
CY2019Q4 | us-gaap |
Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
|
763000000 | USD |
CY2018Q4 | us-gaap |
Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
|
402000000 | USD |
CY2019Q4 | us-gaap |
Liabilities Other Than Longterm Debt Noncurrent
LiabilitiesOtherThanLongtermDebtNoncurrent
|
8948000000 | USD |
CY2018Q4 | us-gaap |
Liabilities Other Than Longterm Debt Noncurrent
LiabilitiesOtherThanLongtermDebtNoncurrent
|
6967000000 | USD |
CY2019Q4 | cnp |
Transition And System Restoration Bonds Long Term Debt Non Current
TransitionAndSystemRestorationBondsLongTermDebtNonCurrent
|
746000000 | USD |
CY2018Q4 | cnp |
Transition And System Restoration Bonds Long Term Debt Non Current
TransitionAndSystemRestorationBondsLongTermDebtNonCurrent
|
977000000 | USD |
CY2019Q4 | us-gaap |
Other Long Term Debt Noncurrent
OtherLongTermDebtNoncurrent
|
13498000000 | USD |
CY2018Q4 | us-gaap |
Other Long Term Debt Noncurrent
OtherLongTermDebtNoncurrent
|
7705000000 | USD |
CY2019Q4 | us-gaap |
Long Term Debt Noncurrent
LongTermDebtNoncurrent
|
14244000000 | USD |
CY2018Q4 | us-gaap |
Long Term Debt Noncurrent
LongTermDebtNoncurrent
|
8682000000 | USD |
CY2019Q4 | us-gaap |
Commitments And Contingencies
CommitmentsAndContingencies
|
USD | |
CY2018Q4 | us-gaap |
Commitments And Contingencies
CommitmentsAndContingencies
|
USD | |
CY2019Q4 | cnp |
Cumulative Preferred Stock
CumulativePreferredStock
|
0 | USD |
CY2018Q4 | cnp |
Cumulative Preferred Stock
CumulativePreferredStock
|
0 | USD |
CY2019Q4 | us-gaap |
Common Stock Value
CommonStockValue
|
5000000 | USD |
CY2018 | cnp |
Indexed Debt Securities Gain Loss
IndexedDebtSecuritiesGainLoss
|
-232000000 | USD |
CY2017 | cnp |
Indexed Debt Securities Gain Loss
IndexedDebtSecuritiesGainLoss
|
49000000 | USD |
CY2018Q4 | us-gaap |
Common Stock Value
CommonStockValue
|
5000000 | USD |
CY2019Q4 | us-gaap |
Additional Paid In Capital
AdditionalPaidInCapital
|
6080000000 | USD |
CY2018Q4 | us-gaap |
Additional Paid In Capital
AdditionalPaidInCapital
|
6072000000 | USD |
CY2019Q4 | us-gaap |
Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
|
632000000 | USD |
CY2018Q4 | us-gaap |
Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
|
349000000 | USD |
CY2019Q4 | us-gaap |
Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
|
-98000000 | USD |
CY2018Q4 | us-gaap |
Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
|
-108000000 | USD |
CY2019Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
8359000000 | USD |
CY2018Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
8058000000 | USD |
CY2019Q4 | us-gaap |
Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
|
35439000000 | USD |
CY2018Q4 | us-gaap |
Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
|
27009000000 | USD |
CY2019 | us-gaap |
Net Income Loss
NetIncomeLoss
|
791000000 | USD |
CY2018 | us-gaap |
Net Income Loss
NetIncomeLoss
|
368000000 | USD |
CY2017 | us-gaap |
Net Income Loss
NetIncomeLoss
|
1792000000 | USD |
CY2019 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
1287000000 | USD |
CY2018 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
1243000000 | USD |
CY2017 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
1036000000 | USD |
CY2019 | us-gaap |
Amortization Of Financing Costs
AmortizationOfFinancingCosts
|
29000000 | USD |
CY2018 | us-gaap |
Amortization Of Financing Costs
AmortizationOfFinancingCosts
|
48000000 | USD |
CY2017 | us-gaap |
Amortization Of Financing Costs
AmortizationOfFinancingCosts
|
24000000 | USD |
CY2019 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
69000000 | USD |
CY2018 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
48000000 | USD |
CY2017 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
-770000000 | USD |
CY2019 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
24000000 | USD |
CY2018 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
0 | USD |
CY2017 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
0 | USD |
CY2019 | us-gaap |
Goodwill Impairment Loss
GoodwillImpairmentLoss
|
48000000 | USD |
CY2018 | us-gaap |
Goodwill Impairment Loss
GoodwillImpairmentLoss
|
0 | USD |
CY2017 | us-gaap |
Goodwill Impairment Loss
GoodwillImpairmentLoss
|
0 | USD |
CY2019 | us-gaap |
Marketable Securities Unrealized Gain Loss Excluding Other Than Temporary Impairments
MarketableSecuritiesUnrealizedGainLossExcludingOtherThanTemporaryImpairments
|
282000000 | USD |
CY2018 | us-gaap |
Marketable Securities Unrealized Gain Loss Excluding Other Than Temporary Impairments
MarketableSecuritiesUnrealizedGainLossExcludingOtherThanTemporaryImpairments
|
-22000000 | USD |
CY2017 | us-gaap |
Marketable Securities Unrealized Gain Loss Excluding Other Than Temporary Impairments
MarketableSecuritiesUnrealizedGainLossExcludingOtherThanTemporaryImpairments
|
7000000 | USD |
CY2019 | cnp |
Indexed Debt Securities Gain Loss
IndexedDebtSecuritiesGainLoss
|
-292000000 | USD |
CY2019 | us-gaap |
Inventory Write Down
InventoryWriteDown
|
4000000 | USD |
CY2018 | us-gaap |
Inventory Write Down
InventoryWriteDown
|
2000000 | USD |
CY2017 | us-gaap |
Inventory Write Down
InventoryWriteDown
|
0 | USD |
CY2019 | us-gaap |
Income Loss From Equity Method Investments
IncomeLossFromEquityMethodInvestments
|
230000000 | USD |
CY2018 | us-gaap |
Income Loss From Equity Method Investments
IncomeLossFromEquityMethodInvestments
|
307000000 | USD |
CY2017 | us-gaap |
Income Loss From Equity Method Investments
IncomeLossFromEquityMethodInvestments
|
265000000 | USD |
CY2019 | us-gaap |
Equity Method Investment Dividends Or Distributions
EquityMethodInvestmentDividendsOrDistributions
|
261000000 | USD |
CY2018 | us-gaap |
Equity Method Investment Dividends Or Distributions
EquityMethodInvestmentDividendsOrDistributions
|
267000000 | USD |
CY2017 | us-gaap |
Equity Method Investment Dividends Or Distributions
EquityMethodInvestmentDividendsOrDistributions
|
0 | USD |
CY2019 | us-gaap |
Pension Contributions
PensionContributions
|
109000000 | USD |
CY2018 | us-gaap |
Pension Contributions
PensionContributions
|
69000000 | USD |
CY2017 | us-gaap |
Pension Contributions
PensionContributions
|
48000000 | USD |
CY2019 | us-gaap |
Increase Decrease In Accounts And Other Receivables
IncreaseDecreaseInAccountsAndOtherReceivables
|
-226000000 | USD |
CY2018 | us-gaap |
Increase Decrease In Accounts And Other Receivables
IncreaseDecreaseInAccountsAndOtherReceivables
|
154000000 | USD |
CY2017 | us-gaap |
Increase Decrease In Accounts And Other Receivables
IncreaseDecreaseInAccountsAndOtherReceivables
|
216000000 | USD |
CY2019 | us-gaap |
Increase Decrease In Inventories
IncreaseDecreaseInInventories
|
52000000 | USD |
CY2018 | us-gaap |
Increase Decrease In Inventories
IncreaseDecreaseInInventories
|
-1000000 | USD |
CY2017 | us-gaap |
Increase Decrease In Inventories
IncreaseDecreaseInInventories
|
7000000 | USD |
CY2019 | us-gaap |
Increase Decrease In Income Taxes Receivable
IncreaseDecreaseInIncomeTaxesReceivable
|
106000000 | USD |
CY2018 | us-gaap |
Increase Decrease In Income Taxes Receivable
IncreaseDecreaseInIncomeTaxesReceivable
|
0 | USD |
CY2017 | us-gaap |
Increase Decrease In Income Taxes Receivable
IncreaseDecreaseInIncomeTaxesReceivable
|
-30000000 | USD |
CY2019 | us-gaap |
Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
|
-455000000 | USD |
CY2018 | us-gaap |
Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
|
220000000 | USD |
CY2017 | us-gaap |
Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
|
136000000 | USD |
CY2019 | us-gaap |
Increase Decrease In Over Under Energy Recovery
IncreaseDecreaseInOverUnderEnergyRecovery
|
-92000000 | USD |
CY2018 | us-gaap |
Increase Decrease In Over Under Energy Recovery
IncreaseDecreaseInOverUnderEnergyRecovery
|
-33000000 | USD |
CY2017 | us-gaap |
Increase Decrease In Over Under Energy Recovery
IncreaseDecreaseInOverUnderEnergyRecovery
|
85000000 | USD |
CY2019 | us-gaap |
Increase Decrease In Derivative Assets And Liabilities
IncreaseDecreaseInDerivativeAssetsAndLiabilities
|
64000000 | USD |
CY2018 | us-gaap |
Increase Decrease In Derivative Assets And Liabilities
IncreaseDecreaseInDerivativeAssetsAndLiabilities
|
-103000000 | USD |
CY2017 | us-gaap |
Increase Decrease In Derivative Assets And Liabilities
IncreaseDecreaseInDerivativeAssetsAndLiabilities
|
84000000 | USD |
CY2019 | us-gaap |
Increase Decrease In Margin Deposits Outstanding
IncreaseDecreaseInMarginDepositsOutstanding
|
56000000 | USD |
CY2018 | us-gaap |
Increase Decrease In Margin Deposits Outstanding
IncreaseDecreaseInMarginDepositsOutstanding
|
-5000000 | USD |
CY2017 | us-gaap |
Increase Decrease In Margin Deposits Outstanding
IncreaseDecreaseInMarginDepositsOutstanding
|
55000000 | USD |
CY2019 | cnp |
Increase Decrease Interest And Taxes Accrued
IncreaseDecreaseInterestAndTaxesAccrued
|
54000000 | USD |
CY2018 | cnp |
Increase Decrease Interest And Taxes Accrued
IncreaseDecreaseInterestAndTaxesAccrued
|
40000000 | USD |
CY2017 | cnp |
Increase Decrease Interest And Taxes Accrued
IncreaseDecreaseInterestAndTaxesAccrued
|
5000000 | USD |
CY2019 | us-gaap |
Increase Decrease In Regulatory Assets And Liabilities
IncreaseDecreaseInRegulatoryAssetsAndLiabilities
|
114000000 | USD |
CY2018 | us-gaap |
Increase Decrease In Regulatory Assets And Liabilities
IncreaseDecreaseInRegulatoryAssetsAndLiabilities
|
-28000000 | USD |
CY2017 | us-gaap |
Increase Decrease In Regulatory Assets And Liabilities
IncreaseDecreaseInRegulatoryAssetsAndLiabilities
|
107000000 | USD |
CY2019 | us-gaap |
Increase Decrease In Other Current Assets
IncreaseDecreaseInOtherCurrentAssets
|
22000000 | USD |
CY2018 | us-gaap |
Increase Decrease In Other Current Assets
IncreaseDecreaseInOtherCurrentAssets
|
0 | USD |
CY2017 | us-gaap |
Increase Decrease In Other Current Assets
IncreaseDecreaseInOtherCurrentAssets
|
3000000 | USD |
CY2019 | us-gaap |
Increase Decrease In Other Current Liabilities
IncreaseDecreaseInOtherCurrentLiabilities
|
-107000000 | USD |
CY2018 | us-gaap |
Increase Decrease In Other Current Liabilities
IncreaseDecreaseInOtherCurrentLiabilities
|
-24000000 | USD |
CY2017 | us-gaap |
Increase Decrease In Other Current Liabilities
IncreaseDecreaseInOtherCurrentLiabilities
|
34000000 | USD |
CY2019 | us-gaap |
Increase Decrease In Other Noncurrent Assets
IncreaseDecreaseInOtherNoncurrentAssets
|
-103000000 | USD |
CY2018 | us-gaap |
Increase Decrease In Other Noncurrent Assets
IncreaseDecreaseInOtherNoncurrentAssets
|
-6000000 | USD |
CY2017 | us-gaap |
Increase Decrease In Other Noncurrent Assets
IncreaseDecreaseInOtherNoncurrentAssets
|
4000000 | USD |
CY2019 | us-gaap |
Increase Decrease In Other Noncurrent Liabilities
IncreaseDecreaseInOtherNoncurrentLiabilities
|
-54000000 | USD |
CY2018 | us-gaap |
Increase Decrease In Other Noncurrent Liabilities
IncreaseDecreaseInOtherNoncurrentLiabilities
|
12000000 | USD |
CY2017 | us-gaap |
Increase Decrease In Other Noncurrent Liabilities
IncreaseDecreaseInOtherNoncurrentLiabilities
|
36000000 | USD |
CY2019 | us-gaap |
Other Operating Activities Cash Flow Statement
OtherOperatingActivitiesCashFlowStatement
|
9000000 | USD |
CY2018 | us-gaap |
Other Operating Activities Cash Flow Statement
OtherOperatingActivitiesCashFlowStatement
|
12000000 | USD |
CY2017 | us-gaap |
Other Operating Activities Cash Flow Statement
OtherOperatingActivitiesCashFlowStatement
|
24000000 | USD |
CY2019 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
1638000000 | USD |
CY2018 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
2136000000 | USD |
CY2017 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
1417000000 | USD |
CY2019 | us-gaap |
Payments To Acquire Productive Assets
PaymentsToAcquireProductiveAssets
|
2506000000 | USD |
CY2018 | us-gaap |
Payments To Acquire Productive Assets
PaymentsToAcquireProductiveAssets
|
1651000000 | USD |
CY2017 | us-gaap |
Payments To Acquire Productive Assets
PaymentsToAcquireProductiveAssets
|
1426000000 | USD |
CY2019 | us-gaap |
Payments To Acquire Businesses Net Of Cash Acquired
PaymentsToAcquireBusinessesNetOfCashAcquired
|
5991000000 | USD |
CY2018 | us-gaap |
Payments To Acquire Businesses Net Of Cash Acquired
PaymentsToAcquireBusinessesNetOfCashAcquired
|
0 | USD |
CY2017 | us-gaap |
Payments To Acquire Businesses Net Of Cash Acquired
PaymentsToAcquireBusinessesNetOfCashAcquired
|
132000000 | USD |
CY2019 | us-gaap |
Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital
ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital
|
42000000 | USD |
CY2018 | us-gaap |
Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital
ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital
|
30000000 | USD |
CY2017 | us-gaap |
Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital
ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital
|
297000000 | USD |
CY2019 | us-gaap |
Proceeds From Sale And Maturity Of Marketable Securities
ProceedsFromSaleAndMaturityOfMarketableSecurities
|
0 | USD |
CY2018 | us-gaap |
Proceeds From Sale And Maturity Of Marketable Securities
ProceedsFromSaleAndMaturityOfMarketableSecurities
|
398000000 | USD |
CY2017 | us-gaap |
Proceeds From Sale And Maturity Of Marketable Securities
ProceedsFromSaleAndMaturityOfMarketableSecurities
|
0 | USD |
CY2019 | us-gaap |
Proceeds From Sale Of Property Plant And Equipment
ProceedsFromSaleOfPropertyPlantAndEquipment
|
5000000 | USD |
CY2018 | us-gaap |
Proceeds From Sale Of Property Plant And Equipment
ProceedsFromSaleOfPropertyPlantAndEquipment
|
0 | USD |
CY2017 | us-gaap |
Proceeds From Sale Of Property Plant And Equipment
ProceedsFromSaleOfPropertyPlantAndEquipment
|
0 | USD |
CY2019 | us-gaap |
Payments To Acquire Investments
PaymentsToAcquireInvestments
|
6000000 | USD |
CY2018 | us-gaap |
Payments To Acquire Investments
PaymentsToAcquireInvestments
|
0 | USD |
CY2017 | us-gaap |
Payments To Acquire Investments
PaymentsToAcquireInvestments
|
0 | USD |
CY2019 | us-gaap |
Payments For Proceeds From Other Investing Activities
PaymentsForProceedsFromOtherInvestingActivities
|
-35000000 | USD |
CY2018 | us-gaap |
Payments For Proceeds From Other Investing Activities
PaymentsForProceedsFromOtherInvestingActivities
|
-16000000 | USD |
CY2017 | us-gaap |
Payments For Proceeds From Other Investing Activities
PaymentsForProceedsFromOtherInvestingActivities
|
-4000000 | USD |
CY2019 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
-8421000000 | USD |
CY2018 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
-1207000000 | USD |
CY2018 | us-gaap |
Proceeds From Repayments Of Short Term Debt
ProceedsFromRepaymentsOfShortTermDebt
|
-39000000 | USD |
CY2017 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
-1257000000 | USD |
CY2019 | us-gaap |
Proceeds From Repayments Of Short Term Debt
ProceedsFromRepaymentsOfShortTermDebt
|
0 | USD |
CY2017 | us-gaap |
Proceeds From Repayments Of Short Term Debt
ProceedsFromRepaymentsOfShortTermDebt
|
4000000 | USD |
CY2019 | us-gaap |
Proceeds From Repayments Of Commercial Paper
ProceedsFromRepaymentsOfCommercialPaper
|
1891000000 | USD |
CY2018 | us-gaap |
Proceeds From Repayments Of Commercial Paper
ProceedsFromRepaymentsOfCommercialPaper
|
-1543000000 | USD |
CY2017 | us-gaap |
Proceeds From Repayments Of Commercial Paper
ProceedsFromRepaymentsOfCommercialPaper
|
349000000 | USD |
CY2019 | us-gaap |
Proceeds From Issuance Of Long Term Debt
ProceedsFromIssuanceOfLongTermDebt
|
2916000000 | USD |
CY2018 | us-gaap |
Proceeds From Issuance Of Long Term Debt
ProceedsFromIssuanceOfLongTermDebt
|
2495000000 | USD |
CY2017 | us-gaap |
Proceeds From Issuance Of Long Term Debt
ProceedsFromIssuanceOfLongTermDebt
|
1096000000 | USD |
CY2019 | us-gaap |
Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
|
1302000000 | USD |
CY2018 | us-gaap |
Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
|
484000000 | USD |
CY2017 | us-gaap |
Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
|
1211000000 | USD |
CY2019 | us-gaap |
Payments Of Debt Extinguishment Costs
PaymentsOfDebtExtinguishmentCosts
|
0 | USD |
CY2018 | us-gaap |
Payments Of Debt Extinguishment Costs
PaymentsOfDebtExtinguishmentCosts
|
0 | USD |
CY2017 | us-gaap |
Payments Of Debt Extinguishment Costs
PaymentsOfDebtExtinguishmentCosts
|
5000000 | USD |
CY2019 | us-gaap |
Payment Of Financing And Stock Issuance Costs
PaymentOfFinancingAndStockIssuanceCosts
|
20000000 | USD |
CY2018 | us-gaap |
Payment Of Financing And Stock Issuance Costs
PaymentOfFinancingAndStockIssuanceCosts
|
47000000 | USD |
CY2017 | us-gaap |
Payment Of Financing And Stock Issuance Costs
PaymentOfFinancingAndStockIssuanceCosts
|
13000000 | USD |
CY2019 | us-gaap |
Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
|
577000000 | USD |
CY2018 | us-gaap |
Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
|
499000000 | USD |
CY2017 | us-gaap |
Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
|
461000000 | USD |
CY2019 | us-gaap |
Payments Of Dividends Preferred Stock And Preference Stock
PaymentsOfDividendsPreferredStockAndPreferenceStock
|
118000000 | USD |
CY2018 | us-gaap |
Payments Of Dividends Preferred Stock And Preference Stock
PaymentsOfDividendsPreferredStockAndPreferenceStock
|
11000000 | USD |
CY2017 | us-gaap |
Payments Of Dividends Preferred Stock And Preference Stock
PaymentsOfDividendsPreferredStockAndPreferenceStock
|
0 | USD |
CY2019 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
0 | USD |
CY2018 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
1844000000 | USD |
CY2017 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
0 | USD |
CY2019 | us-gaap |
Proceeds From Issuance Of Preferred Stock And Preference Stock
ProceedsFromIssuanceOfPreferredStockAndPreferenceStock
|
0 | USD |
CY2018 | us-gaap |
Proceeds From Issuance Of Preferred Stock And Preference Stock
ProceedsFromIssuanceOfPreferredStockAndPreferenceStock
|
1740000000 | USD |
CY2017 | us-gaap |
Proceeds From Issuance Of Preferred Stock And Preference Stock
ProceedsFromIssuanceOfPreferredStockAndPreferenceStock
|
0 | USD |
CY2019 | cnp |
Distribution To Zens Holders
DistributionToZENSHolders
|
0 | USD |
CY2018 | cnp |
Distribution To Zens Holders
DistributionToZENSHolders
|
398000000 | USD |
CY2017 | cnp |
Distribution To Zens Holders
DistributionToZENSHolders
|
0 | USD |
CY2019 | us-gaap |
Proceeds From Payments For Other Financing Activities
ProceedsFromPaymentsForOtherFinancingActivities
|
-14000000 | USD |
CY2018 | us-gaap |
Proceeds From Payments For Other Financing Activities
ProceedsFromPaymentsForOtherFinancingActivities
|
-5000000 | USD |
CY2017 | us-gaap |
Proceeds From Payments For Other Financing Activities
ProceedsFromPaymentsForOtherFinancingActivities
|
-4000000 | USD |
CY2019 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
2776000000 | USD |
CY2018 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
3053000000 | USD |
CY2017 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
-245000000 | USD |
CY2019 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect
|
-4007000000 | USD |
CY2018 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect
|
3982000000 | USD |
CY2017 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect
|
-85000000 | USD |
CY2018Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
4278000000 | USD |
CY2017Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
296000000 | USD |
CY2016Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
381000000 | USD |
CY2019Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
271000000 | USD |
CY2018Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
4278000000 | USD |
CY2017Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
296000000 | USD |
CY2019Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
8359000000 | USD |
CY2018Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
8058000000 | USD |
CY2017Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
4688000000 | USD |
CY2019 | us-gaap |
Use Of Estimates
UseOfEstimates
|
<div style="line-height:120%;text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Use of Estimates</span></div><div style="line-height:120%;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;text-indent:24px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.</span></div><div style="line-height:120%;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div> | |
CY2019 | cnp |
Capitalized Fees Not Eliminatedin Consolidation
CapitalizedFeesNotEliminatedinConsolidation
|
162000000 | USD |
CY2019 | us-gaap |
Guarantees Indemnifications And Warranties Policies
GuaranteesIndemnificationsAndWarrantiesPolicies
|
Guarantees<div style="line-height:120%;text-align:left;text-indent:12px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;text-indent:24px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">CenterPoint Energy recognizes guarantee obligations at fair value. CenterPoint Energy discloses parent company guarantees of a subsidiary’s obligation when that guarantee results in the exposure of a material obligation of the parent company even if the probability of fulfilling such obligation is considered remote. See Note 16(c) and (d). </span></div> | |
CY2019 | us-gaap |
Provision For Doubtful Accounts
ProvisionForDoubtfulAccounts
|
16000000 | USD |
CY2018 | us-gaap |
Provision For Doubtful Accounts
ProvisionForDoubtfulAccounts
|
16000000 | USD |
CY2017 | us-gaap |
Provision For Doubtful Accounts
ProvisionForDoubtfulAccounts
|
14000000 | USD |
CY2019Q4 | us-gaap |
Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
|
30685000000 | USD |
CY2019Q4 | us-gaap |
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
|
9740000000 | USD |
CY2019Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
20945000000 | USD |
CY2018Q4 | us-gaap |
Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
|
20267000000 | USD |
CY2018Q4 | us-gaap |
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
|
6223000000 | USD |
CY2018Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
14044000000 | USD |
CY2019 | us-gaap |
Depreciation
Depreciation
|
920000000 | USD |
CY2018 | us-gaap |
Depreciation
Depreciation
|
626000000 | USD |
CY2017 | us-gaap |
Depreciation
Depreciation
|
619000000 | USD |
CY2019 | us-gaap |
Amortization Of Regulatory Asset
AmortizationOfRegulatoryAsset
|
271000000 | USD |
CY2018 | us-gaap |
Amortization Of Regulatory Asset
AmortizationOfRegulatoryAsset
|
531000000 | USD |
CY2017 | us-gaap |
Amortization Of Regulatory Asset
AmortizationOfRegulatoryAsset
|
329000000 | USD |
CY2019 | us-gaap |
Adjustment For Amortization
AdjustmentForAmortization
|
96000000 | USD |
CY2018 | us-gaap |
Adjustment For Amortization
AdjustmentForAmortization
|
86000000 | USD |
CY2017 | us-gaap |
Adjustment For Amortization
AdjustmentForAmortization
|
88000000 | USD |
CY2019 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
1287000000 | USD |
CY2018 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
1243000000 | USD |
CY2017 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
1036000000 | USD |
CY2018Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
258000000 | USD |
CY2017Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
281000000 | USD |
CY2019 | cnp |
Asset Retirement Obligation Additionfrom Mergerwith Vectren
AssetRetirementObligationAdditionfromMergerwithVectren
|
116000000 | USD |
CY2019 | us-gaap |
Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
|
16000000 | USD |
CY2018 | us-gaap |
Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
|
10000000 | USD |
CY2019 | us-gaap |
Asset Retirement Obligation Revision Of Estimate
AssetRetirementObligationRevisionOfEstimate
|
149000000 | USD |
CY2018 | us-gaap |
Asset Retirement Obligation Revision Of Estimate
AssetRetirementObligationRevisionOfEstimate
|
-33000000 | USD |
CY2019Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
539000000 | USD |
CY2018Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
258000000 | USD |
CY2019 | us-gaap |
Revenue From Contract With Customer Excluding Assessed Tax
RevenueFromContractWithCustomerExcludingAssessedTax
|
9151000000 | USD |
CY2019 | cnp |
Derivative Income Loss
DerivativeIncomeLoss
|
3311000000 | USD |
CY2019 | cnp |
Other Revenue Excluding Assessed Tax
OtherRevenueExcludingAssessedTax
|
12000000 | USD |
CY2019 | us-gaap |
Revenues
Revenues
|
12301000000 | USD |
CY2018 | us-gaap |
Revenue From Contract With Customer Excluding Assessed Tax
RevenueFromContractWithCustomerExcludingAssessedTax
|
6745000000 | USD |
CY2018 | cnp |
Derivative Income Loss
DerivativeIncomeLoss
|
4024000000 | USD |
CY2018 | cnp |
Other Revenue Excluding Assessed Tax
OtherRevenueExcludingAssessedTax
|
-34000000 | USD |
CY2018 | us-gaap |
Revenues
Revenues
|
10589000000 | USD |
CY2017 | us-gaap |
Revenue From Contract With Customer Excluding Assessed Tax
RevenueFromContractWithCustomerExcludingAssessedTax
|
6124000000 | USD |
CY2017 | cnp |
Derivative Income Loss
DerivativeIncomeLoss
|
3568000000 | USD |
CY2017 | cnp |
Other Revenue Excluding Assessed Tax
OtherRevenueExcludingAssessedTax
|
7000000 | USD |
CY2017 | us-gaap |
Revenues
Revenues
|
9614000000 | USD |
CY2018Q4 | us-gaap |
Derivative Asset Fair Value Gross Liability
DerivativeAssetFairValueGrossLiability
|
82000000 | USD |
CY2018Q4 | cnp |
Accounts Receivablefor Contractswith Customers
AccountsReceivableforContractswithCustomers
|
516000000 | USD |
CY2018Q4 | us-gaap |
Unbilled Contracts Receivable
UnbilledContractsReceivable
|
373000000 | USD |
CY2018Q4 | us-gaap |
Contract With Customer Asset Net Current
ContractWithCustomerAssetNetCurrent
|
0 | USD |
CY2018Q4 | us-gaap |
Contract With Customer Liability
ContractWithCustomerLiability
|
3000000 | USD |
CY2019Q4 | cnp |
Accounts Receivablefor Contractswith Customers
AccountsReceivableforContractswithCustomers
|
800000000 | USD |
CY2019Q4 | us-gaap |
Unbilled Contracts Receivable
UnbilledContractsReceivable
|
579000000 | USD |
CY2019Q4 | us-gaap |
Contract With Customer Asset Net Current
ContractWithCustomerAssetNetCurrent
|
61000000 | USD |
CY2019Q4 | us-gaap |
Contract With Customer Liability
ContractWithCustomerLiability
|
34000000 | USD |
CY2019 | cnp |
Increase Decreasein Accounts Receivableon Contractswith Customers
IncreaseDecreaseinAccountsReceivableonContractswithCustomers
|
284000000 | USD |
CY2019 | us-gaap |
Increase Decrease In Unbilled Receivables
IncreaseDecreaseInUnbilledReceivables
|
206000000 | USD |
CY2019 | us-gaap |
Increase Decrease In Contract With Customer Asset
IncreaseDecreaseInContractWithCustomerAsset
|
61000000 | USD |
CY2019 | us-gaap |
Increase Decrease In Contract With Customer Liability
IncreaseDecreaseInContractWithCustomerLiability
|
31000000 | USD |
CY2019 | us-gaap |
Contract With Customer Liability Revenue Recognized
ContractWithCustomerLiabilityRevenueRecognized
|
47000000 | USD |
CY2019Q4 | us-gaap |
Revenue Remaining Performance Obligation
RevenueRemainingPerformanceObligation
|
338000000 | USD |
CY2019Q4 | us-gaap |
Revenue Remaining Performance Obligation
RevenueRemainingPerformanceObligation
|
752000000 | USD |
CY2019Q4 | us-gaap |
Revenue Remaining Performance Obligation
RevenueRemainingPerformanceObligation
|
1090000000 | USD |
CY2019 | us-gaap |
Goodwill Acquired During Period
GoodwillAcquiredDuringPeriod
|
0 | USD |
CY2018Q4 | us-gaap |
Goodwill
Goodwill
|
867000000 | USD |
CY2019 | us-gaap |
Goodwill Impairment Loss
GoodwillImpairmentLoss
|
48000000 | USD |
CY2019Q4 | us-gaap |
Goodwill
Goodwill
|
5164000000 | USD |
CY2019Q4 | us-gaap |
Finite Lived Intangible Assets Gross
FiniteLivedIntangibleAssetsGross
|
411000000 | USD |
CY2019Q4 | us-gaap |
Finite Lived Intangible Assets Accumulated Amortization
FiniteLivedIntangibleAssetsAccumulatedAmortization
|
90000000 | USD |
CY2019Q4 | us-gaap |
Finite Lived Intangible Assets Net
FiniteLivedIntangibleAssetsNet
|
321000000 | USD |
CY2018Q4 | us-gaap |
Finite Lived Intangible Assets Gross
FiniteLivedIntangibleAssetsGross
|
106000000 | USD |
CY2018Q4 | us-gaap |
Finite Lived Intangible Assets Accumulated Amortization
FiniteLivedIntangibleAssetsAccumulatedAmortization
|
41000000 | USD |
CY2018Q4 | us-gaap |
Finite Lived Intangible Assets Net
FiniteLivedIntangibleAssetsNet
|
65000000 | USD |
CY2019Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Next Twelve Months
FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
|
29000000 | USD |
CY2019Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Year Two
FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
|
25000000 | USD |
CY2019Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Year Three
FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
|
25000000 | USD |
CY2019Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Year Four
FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
|
24000000 | USD |
CY2019Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Year Five
FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
|
22000000 | USD |
CY2019Q4 | us-gaap |
Securitized Regulatory Transition Assets Noncurrent
SecuritizedRegulatoryTransitionAssetsNoncurrent
|
788000000 | USD |
CY2019Q4 | cnp |
Unrecognized Equity Return
UnrecognizedEquityReturn
|
168000000 | USD |
CY2019Q4 | us-gaap |
Unamortized Loss Reacquired Debt Noncurrent
UnamortizedLossReacquiredDebtNoncurrent
|
62000000 | USD |
CY2019Q4 | us-gaap |
Regulatory Assets Noncurrent
RegulatoryAssetsNoncurrent
|
2117000000 | USD |
CY2019Q4 | us-gaap |
Regulatory Assets
RegulatoryAssets
|
2129000000 | USD |
CY2019Q4 | us-gaap |
Regulatory Liability Noncurrent
RegulatoryLiabilityNoncurrent
|
3474000000 | USD |
CY2019Q4 | us-gaap |
Regulatory Liabilities
RegulatoryLiabilities
|
3521000000 | USD |
CY2019Q4 | us-gaap |
Net Regulatory Assets
NetRegulatoryAssets
|
-1392000000 | USD |
CY2018Q4 | us-gaap |
Securitized Regulatory Transition Assets Noncurrent
SecuritizedRegulatoryTransitionAssetsNoncurrent
|
1059000000 | USD |
CY2018Q4 | cnp |
Unrecognized Equity Return
UnrecognizedEquityReturn
|
213000000 | USD |
CY2018Q4 | us-gaap |
Unamortized Loss Reacquired Debt Noncurrent
UnamortizedLossReacquiredDebtNoncurrent
|
68000000 | USD |
CY2018Q4 | us-gaap |
Regulatory Assets Noncurrent
RegulatoryAssetsNoncurrent
|
1967000000 | USD |
CY2018Q4 | us-gaap |
Regulatory Assets
RegulatoryAssets
|
2044000000 | USD |
CY2018Q4 | us-gaap |
Regulatory Liability Noncurrent
RegulatoryLiabilityNoncurrent
|
2525000000 | USD |
CY2018Q4 | us-gaap |
Regulatory Liabilities
RegulatoryLiabilities
|
2563000000 | USD |
CY2018Q4 | us-gaap |
Net Regulatory Assets
NetRegulatoryAssets
|
-519000000 | USD |
CY2019 | cnp |
Amount Of Allowed Equity Return Recognized In Period
AmountOfAllowedEquityReturnRecognizedInPeriod
|
45000000 | USD |
CY2018 | cnp |
Amount Of Allowed Equity Return Recognized In Period
AmountOfAllowedEquityReturnRecognizedInPeriod
|
74000000 | USD |
CY2017 | cnp |
Amount Of Allowed Equity Return Recognized In Period
AmountOfAllowedEquityReturnRecognizedInPeriod
|
42000000 | USD |
CY2018Q4 | us-gaap |
Assets Fair Value Disclosure
AssetsFairValueDisclosure
|
747000000 | USD |
CY2019Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized
ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
|
14000000 | shares |
CY2019 | us-gaap |
Employee Service Share Based Compensation Tax Benefit From Compensation Expense
EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
|
7000000 | USD |
CY2018 | us-gaap |
Employee Service Share Based Compensation Tax Benefit From Compensation Expense
EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
|
6000000 | USD |
CY2017 | us-gaap |
Employee Service Share Based Compensation Tax Benefit From Compensation Expense
EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
|
8000000 | USD |
CY2019 | us-gaap |
Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options
EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions
|
12000000 | USD |
CY2018 | us-gaap |
Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options
EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions
|
5000000 | USD |
CY2017 | us-gaap |
Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options
EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions
|
6000000 | USD |
CY2019 | cnp |
Maximum Number Of Times Annual Salary Included In Severance Benefits
MaximumNumberOfTimesAnnualSalaryIncludedInSeveranceBenefits
|
3 | salary_severance_benefits |
CY2019 | us-gaap |
Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
|
58000000 | USD |
CY2018 | us-gaap |
Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
|
43000000 | USD |
CY2017 | us-gaap |
Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
|
41000000 | USD |
CY2019 | us-gaap |
Postemployment Benefits Period Expense
PostemploymentBenefitsPeriodExpense
|
2000000 | USD |
CY2018 | us-gaap |
Postemployment Benefits Period Expense
PostemploymentBenefitsPeriodExpense
|
3000000 | USD |
CY2017 | us-gaap |
Postemployment Benefits Period Expense
PostemploymentBenefitsPeriodExpense
|
6000000 | USD |
CY2019 | us-gaap |
Deferred Compensation Arrangement With Individual Compensation Expense
DeferredCompensationArrangementWithIndividualCompensationExpense
|
4000000 | USD |
CY2018 | us-gaap |
Deferred Compensation Arrangement With Individual Compensation Expense
DeferredCompensationArrangementWithIndividualCompensationExpense
|
3000000 | USD |
CY2017 | us-gaap |
Deferred Compensation Arrangement With Individual Compensation Expense
DeferredCompensationArrangementWithIndividualCompensationExpense
|
3000000 | USD |
CY2019Q4 | us-gaap |
Deferred Finance Costs Noncurrent Net
DeferredFinanceCostsNoncurrentNet
|
22000000 | USD |
CY2019 | cnp |
Weather Hedges Term
WeatherHedgesTerm
|
P10Y | |
CY2019Q4 | us-gaap |
Derivative Fair Value Of Derivative Asset
DerivativeFairValueOfDerivativeAsset
|
292000000 | USD |
CY2019Q4 | us-gaap |
Derivative Fair Value Of Derivative Liability
DerivativeFairValueOfDerivativeLiability
|
1144000000 | USD |
CY2018Q4 | us-gaap |
Derivative Fair Value Of Derivative Asset
DerivativeFairValueOfDerivativeAsset
|
220000000 | USD |
CY2018Q4 | us-gaap |
Derivative Fair Value Of Derivative Liability
DerivativeFairValueOfDerivativeLiability
|
833000000 | USD |
CY2019Q4 | us-gaap |
Derivative Assets
DerivativeAssets
|
47000000 | USD |
CY2019Q4 | us-gaap |
Deferred Gain Loss On Discontinuation Of Fair Value Hedge
DeferredGainLossOnDiscontinuationOfFairValueHedge
|
-13000000 | USD |
CY2018Q4 | us-gaap |
Derivative Assets
DerivativeAssets
|
57000000 | USD |
CY2018Q4 | us-gaap |
Deferred Gain Loss On Discontinuation Of Fair Value Hedge
DeferredGainLossOnDiscontinuationOfFairValueHedge
|
1000000 | USD |
CY2019 | us-gaap |
Cost Of Goods And Services Sold
CostOfGoodsAndServicesSold
|
4029000000 | USD |
CY2018 | us-gaap |
Cost Of Goods And Services Sold
CostOfGoodsAndServicesSold
|
4364000000 | USD |
CY2017 | us-gaap |
Cost Of Goods And Services Sold
CostOfGoodsAndServicesSold
|
3785000000 | USD |
CY2019 | us-gaap |
Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net
DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
|
-78000000 | USD |
CY2018 | us-gaap |
Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net
DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
|
-123000000 | USD |
CY2017 | us-gaap |
Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net
DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
|
260000000 | USD |
CY2019Q4 | us-gaap |
Derivative Net Liability Position Aggregate Fair Value
