Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 1,389	$ 1,318	$ 2,812	$ 2,499
Other comprehensive income (loss), net of tax:
Currency translation adjustment	363	(130)	166	17
Net change in fair value of effective portion of cash flow hedges, net of tax of $6 million and $2 million for the three months ended September 30, 2024 and September 30, 2023, respectively; and $8 million and $(1) million for the nine months ended September 30, 2024 and September 30, 2023, respectively	(8)	(20)	(26)	4
Actuarial losses and prior service costs for pension and other postretirement plans, net of tax of $(1) million and $nil million for the three months ended September 30, 2024 and September 30, 2023, respectively; and $nil million and $nil million for the nine months ended September 30, 2024 and September 30, 2023, respectively	(7)	(1)	(8)	(4)
Other comprehensive income (loss)	348	(151)	132	17
Comprehensive income	1,737	1,167	2,944	2,516
Comprehensive (income) attributable to redeemable noncontrolling interests	(9)	(9)	(21)	(21)
Comprehensive (income) loss attributable to noncontrolling interests	(38)	10	(17)	6
Comprehensive income attributable to CRH plc	$ 1,690	$ 1,168	$ 2,906	$ 2,501