Fair Value Measurements - Summary of Book Value and Principal Amounts of Long-Term Debt (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Book value	$ 790	$ 790
Principal amount of debt	$ 793	$ 793
Senior Debentures 6.900% Due 2028
Debt Instrument [Line Items]
Interest rate	6.90%	6.90%
Debt issuance year	1998	1998
Book value	$ 27	$ 27
Principal amount of debt	$ 28	$ 28
Senior Debentures 6.920% Due 2028
Debt Instrument [Line Items]
Interest rate	6.92%	6.92%
Debt issuance year	2005	2005
Book value	$ 391	$ 391
Principal amount of debt	$ 391	$ 391
Senior Notes 6.125% Due 2034
Debt Instrument [Line Items]
Interest rate	6.125%	6.125%
Debt issuance year	2004	2004
Book value	$ 372	$ 372
Principal amount of debt	$ 374	$ 374