Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Statement of Comprehensive Income [Abstract]
Net income	$ 1,519	$ 1,389	$ 2,753	$ 2,812
Other comprehensive (loss) income, net of tax:
Currency translation adjustment	(57)	363	692	166
Net change in fair value of effective portion of cash flow hedges, net of tax of $3 million and $6 million for the three months ended September 30, 2025, and September 30, 2024, respectively; and $2 million and $8 million for the nine months ended September 30, 2025, and September 30, 2024, respectively	21	(8)	(12)	(26)
Actuarial (losses) gains and prior service (costs) credits for pension and other postretirement plans, net of tax of $nil million and $(1) million for the three months ended September 30, 2025, and September 30, 2024, respectively; and $1 million and $nil million for the nine months ended September 30, 2025, and September 30, 2024, respectively	(2)	(7)	(18)	(8)
Other comprehensive (loss) income	(38)	348	662	132
Comprehensive income	1,481	1,737	3,415	2,944
Comprehensive (income) attributable to redeemable noncontrolling interests	(10)	(9)	(18)	(21)
Comprehensive (income) attributable to noncontrolling interests	(4)	(38)	(45)	(17)
Comprehensive income attributable to CRH	$ 1,467	$ 1,690	$ 3,352	$ 2,906