DerivativeNetLiabilityPositionAggregateFairValue
|
1000000 | USD |
CY2018Q4 | us-gaap |
Derivative Net Liability Position Aggregate Fair Value
DerivativeNetLiabilityPositionAggregateFairValue
|
1000000 | USD |
CY2019Q4 | us-gaap |
Collateral Already Posted Aggregate Fair Value
CollateralAlreadyPostedAggregateFairValue
|
0 | USD |
CY2018Q4 | us-gaap |
Collateral Already Posted Aggregate Fair Value
CollateralAlreadyPostedAggregateFairValue
|
0 | USD |
CY2019Q4 | us-gaap |
Additional Collateral Aggregate Fair Value
AdditionalCollateralAggregateFairValue
|
1000000 | USD |
CY2018Q4 | us-gaap |
Additional Collateral Aggregate Fair Value
AdditionalCollateralAggregateFairValue
|
0 | USD |
CY2019Q4 | us-gaap |
Credit Risk Derivative Assets At Fair Value
CreditRiskDerivativeAssetsAtFairValue
|
194000000 | USD |
CY2018Q4 | us-gaap |
Credit Risk Derivative Assets At Fair Value
CreditRiskDerivativeAssetsAtFairValue
|
138000000 | USD |
CY2019Q4 | us-gaap |
Derivative Asset Fair Value Gross Liability
DerivativeAssetFairValueGrossLiability
|
98000000 | USD |
CY2019Q4 | us-gaap |
Assets Fair Value Disclosure
AssetsFairValueDisclosure
|
1068000000 | USD |
CY2019Q4 | us-gaap |
Derivative Liability Fair Value Gross Asset
DerivativeLiabilityFairValueGrossAsset
|
161000000 | USD |
CY2018Q4 | us-gaap |
Deferred Finance Costs Noncurrent Net
DeferredFinanceCostsNoncurrentNet
|
13000000 | USD |
CY2019Q4 | us-gaap |
Debt Instrument Unamortized Discount Premium Net
DebtInstrumentUnamortizedDiscountPremiumNet
|
7000000 | USD |
CY2018Q4 | us-gaap |
Debt Instrument Unamortized Discount Premium Net
DebtInstrumentUnamortizedDiscountPremiumNet
|
2000000 | USD |
CY2019Q4 | us-gaap |
Financial Liabilities Fair Value Disclosure
FinancialLiabilitiesFairValueDisclosure
|
996000000 | USD |
CY2018Q4 | us-gaap |
Derivative Liability Fair Value Gross Asset
DerivativeLiabilityFairValueGrossAsset
|
101000000 | USD |
CY2018Q4 | us-gaap |
Financial Liabilities Fair Value Disclosure
FinancialLiabilitiesFairValueDisclosure
|
732000000 | USD |
CY2018Q4 | us-gaap |
Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs
FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs
|
30000000 | USD |
CY2017Q4 | us-gaap |
Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs
FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs
|
-622000000 | USD |
CY2016Q4 | us-gaap |
Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs
FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs
|
-704000000 | USD |
CY2019 | us-gaap |
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Earnings
FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings
|
17000000 | USD |
CY2018 | us-gaap |
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Earnings
FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings
|
30000000 | USD |
CY2017 | us-gaap |
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Earnings
FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings
|
96000000 | USD |
CY2019 | us-gaap |
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Settlements
FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements
|
22000000 | USD |
CY2018 | us-gaap |
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Settlements
FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements
|
39000000 | USD |
CY2017 | us-gaap |
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Settlements
FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements
|
11000000 | USD |
CY2019 | us-gaap |
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Transfers Into Level3
FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersIntoLevel3
|
-1000000 | USD |
CY2018 | us-gaap |
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Transfers Into Level3
FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersIntoLevel3
|
5000000 | USD |
CY2017 | us-gaap |
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Transfers Into Level3
FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersIntoLevel3
|
14000000 | USD |
CY2019 | us-gaap |
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Transfers Out Of Level3
FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersOutOfLevel3
|
6000000 | USD |
CY2018 | us-gaap |
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Transfers Out Of Level3
FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersOutOfLevel3
|
-656000000 | USD |
CY2017 | us-gaap |
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Transfers Out Of Level3
FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersOutOfLevel3
|
17000000 | USD |
CY2019Q4 | us-gaap |
Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs
FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs
|
18000000 | USD |
CY2018Q4 | us-gaap |
Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs
FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs
|
30000000 | USD |
CY2017Q4 | us-gaap |
Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs
FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs
|
-622000000 | USD |
CY2019 | us-gaap |
Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss
FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss
|
12000000 | USD |
CY2018 | us-gaap |
Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss
FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss
|
18000000 | USD |
CY2017 | us-gaap |
Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss
FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss
|
87000000 | USD |
CY2019Q4 | us-gaap |
Equity Method Investments
EquityMethodInvestments
|
2408000000 | USD |
CY2018Q4 | us-gaap |
Equity Method Investments
EquityMethodInvestments
|
2482000000 | USD |
CY2019 | us-gaap |
Income Loss From Equity Method Investments
IncomeLossFromEquityMethodInvestments
|
230000000 | USD |
CY2018 | us-gaap |
Income Loss From Equity Method Investments
IncomeLossFromEquityMethodInvestments
|
307000000 | USD |
CY2017 | us-gaap |
Income Loss From Equity Method Investments
IncomeLossFromEquityMethodInvestments
|
265000000 | USD |
CY2019Q4 | us-gaap |
Cost Method Investments
CostMethodInvestments
|
363000000 | USD |
CY2019 | cnp |
Saleof Units Percentage Trigger Rightof First Refusal
SaleofUnitsPercentageTriggerRightofFirstRefusal
|
0.05 | |
CY2019 | cnp |
Totaldistributionsreceivedfrom Enable
TotaldistributionsreceivedfromEnable
|
339000000 | USD |
CY2018 | cnp |
Totaldistributionsreceivedfrom Enable
TotaldistributionsreceivedfromEnable
|
333000000 | USD |
CY2017 | cnp |
Totaldistributionsreceivedfrom Enable
TotaldistributionsreceivedfromEnable
|
333000000 | USD |
CY2019 | us-gaap |
Preferred Stock Dividends Income Statement Impact
PreferredStockDividendsIncomeStatementImpact
|
117000000 | USD |
CY2018 | us-gaap |
Preferred Stock Dividends Income Statement Impact
PreferredStockDividendsIncomeStatementImpact
|
35000000 | USD |
CY2017 | us-gaap |
Preferred Stock Dividends Income Statement Impact
PreferredStockDividendsIncomeStatementImpact
|
0 | USD |
CY2018Q3 | us-gaap |
Proceeds From Issuance Of Preferred Stock And Preference Stock
ProceedsFromIssuanceOfPreferredStockAndPreferenceStock
|
790000000 | USD |
CY2018Q4 | us-gaap |
Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax
AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax
|
108000000 | USD |
CY2017Q4 | us-gaap |
Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax
AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax
|
68000000 | USD |
CY2019 | us-gaap |
Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax
OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax
|
-1000000 | USD |
CY2019 | cnp |
Othercomprehensivelossfromunconsolidatedaffiliatesnetoftax
Othercomprehensivelossfromunconsolidatedaffiliatesnetoftax
|
1000000 | USD |
CY2019 | us-gaap |
Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax
OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax
|
1000000 | USD |
CY2018 | us-gaap |
Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax
OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax
|
1000000 | USD |
CY2019 | us-gaap |
Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax
OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax
|
-8000000 | USD |
CY2018 | us-gaap |
Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax
OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax
|
-6000000 | USD |
CY2019 | us-gaap |
Other Comprehensive Income Loss Tax Portion Attributable To Parent1
OtherComprehensiveIncomeLossTaxPortionAttributableToParent1
|
3000000 | USD |
CY2018 | us-gaap |
Other Comprehensive Income Loss Tax Portion Attributable To Parent1
OtherComprehensiveIncomeLossTaxPortionAttributableToParent1
|
-6000000 | USD |
CY2019 | us-gaap |
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
|
10000000 | USD |
CY2018 | us-gaap |
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
|
-25000000 | USD |
CY2019Q4 | us-gaap |
Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax
AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax
|
98000000 | USD |
CY2018Q4 | us-gaap |
Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax
AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax
|
108000000 | USD |
CY2019Q4 | us-gaap |
Long Term Debt
LongTermDebt
|
14244000000 | USD |
CY2019Q4 | us-gaap |
Debt Current
DebtCurrent
|
868000000 | USD |
CY2018Q4 | us-gaap |
Long Term Debt
LongTermDebt
|
8682000000 | USD |
CY2018Q4 | us-gaap |
Debt Current
DebtCurrent
|
482000000 | USD |
CY2019 | us-gaap |
Interest Expense Related Party
InterestExpenseRelatedParty
|
5000000 | USD |
CY2019 | cnp |
Commercialpaperissuedinconnectionwiththe Merger
CommercialpaperissuedinconnectionwiththeMerger
|
764000000 | USD |
CY2019Q4 | us-gaap |
Line Of Credit Facility Maximum Borrowing Capacity
LineOfCreditFacilityMaximumBorrowingCapacity
|
5100000000 | USD |
CY2019 | cnp |
Numberofdaysuntilcommercialpapermaturity
Numberofdaysuntilcommercialpapermaturity
|
60 | day |
CY2019 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
48000000 | USD |
CY2018 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
89000000 | USD |
CY2017 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
32000000 | USD |
CY2019 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
21000000 | USD |
CY2018 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
9000000 | USD |
CY2017 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
9000000 | USD |
CY2019 | us-gaap |
Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
|
69000000 | USD |
CY2018 | us-gaap |
Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
|
98000000 | USD |
CY2017 | us-gaap |
Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
|
41000000 | USD |
CY2019 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
74000000 | USD |
CY2018 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
-25000000 | USD |
CY2017 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
-806000000 | USD |
CY2019 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
-5000000 | USD |
CY2018 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
73000000 | USD |
CY2017 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
36000000 | USD |
CY2019 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
69000000 | USD |
CY2018 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
48000000 | USD |
CY2017 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
-770000000 | USD |
CY2019 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
138000000 | USD |
CY2018 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
146000000 | USD |
CY2017 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
-729000000 | USD |
CY2019 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
|
929000000 | USD |
CY2018 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
|
514000000 | USD |
CY2017 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
|
1063000000 | USD |
CY2019 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.21 | |
CY2018 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.21 | |
CY2017 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.35 | |
CY2019 | us-gaap |
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
|
195000000 | USD |
CY2018 | us-gaap |
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
|
108000000 | USD |
CY2017 | us-gaap |
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
|
372000000 | USD |
CY2019 | us-gaap |
Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
|
36000000 | USD |
CY2018 | us-gaap |
Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
|
22000000 | USD |
CY2017 | us-gaap |
Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
|
26000000 | USD |
CY2019 | us-gaap |
Income Tax Reconciliation Other Adjustments
IncomeTaxReconciliationOtherAdjustments
|
-4000000 | USD |
CY2018 | us-gaap |
Income Tax Reconciliation Other Adjustments
IncomeTaxReconciliationOtherAdjustments
|
11000000 | USD |
CY2017 | us-gaap |
Income Tax Reconciliation Other Adjustments
IncomeTaxReconciliationOtherAdjustments
|
3000000 | USD |
CY2019 | us-gaap |
Income Tax Reconciliation Change In Enacted Tax Rate
IncomeTaxReconciliationChangeInEnactedTaxRate
|
-21000000 | USD |
CY2018 | us-gaap |
Income Tax Reconciliation Change In Enacted Tax Rate
IncomeTaxReconciliationChangeInEnactedTaxRate
|
32000000 | USD |
CY2017 | us-gaap |
Income Tax Reconciliation Change In Enacted Tax Rate
IncomeTaxReconciliationChangeInEnactedTaxRate
|
0 | USD |
CY2019 | cnp |
Tax Benefit From Remeasurementof Deferred Taxes Dueto Tax Reform
TaxBenefitFromRemeasurementofDeferredTaxesDuetoTaxReform
|
0 | USD |
CY2018 | cnp |
Tax Benefit From Remeasurementof Deferred Taxes Dueto Tax Reform
TaxBenefitFromRemeasurementofDeferredTaxesDuetoTaxReform
|
0 | USD |
CY2017 | cnp |
Tax Benefit From Remeasurementof Deferred Taxes Dueto Tax Reform
TaxBenefitFromRemeasurementofDeferredTaxesDuetoTaxReform
|
1113000000 | USD |
CY2019 | us-gaap |
Income Tax Reconciliation Nondeductible Expense Amortization
IncomeTaxReconciliationNondeductibleExpenseAmortization
|
55000000 | USD |
CY2018 | us-gaap |
Income Tax Reconciliation Nondeductible Expense Amortization
IncomeTaxReconciliationNondeductibleExpenseAmortization
|
24000000 | USD |
CY2017 | us-gaap |
Income Tax Reconciliation Nondeductible Expense Amortization
IncomeTaxReconciliationNondeductibleExpenseAmortization
|
0 | USD |
CY2019 | us-gaap |
Income Tax Reconciliation Other Reconciling Items
IncomeTaxReconciliationOtherReconcilingItems
|
-13000000 | USD |
CY2018 | us-gaap |
Income Tax Reconciliation Other Reconciling Items
IncomeTaxReconciliationOtherReconcilingItems
|
-3000000 | USD |
CY2017 | us-gaap |
Income Tax Reconciliation Other Reconciling Items
IncomeTaxReconciliationOtherReconcilingItems
|
-17000000 | USD |
CY2019 | cnp |
Income Tax Reconciliation Change In Tax Expense
IncomeTaxReconciliationChangeInTaxExpense
|
-57000000 | USD |
CY2018 | cnp |
Income Tax Reconciliation Change In Tax Expense
IncomeTaxReconciliationChangeInTaxExpense
|
38000000 | USD |
CY2017 | cnp |
Income Tax Reconciliation Change In Tax Expense
IncomeTaxReconciliationChangeInTaxExpense
|
-1101000000 | USD |
CY2019 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
138000000 | USD |
CY2018 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
146000000 | USD |
CY2017 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
-729000000 | USD |
CY2019 | us-gaap |
Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
|
0.15 | |
CY2018 | us-gaap |
Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
|
0.28 | |
CY2017 | us-gaap |
Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
|
-0.69 | |
CY2019 | us-gaap |
Income Tax Reconciliation Nondeductible Expense Amortization
IncomeTaxReconciliationNondeductibleExpenseAmortization
|
55000000 | USD |
CY2019 | us-gaap |
Income Tax Reconciliation Other Adjustments
IncomeTaxReconciliationOtherAdjustments
|
-4000000 | USD |
CY2018 | us-gaap |
Income Tax Reconciliation Change In Enacted Tax Rate
IncomeTaxReconciliationChangeInEnactedTaxRate
|
32000000 | USD |
CY2018 | us-gaap |
Income Tax Reconciliation Other Adjustments
IncomeTaxReconciliationOtherAdjustments
|
11000000 | USD |
CY2018 | us-gaap |
Income Tax Reconciliation Nondeductible Expense Amortization
IncomeTaxReconciliationNondeductibleExpenseAmortization
|
24000000 | USD |
CY2017 | cnp |
Tax Benefit From Remeasurementof Deferred Taxes Dueto Tax Reform
TaxBenefitFromRemeasurementofDeferredTaxesDuetoTaxReform
|
1100000000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Compensation And Benefits
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits
|
152000000 | USD |
CY2018Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Compensation And Benefits
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits
|
160000000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Assets Regulatory Assets And Liabilities
DeferredTaxAssetsRegulatoryAssetsAndLiabilities
|
447000000 | USD |
CY2018Q4 | us-gaap |
Deferred Tax Assets Regulatory Assets And Liabilities
DeferredTaxAssetsRegulatoryAssetsAndLiabilities
|
356000000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Assets Other Tax Carryforwards
DeferredTaxAssetsOtherTaxCarryforwards
|
111000000 | USD |
CY2018Q4 | us-gaap |
Deferred Tax Assets Other Tax Carryforwards
DeferredTaxAssetsOtherTaxCarryforwards
|
84000000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations
|
89000000 | USD |
CY2018Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations
|
62000000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Assets Derivative Instruments
DeferredTaxAssetsDerivativeInstruments
|
34000000 | USD |
CY2018Q4 | us-gaap |
Deferred Tax Assets Derivative Instruments
DeferredTaxAssetsDerivativeInstruments
|
0 | USD |
CY2019Q4 | cnp |
Deferred Tax Assets Noncurrent Other
DeferredTaxAssetsNoncurrentOther
|
40000000 | USD |
CY2018Q4 | cnp |
Deferred Tax Assets Noncurrent Other
DeferredTaxAssetsNoncurrentOther
|
29000000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
|
25000000 | USD |
CY2018Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
|
18000000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Assets Net
DeferredTaxAssetsNet
|
848000000 | USD |
CY2018Q4 | us-gaap |
Deferred Tax Assets Net
DeferredTaxAssetsNet
|
673000000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
|
2656000000 | USD |
CY2018Q4 | us-gaap |
Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
|
1894000000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Liabilities Investment In Noncontrolled Affiliates
DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates
|
1010000000 | USD |
CY2018Q4 | us-gaap |
Deferred Tax Liabilities Investment In Noncontrolled Affiliates
DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates
|
987000000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Liabilities Regulatory Assets And Liabilities
DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities
|
344000000 | USD |
CY2018Q4 | us-gaap |
Deferred Tax Liabilities Regulatory Assets And Liabilities
DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities
|
395000000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Liabilities Investments
DeferredTaxLiabilitiesInvestments
|
586000000 | USD |
CY2018Q4 | us-gaap |
Deferred Tax Liabilities Investments
DeferredTaxLiabilitiesInvestments
|
478000000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Liabilities Derivatives
DeferredTaxLiabilitiesDerivatives
|
0 | USD |
CY2018Q4 | us-gaap |
Deferred Tax Liabilities Derivatives
DeferredTaxLiabilitiesDerivatives
|
27000000 | USD |
CY2019Q4 | cnp |
Deferred Tax Liabilities Noncurrent Other
DeferredTaxLiabilitiesNoncurrentOther
|
180000000 | USD |
CY2018Q4 | cnp |
Deferred Tax Liabilities Noncurrent Other
DeferredTaxLiabilitiesNoncurrentOther
|
131000000 | USD |
CY2019Q4 | us-gaap |
Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
|
4776000000 | USD |
CY2018Q4 | us-gaap |
Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
|
3912000000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Liabilities
DeferredTaxLiabilities
|
3928000000 | USD |
CY2018Q4 | us-gaap |
Deferred Tax Liabilities
DeferredTaxLiabilities
|
3239000000 | USD |
CY2019Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
|
25000000 | USD |
CY2018Q4 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
0 | USD |
CY2019 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Acquisition
UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition
|
9000000 | USD |
CY2019 | us-gaap |
Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
|
1000000 | USD |
CY2019Q4 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
8000000 | USD |
CY2019Q4 | us-gaap |
Purchase Obligation Due In Next Twelve Months
PurchaseObligationDueInNextTwelveMonths
|
750000000 | USD |
CY2019Q4 | us-gaap |
Purchase Obligation Due In Second Year
PurchaseObligationDueInSecondYear
|
617000000 | USD |
CY2019Q4 | us-gaap |
Purchase Obligation Due In Third Year
PurchaseObligationDueInThirdYear
|
418000000 | USD |
CY2019Q4 | us-gaap |
Purchase Obligation Due In Fourth Year
PurchaseObligationDueInFourthYear
|
335000000 | USD |
CY2019Q4 | us-gaap |
Purchase Obligation Due In Fifth Year
PurchaseObligationDueInFifthYear
|
271000000 | USD |
CY2019Q4 | us-gaap |
Purchase Obligation Due After Fifth Year
PurchaseObligationDueAfterFifthYear
|
1888000000 | USD |
CY2019Q4 | cnp |
Numberofsuretybondobligationsoutstanding
Numberofsuretybondobligationsoutstanding
|
62 | |
CY2019Q4 | cnp |
Performanceguaranteeobligationsoutstandingfaceamount
Performanceguaranteeobligationsoutstandingfaceamount
|
565000000 | USD |
CY2019 | cnp |
Percentageofworkyettobecompletedonprojectswithopensuretybonds
Percentageofworkyettobecompletedonprojectswithopensuretybonds
|
0.36 | |
CY2019Q4 | us-gaap |
Guarantee Obligations Maximum Exposure
GuaranteeObligationsMaximumExposure
|
499000000 | USD |
CY2019 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
674000000 | USD |
CY2018 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
333000000 | USD |
CY2019Q4 | us-gaap |
Operating Lease Liability
OperatingLeaseLiability
|
63000000 | USD |
CY2019Q4 | us-gaap |
Operating Lease Weighted Average Remaining Lease Term1
OperatingLeaseWeightedAverageRemainingLeaseTerm1
|
P5Y1M6D | |
CY2019Q4 | us-gaap |
Operating Lease Weighted Average Discount Rate Percent
OperatingLeaseWeightedAverageDiscountRatePercent
|
0.0342 | |
CY2017 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
1792000000 | USD |
CY2019 | us-gaap |
Net Income Loss Available To Common Stockholders Diluted
NetIncomeLossAvailableToCommonStockholdersDiluted
|
674000000 | USD |
CY2018 | us-gaap |
Net Income Loss Available To Common Stockholders Diluted
NetIncomeLossAvailableToCommonStockholdersDiluted
|
333000000 | USD |
CY2017 | us-gaap |
Net Income Loss Available To Common Stockholders Diluted
NetIncomeLossAvailableToCommonStockholdersDiluted
|
1792000000 | USD |
CY2019 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
502050000 | shares |
CY2018 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
448829000 | shares |
CY2017 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
430964000 | shares |
CY2019 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
505157000 | shares |
CY2018 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
452465000 | shares |
CY2017 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
434308000 | shares |
CY2019 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
1.34 | |
CY2018 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.74 | |
CY2017 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
4.16 | |
CY2019 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
1.33 | |
CY2018 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.74 | |
CY2017 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
4.13 | |
CY2017 | cnp |
Tax Benefit From Remeasurementof Deferred Taxes Dueto Tax Reform
TaxBenefitFromRemeasurementofDeferredTaxesDuetoTaxReform
|
1113000000 | USD |
CY2019Q1 | us-gaap |
Revenues
Revenues
|
3531000000 | USD |
CY2019Q2 | us-gaap |
Revenues
Revenues
|
2798000000 | USD |
CY2019Q3 | us-gaap |
Revenues
Revenues
|
2742000000 | USD |
CY2019Q4 | us-gaap |
Revenues
Revenues
|
3230000000 | USD |
CY2019Q1 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
245000000 | USD |
CY2019Q2 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
287000000 | USD |
CY2019Q3 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
392000000 | USD |
CY2019Q4 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
302000000 | USD |
CY2019Q1 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
140000000 | USD |
CY2019Q2 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
165000000 | USD |
CY2019Q3 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
241000000 | USD |
CY2019Q4 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
128000000 | USD |
CY2019Q1 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.28 | |
CY2019Q2 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.33 | |
CY2019Q3 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.48 | |
CY2019Q4 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.25 | |
CY2019Q1 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.28 | |
CY2019Q2 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.33 | |
CY2019Q3 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.47 | |
CY2019Q4 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.25 | |
CY2018Q1 | us-gaap |
Revenues
Revenues
|
3155000000 | USD |
CY2018Q2 | us-gaap |
Revenues
Revenues
|
2186000000 | USD |
CY2018Q3 | us-gaap |
Revenues
Revenues
|
2212000000 | USD |
CY2018Q4 | us-gaap |
Revenues
Revenues
|
3036000000 | USD |
CY2018Q1 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
251000000 | USD |
CY2018Q2 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
187000000 | USD |
CY2018Q3 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
226000000 | USD |
CY2018Q4 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
167000000 | USD |
CY2018Q1 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
165000000 | USD |
CY2018Q2 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
-75000000 | USD |
CY2018Q3 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
153000000 | USD |
CY2018Q4 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
90000000 | USD |
CY2018Q1 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.38 | |
CY2018Q2 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
-0.17 | |
CY2018Q3 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.35 | |
CY2018Q4 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.18 | |
CY2018Q1 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.38 | |
CY2018Q2 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
-0.17 | |
CY2018Q3 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.35 | |
CY2018Q4 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.18 | |
CY2019 | us-gaap |
Revenues
Revenues
|
12301000000 | USD |
CY2019 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
1287000000 | USD |
CY2019 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
1226000000 | USD |
CY2019Q4 | us-gaap |
Assets
Assets
|
35439000000 | USD |
CY2019 | cnp |
Capital Expendituresfor Long Lived Assets
CapitalExpendituresforLongLivedAssets
|
2587000000 | USD |
CY2019 | us-gaap |
Payments To Acquire Productive Assets
PaymentsToAcquireProductiveAssets
|
2506000000 | USD |
CY2018 | us-gaap |
Revenues
Revenues
|
10589000000 | USD |
CY2018 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
1243000000 | USD |
CY2018 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
831000000 | USD |
CY2018Q4 | us-gaap |
Assets
Assets
|
27009000000 | USD |
CY2018 | cnp |
Capital Expendituresfor Long Lived Assets
CapitalExpendituresforLongLivedAssets
|
1720000000 | USD |
CY2018 | us-gaap |
Payments To Acquire Productive Assets
PaymentsToAcquireProductiveAssets
|
1651000000 | USD |
CY2017 | us-gaap |
Revenues
Revenues
|
9614000000 | USD |
CY2017 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
1036000000 | USD |
CY2017 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
1136000000 | USD |
CY2017Q4 | us-gaap |
Assets
Assets
|
22736000000 | USD |
CY2017 | cnp |
Capital Expendituresfor Long Lived Assets
CapitalExpendituresforLongLivedAssets
|
1494000000 | USD |
CY2017 | us-gaap |
Payments To Acquire Productive Assets
PaymentsToAcquireProductiveAssets
|
1426000000 | USD |
CY2019 | us-gaap |
Revenues
Revenues
|
12301000000 | USD |
CY2018 | us-gaap |
Revenues
Revenues
|
10589000000 | USD |
CY2017 | us-gaap |
Revenues
Revenues
|
9614000000 | USD |
CY2019 | us-gaap |
Interest Paid Net
InterestPaidNet
|
436000000 | USD |
CY2018 | us-gaap |
Interest Paid Net
InterestPaidNet
|
363000000 | USD |
CY2017 | us-gaap |
Interest Paid Net
InterestPaidNet
|
378000000 | USD |
CY2019 | us-gaap |
Income Taxes Paid Net
IncomeTaxesPaidNet
|
155000000 | USD |
CY2018 | us-gaap |
Income Taxes Paid Net
IncomeTaxesPaidNet
|
89000000 | USD |
CY2017 | us-gaap |
Income Taxes Paid Net
IncomeTaxesPaidNet
|
15000000 | USD |
CY2019 | us-gaap |
Capital Expenditures Incurred But Not Yet Paid
CapitalExpendituresIncurredButNotYetPaid
|
236000000 | USD |
CY2018 | us-gaap |
Capital Expenditures Incurred But Not Yet Paid
CapitalExpendituresIncurredButNotYetPaid
|
201000000 | USD |
CY2017 | us-gaap |
Capital Expenditures Incurred But Not Yet Paid
CapitalExpendituresIncurredButNotYetPaid
|
144000000 | USD |
CY2019 | us-gaap |
Other Significant Noncash Transaction Value Of Consideration Given1
OtherSignificantNoncashTransactionValueOfConsiderationGiven1
|
0 | USD |
CY2018 | us-gaap |
Other Significant Noncash Transaction Value Of Consideration Given1
OtherSignificantNoncashTransactionValueOfConsiderationGiven1
|
0 | USD |
CY2017 | us-gaap |
Other Significant Noncash Transaction Value Of Consideration Given1
OtherSignificantNoncashTransactionValueOfConsiderationGiven1
|
0 | USD |
CY2019 | cnp |
Rou Asset Obtained In Exchangefor Operating Lease Liability Including Transition Impactof Asc842 Adoption
ROUAssetObtainedInExchangeforOperatingLeaseLiabilityIncludingTransitionImpactofASC842Adoption
|
44000000 | USD |
CY2018 | cnp |
Rou Asset Obtained In Exchangefor Operating Lease Liability Including Transition Impactof Asc842 Adoption
ROUAssetObtainedInExchangeforOperatingLeaseLiabilityIncludingTransitionImpactofASC842Adoption
|
0 | USD |
CY2017 | cnp |
Rou Asset Obtained In Exchangefor Operating Lease Liability Including Transition Impactof Asc842 Adoption
ROUAssetObtainedInExchangeforOperatingLeaseLiabilityIncludingTransitionImpactofASC842Adoption
|
0 | USD |
CY2019Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
241000000 | USD |
CY2018Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
4231000000 | USD |
CY2019Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
271000000 | USD |
CY2018Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
4278000000 | USD |
CY2019Q4 | us-gaap |
Lessor Operating Lease Payments To Be Received Two Years
LessorOperatingLeasePaymentsToBeReceivedTwoYears
|
2000000 | USD |
CY2019Q4 | us-gaap |
Lessor Operating Lease Payments To Be Received Three Years
LessorOperatingLeasePaymentsToBeReceivedThreeYears
|
2000000 | USD |
CY2019Q4 | us-gaap |
Lessor Operating Lease Payments To Be Received Four Years
LessorOperatingLeasePaymentsToBeReceivedFourYears
|
2000000 | USD |
CY2019Q4 | us-gaap |
Lessor Operating Lease Payments To Be Received Five Years
LessorOperatingLeasePaymentsToBeReceivedFiveYears
|
2000000 | USD |
CY2019Q4 | us-gaap |
Lessor Operating Lease Payments To Be Received Thereafter
LessorOperatingLeasePaymentsToBeReceivedThereafter
|
10000000 | USD |
CY2019Q4 | us-gaap |
Lessor Operating Lease Payments To Be Received
LessorOperatingLeasePaymentsToBeReceived
|
21000000 | USD |
CY2019Q1 | cnp |
Lease Right Of Use Asset
LeaseRightOfUseAsset
|
30000000 | USD |
CY2019Q4 | cnp |
Lessee Operating Lease Not Yet Commenced
LesseeOperatingLeaseNotYetCommenced
|
16000000 | USD |
CY2019 | us-gaap |
Operating Lease Cost
OperatingLeaseCost
|
25000000 | USD |
CY2019 | us-gaap |
Short Term Lease Cost
ShortTermLeaseCost
|
75000000 | USD |
CY2019 | us-gaap |
Variable Lease Cost
VariableLeaseCost
|
1000000 | USD |
CY2019 | us-gaap |
Lease Cost
LeaseCost
|
101000000 | USD |
CY2019 | us-gaap |
Operating Lease Lease Income Lease Payments
OperatingLeaseLeaseIncomeLeasePayments
|
4000000 | USD |
CY2019 | us-gaap |
Operating Lease Variable Lease Income
OperatingLeaseVariableLeaseIncome
|
2000000 | USD |
CY2019 | us-gaap |
Operating Lease Lease Income
OperatingLeaseLeaseIncome
|
6000000 | USD |
CY2019Q4 | us-gaap |
Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
|
63000000 | USD |
CY2019Q4 | cnp |
Lease Right Of Use Asset
LeaseRightOfUseAsset
|
63000000 | USD |
CY2019Q4 | us-gaap |
Operating Lease Liability Current
OperatingLeaseLiabilityCurrent
|
21000000 | USD |
CY2019Q4 | us-gaap |
Operating Lease Liability Noncurrent
OperatingLeaseLiabilityNoncurrent
|
42000000 | USD |
CY2019Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Next Twelve Months
LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
|
22000000 | USD |
CY2019Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Year Two
LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
|
16000000 | USD |
CY2019Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Year Three
LesseeOperatingLeaseLiabilityPaymentsDueYearThree
|
9000000 | USD |
CY2019Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Year Four
LesseeOperatingLeaseLiabilityPaymentsDueYearFour
|
7000000 | USD |
CY2019Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Year Five
LesseeOperatingLeaseLiabilityPaymentsDueYearFive
|
3000000 | USD |
CY2019Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due After Year Five
LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive
|
12000000 | USD |
CY2019Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due
LesseeOperatingLeaseLiabilityPaymentsDue
|
69000000 | USD |
CY2019Q4 | us-gaap |
Lessee Operating Lease Liability Undiscounted Excess Amount
LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
|
6000000 | USD |
CY2019Q4 | us-gaap |
Operating Lease Liability
OperatingLeaseLiability
|
63000000 | USD |
CY2018Q4 | us-gaap |
Operating Leases Future Minimum Payments Due Current
OperatingLeasesFutureMinimumPaymentsDueCurrent
|
6000000 | USD |
CY2018Q4 | us-gaap |
Operating Leases Future Minimum Payments Due In Two Years
OperatingLeasesFutureMinimumPaymentsDueInTwoYears
|
6000000 | USD |
CY2018Q4 | us-gaap |
Operating Leases Future Minimum Payments Due In Three Years
OperatingLeasesFutureMinimumPaymentsDueInThreeYears
|
5000000 | USD |
CY2018Q4 | us-gaap |
Operating Leases Future Minimum Payments Due In Four Years
OperatingLeasesFutureMinimumPaymentsDueInFourYears
|
4000000 | USD |
CY2018Q4 | us-gaap |
Operating Leases Future Minimum Payments Due In Five Years
OperatingLeasesFutureMinimumPaymentsDueInFiveYears
|
3000000 | USD |
CY2018Q4 | us-gaap |
Operating Leases Future Minimum Payments Due Thereafter
OperatingLeasesFutureMinimumPaymentsDueThereafter
|
12000000 | USD |
CY2018Q4 | us-gaap |
Operating Leases Future Minimum Payments Due
OperatingLeasesFutureMinimumPaymentsDue
|
36000000 | USD |
CY2019Q4 | us-gaap |
Lessor Operating Lease Payments To Be Received Next Twelve Months
LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths
|
3000000 | USD |
CY2019 | us-gaap |
Operating Lease Payments
OperatingLeasePayments
|
25000000 | USD |