Debt - Narrative (Details) - Transportation and storage of natural gas and NGLs and other services – Boardwalk Pipelines - USD ($) $ in Millions	Mar. 31, 2022	Feb. 28, 2022
3.6 % Senior Notes Due 2032
Debt [Abstract]
Face amount		$ 500
Interest rate		3.60%
4.0% Senior Notes Due 2022
Debt [Abstract]
Face amount	$ 300
Interest rate	4.00%

Face (par) amount of debt instrument at time of issuance.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant