Bonds acquired.

No definition available.

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- Definition

Borrowings listing description.

+ References

No definition available.

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. Supplemental guarantor information.

+ References

No definition available.

+ Details

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- Definition

The amount of bonds issued by the entity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Paragraph 112
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-URIDate 2016-03-31

+ Details

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Balance Type:	credit
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- Definition

The amount of outstanding funds that the entity is obligated to repay.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-URIDate 2016-03-31

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Period Type:	instant

- Definition

The interest rate on borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-IssueDate 2016-01-13
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-URIDate 2016-03-31

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- Definition

The maturity of borrowings. [Refer: Borrowings]

+ References

+ Details

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- Definition

The proportion of ownership interest in a subsidiary attributable to the entity. [Refer: Subsidiaries [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Supplemental Guarantor Information - Additional Information (Detail) $ in Thousands, € in Millions	12 Months Ended
	Dec. 31, 2017 USD ($)	Dec. 31, 2017 EUR (€)	May 31, 2017 USD ($)	Dec. 31, 2016 EUR (€)	Dec. 31, 2010 USD ($)	Jul. 31, 2008 USD ($)	Sep. 30, 2003 USD ($)
Disclosure of supplemental guarantor information [Line Items]
Percentage of ownership interest	100.00%
Notes \| €		€ 7,981		€ 7,790
Bonds acquired			$ 362,130		$ 87,445
Bonds issued		€ 7,602		€ 7,497		$ 650,000	$ 300,000
CRH America Finance, Inc. [member]
Disclosure of supplemental guarantor information [Line Items]
Percentage of ownership interest	100.00%
CRH America, Inc [member] \| 8.125% Notes due 2018 [member]
Disclosure of supplemental guarantor information [Line Items]
Notes	$ 288,000
Notes interest rate	8.125%	8.125%
Notes maturity year	2018
Notes listing description	NYSE
Bonds acquired			$ 362,130
Bonds issued						$ 650,000
CRH America, Inc [member] \| 5.750% Notes due 2021 [member]
Disclosure of supplemental guarantor information [Line Items]
Notes	$ 400,000
Notes interest rate	5.75%	5.75%
Notes maturity year	2021
Notes listing description	NYSE
CRH America, Inc [member] \| 3.875% Notes due 2025 [member]
Disclosure of supplemental guarantor information [Line Items]
Notes	$ 1,250,000
Notes interest rate	3.875%	3.875%
Notes maturity year	2025
Notes listing description	ISE
CRH America, Inc [member] \| 6.40% Notes due 2033 [member]
Disclosure of supplemental guarantor information [Line Items]
Notes	$ 300,000						$ 300,000
Notes interest rate	6.40%	6.40%
Notes maturity year	2033
Notes listing description	ISE
Bonds acquired					$ 87,445
CRH America, Inc [member] \| 5.125 Notes due 2045 [member]
Disclosure of supplemental guarantor information [Line Items]
Notes	$ 500,000
Notes interest rate	5.125%	5.125%
Notes maturity year	2045
Notes listing description	ISE