Goodwill - Narrative (Details) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Mar. 31, 2023 segment	Dec. 31, 2023 USD ($) segment	Dec. 31, 2023 USD ($) segment division	Dec. 31, 2022 USD ($)
Goodwill [Line Items]
Number of divisions | division			2
Number of reportable segments | segment	3	4	4
Loss on impairments			$ 327
Accumulated impairment		$ 1,001	1,001	$ 691
Europe Materials Solutions
Goodwill [Line Items]
Loss on impairments			$ 295
Pre-tax discount rate		9.70%	9.70%
Present value		$ 1,022	$ 1,022
Americas Materials Solutions
Goodwill [Line Items]
Loss on impairments			$ 32