Employee Retirement Benefits - Defined Contribution Plan (Narrative) (Details) - USD ($)	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Defined Benefit Plan Disclosure
Matching contributions to 401(k) and Top Hat plans	$ 9,000,000	$ 8,000,000
Qualified Pension Plans
Defined Benefit Plan Disclosure
Pension contributions	$ 0

Amount of cash outflow for pension benefit. Includes, but is not limited to, employer contribution to fund plan asset and payment to retiree. Excludes other postretirement benefit.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 25
-Subparagraph (g)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-25

Name:	us-gaap_PensionContributions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration