Income Taxes	3 Months Ended
Mar. 31, 2021
Income Tax Disclosure [Abstract]
Income Taxes	13. Income Taxes For the three months ended March 31, 2021, we recorded an income tax expense of $17 million on pre-tax income of $616 million compared to an income tax benefit of $180 million on pre-tax loss of $2,486 million for the three months ended March 31, 2020. Our effective income tax rate was 2.8% and 7.2% for the three months ended March 31, 2021 and 2020, respectively. For the three months ended March 31, 2021, the effective tax rate was lower than the statutory federal rate of 21%, primarily due to partnership income for which there was no tax expense, as such loss is allocated to the partners. For the three months ended March 31, 2020, the effective tax rate was lower than the statutory federal rate of 21%, primarily due to partnership loss for which there was no tax benefit, as such loss is allocated to the partners.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-URI http://asc.fasb.org/topic&trid=2144680

Name:	us-gaap_IncomeTaxDisclosureTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration