Condensed Consolidated Statements of Changes in Equity (Unaudited) - USD ($) $ in Millions	Total	Total Shareholders' Equity Attributable to CRH plc Shareholders	Preferred Stock	Common Stock	Treasury Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Noncontrolling Interests
Shares, outstanding, beginning balance (in shares) at Dec. 31, 2022			900,000	752,100,000
Balance at the beginning of the year at Dec. 31, 2022	$ 22,732	$ 22,157	$ 1	$ 302	$ (297)	$ 443	$ (787)	$ 22,495	$ 575
Treasury stock, common, shares beginning balance (in shares) at Dec. 31, 2022					(7,700,000)
Net loss	(33)	(28)						(28)	(5)
Other comprehensive income	126	114					114		12
Share-based compensation	31	31				31
Repurchase of common stock (in shares)					(5,600,000)
Repurchases of common stock	(246)	(246)			$ (246)
Shares issued under employee share plans (in shares)					1,700,000
Shares issued under employee share plans	1	1			$ 56	(54)		(1)
Dividends declared on common stock	(764)	(764)						(764)
Adjustment of redeemable noncontrolling interests to redemption value	(10)	(10)						(10)
Shares, outstanding, ending balance (in shares) at Mar. 31, 2023			900,000	752,100,000
Balance at the end of the year at Mar. 31, 2023	$ 21,837	21,255	$ 1	$ 302	$ (487)	420	(673)	21,692	582
Treasury stock, common, shares ending balance (in shares) at Mar. 31, 2023	(11,596,581)				(11,600,000)
Shares, outstanding, beginning balance (in shares) at Dec. 31, 2023			900,000	734,500,000
Balance at the beginning of the year at Dec. 31, 2023	$ 21,288	20,854	$ 1	$ 296	$ (2,199)	454	(616)	22,918	434
Treasury stock, common, shares beginning balance (in shares) at Dec. 31, 2023	(42,419,281)				(42,400,000)
Net loss	$ 112	116						116	(4)
Other comprehensive income	(188)	(181)					(181)		(7)
Share-based compensation	30	30				30
Repurchase of common stock (in shares)					(2,600,000)
Repurchases of common stock	(179)	(179)			$ (179)
Retirement of treasury stock (in shares)				(5,000,000.0)
Repurchases and retirement of common stock	(380)	(380)		$ (2)				(378)
Shares issued under employee share plans (in shares)					3,100,000
Shares issued under employee share plans	0				$ 212	(147)		(65)
Dividends declared on common stock	(241)	(241)						(241)
Distributions to noncontrolling interests	(4)								(4)
Divestiture of noncontrolling interests	(18)								(18)
Adjustment of redeemable noncontrolling interests to redemption value	(4)	(4)						(4)
Shares, outstanding, ending balance (in shares) at Mar. 31, 2024			900,000	729,500,000
Balance at the end of the year at Mar. 31, 2024	$ 20,416	$ 20,015	$ 1	$ 294	$ (2,166)	$ 337	$ (797)	$ 22,346	$ 401
Treasury stock, common, shares ending balance (in shares) at Mar. 31, 2024	(41,897,429)				(41,900,000)