XML 67 R56.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Long-Term Debt and Short-Term Borrowings - Schedule of Long-Term Debt (Parenthetical) (Detail) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2018 | Dec. 31, 2017
Senior secured term loans [Member] |  |
Debt Instrument [Line Items] |  |
Maturity date of debt, end | Dec. 31, 2022 | Dec. 31, 2022
Senior secured term loans [Member] | Minimum [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate of long-term debt | 2.51% | 2.51%
Senior secured term loans [Member] | Maximum [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate of long-term debt | 3.07% | 3.07%
4.875% Senior Notes [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate of long-term debt | 4.875% | 4.875%
Due date of long-term debt | 2026 | 2026
5.25% Senior Notes [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate of long-term debt | 5.25% | 5.25%
Due date of long-term debt | 2025 | 2025
5.00% Senior Notes [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate of long-term debt | 5.00% | 5.00%
Redemption date | Mar. 15, 2018 | Mar. 15, 2018

X
- Definition Debt Instrument Maturity Date Year + References No definition available. + Details
Name: | cbg_DebtInstrumentMaturityDateYear
Namespace Prefix: | cbg_
Data Type: | xbrli:gYearItemType
Balance Type: | na
Period Type: | duration

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Latest date the outstanding debt instruments are required to be repaid, in CCYY-MM-DD format. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentMaturityDateRangeEnd1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Date the debt instrument was repurchased, in CCYY-MM-DD format. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentRepurchaseDate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cbg_FourPointEightSevenFiveSeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cbg_FivePointTwoFivePercentSeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=cbg_FivePercentSeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |