XML 98 R68.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Fair Value Measurements - Non-recurring Fair Value Measurements for Impairment (Details) |  | 12 Months Ended
--- | --- | ---
Oct. 01, 2023 USD ($) $ / shares | Dec. 31, 2023 USD ($) $ / shares
Southwest |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Estimated selling price (in usd per square foot) | $ |  | $ 235.00
Northeast |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Estimated selling price (in usd per square foot) | $ |  | 227.00
West |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Estimated selling price (in usd per square foot) | $ |  | 30.00
Midwest |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Estimated selling price (in usd per square foot) | $ |  | $ 158.00
Minimum | Other |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Estimated selling price (in usd per square foot) | $ | $ 38.92 |
Maximum | Other |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Estimated selling price (in usd per square foot) | $ | $ 74.07 |
Market rent per square foot | West |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Market rent (in usd per square foot) |  | 21.00
Market rent per square foot | Southeast |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Market rent (in usd per square foot) |  | 14.00
Market rent per square foot | Minimum | Other |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Goodwill, measurement input | 5.00 |
Market rent per square foot | Minimum | Southwest |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Market rent (in usd per square foot) |  | 16.00
Market rent per square foot | Minimum | Northeast |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Market rent (in usd per square foot) |  | 15.00
Market rent per square foot | Maximum | Other |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Goodwill, measurement input | 27.50 |
Market rent per square foot | Maximum | Southwest |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Market rent (in usd per square foot) |  | 27.00
Market rent per square foot | Maximum | Northeast |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Market rent (in usd per square foot) |  | 30.00
Discount rate | West |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Range of inputs (percent) |  | 0.0900
Discount rate | Southeast |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Range of inputs (percent) |  | 0.1500
Discount rate | Minimum | Other |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Goodwill, measurement input | 0.0725 |
Discount rate | Minimum | Southwest |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Range of inputs (percent) |  | 0.0850
Discount rate | Minimum | Northeast |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Range of inputs (percent) |  | 0.0800
Discount rate | Maximum | Other |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Goodwill, measurement input | 0.1500 |
Discount rate | Maximum | Southwest |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Range of inputs (percent) |  | 0.1500
Discount rate | Maximum | Northeast |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Range of inputs (percent) |  | 0.1500
Terminal capitalization rate | West |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Range of inputs (percent) |  | 0.0850
Terminal capitalization rate | Southeast |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Range of inputs (percent) |  | 0.0900
Terminal capitalization rate | Minimum | Other |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Goodwill, measurement input | 0.0625 |
Terminal capitalization rate | Minimum | Southwest |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Range of inputs (percent) |  | 0.0800
Terminal capitalization rate | Minimum | Northeast |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Range of inputs (percent) |  | 0.0650
Terminal capitalization rate | Maximum | Other |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Goodwill, measurement input | 0.0950 |
Terminal capitalization rate | Maximum | Southwest |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Range of inputs (percent) |  | 0.1050
Terminal capitalization rate | Maximum | Northeast |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Range of inputs (percent) |  | 0.0900
Anticipated hold period | Southwest |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Anticipated hold period |  | 1 year
Anticipated hold period | Northeast |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Anticipated hold period |  | 1 year
Anticipated hold period | West |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Anticipated hold period |  | 1 year
Anticipated hold period | Midwest |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Anticipated hold period |  | 1 year

X
- Definition Goodwill, Measurement Input + References No definition available. + Details
Name: | gcnl_GoodwillMeasurementInput
Namespace Prefix: | gcnl_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Real Estate Property, Expected Selling Price Per Square Foot + References No definition available. + Details
Name: | gcnl_RealEstatePropertyExpectedSellingPricePerSquareFoot
Namespace Prefix: | gcnl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Real Estate Property, Measurement Input + References No definition available. + Details
Name: | gcnl_RealEstatePropertyMeasurementInput
Namespace Prefix: | gcnl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Real Estate Property, Measurement Input1 + References No definition available. + Details
Name: | gcnl_RealEstatePropertyMeasurementInput1
Namespace Prefix: | gcnl_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition Real Estate Property, Measurement Input2 + References No definition available. + Details
Name: | gcnl_RealEstatePropertyMeasurementInput2
Namespace Prefix: | gcnl_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_StatementGeographicalAxis=gcnl_SouthwestPropertyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=gcnl_NortheastPropertyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=gcnl_WestPropertyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=gcnl_MidwestPropertyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ReportingUnitAxis=us-gaap_AllOtherSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=gcnl_MeasurementInputMarketRentPerSquareFootMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=gcnl_SoutheastPropertyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputDiscountRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=gcnl_MeasurementInputTerminalCapitalizationRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=gcnl_AnticipatedHoldPeriodMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |