Consolidated Statements of Changes in Equity - USD ($) $ in Millions	Total	Total Shareholders' Equity Attributable to CRH 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, 2021			900,000	774,100,000
Balance at the beginning of the year at Dec. 31, 2021	$ 21,246	$ 20,614	$ 1	$ 309	$ (195)	$ 458	$ (425)	$ 20,466	$ 632
Treasury stock, common, shares beginning balance (in shares) at Dec. 31, 2021					(3,700,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,862	3,862						3,862	0
Other comprehensive loss	(408)	(362)					(362)		(46)
Share-based compensation	101	101				101
Repurchase of common stock (in shares)					(30,000,000.0)
Repurchases of common stock	(1,178)	(1,178)			$ (1,178)
Retirement of treasury stock (in shares)				(22,000,000.0)	(22,000,000.0)
Retirement of treasury stock	0	0		$ (7)	$ 879			(872)
Shares issued under employee share plans (in shares)					4,000,000.0
Shares issued under employee share plans	11	11			$ 197	(116)		(70)
Dividends declared on common stock	(931)	(931)						(931)
Distributions to noncontrolling interests	(8)								(8)
Transactions involving noncontrolling interests	(3)								(3)
Adjustment of redeemable noncontrolling interests to redemption value	40	40						40
Shares, outstanding, ending balance (in shares) at Dec. 31, 2022			900,000	752,100,000
Balance at the end of the year at Dec. 31, 2022	22,732	22,157	$ 1	$ 302	$ (297)	443	(787)	22,495	575
Treasury stock, common, shares ending balance (in shares) at Dec. 31, 2022					(7,700,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,044	3,178						3,178	(134)
Other comprehensive loss	174	171					171		3
Share-based compensation	$ 123	123				123
Repurchase of common stock (in shares)	(54,900,928)				(38,200,000)
Repurchases of common stock	$ (2,019)	(2,019)			$ (2,019)
Retirement of treasury stock (in shares)	(17,620,740)
Repurchases and retirement of common stock (in shares)				(17,600,000)
Repurchases and retirement of common stock	$ (1,048)	(1,048)		$ (6)				(1,042)
Shares issued under employee share plans (in shares)					3,500,000
Shares issued under employee share plans	4	4			$ 117	(112)		(1)
Dividends declared on common stock	(1,688)	(1,688)						(1,688)
Distributions to noncontrolling interests	(8)								(8)
Transactions involving noncontrolling interests	(2)								(2)
Adjustment of redeemable noncontrolling interests to redemption value	(24)	(24)						(24)
Shares, outstanding, ending balance (in shares) at Dec. 31, 2023			900,000	734,500,000
Balance at the end of the year at Dec. 31, 2023	$ 21,288	20,854	$ 1	$ 296	$ (2,199)	454	(616)	22,918	434
Treasury stock, common, shares ending balance (in shares) at Dec. 31, 2023	42,419,281				(42,400,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 3,493	3,492						3,492	1
Other comprehensive loss	(442)	(389)					(389)		(53)
Share-based compensation	$ 125	125				125
Repurchase of common stock (in shares)	(15,872,321)				(2,600,000)
Repurchases of common stock	$ (180)	(180)			$ (180)
Repurchases and retirement of common stock (in shares)				(15,900,000)
Repurchases and retirement of common stock	(1,302)	(1,302)		$ (6)				(1,296)
Shares issued under employee share plans (in shares)					3,600,000
Shares issued under employee share plans	(3)	(3)			$ 242	(157)		(88)
Dividends declared on common stock	(956)	(956)						(956)
Distributions to noncontrolling interests	(30)								(30)
Divestiture of noncontrolling interests	(19)								(19)
Noncontrolling interests arising on acquisition	507								507
Transactions involving noncontrolling interests	19								19
Adjustment of redeemable noncontrolling interests to redemption value	(34)	(34)						(34)
Shares, outstanding, ending balance (in shares) at Dec. 31, 2024			900,000	718,600,000
Balance at the end of the year at Dec. 31, 2024	$ 22,466	$ 21,607	$ 1	$ 290	$ (2,137)	$ 422	$ (1,005)	$ 24,036	$ 859
Treasury stock, common, shares ending balance (in shares) at Dec. 31, 2024	41,355,384				(41,400,000)