Debt (2022 Revolving Credit Facility - Narrative) (Details)	Apr. 08, 2022 USD ($)	Dec. 22, 2021
Subsequent Event
Debt Instrument [Line Items]
Line of credit facility, expiration period	5 years
2022 Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Line of credit facility, unused capacity, commitment fee percentage		0.15%
2022 Revolving Credit Facility | Minimum | Subsequent Event
Debt Instrument [Line Items]
Line of credit facility, unused capacity, commitment fee percentage	0.375%
2022 Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Line of credit facility, unused capacity, commitment fee percentage		0.275%
Ratio of indebtedness to net capital		0.65
2022 Revolving Credit Facility | Maximum | Subsequent Event
Debt Instrument [Line Items]
Line of credit facility, unused capacity, commitment fee percentage	0.50%
Revolving Credit Facility | 2022 Revolving Credit Facility | Line of Credit | Subsequent Event
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 3,500,000,000
Current borrowing base	$ 2,000,000,000
Minimum current ratio	1.00
Leverage ratio, percentage of credit limit	10.00%
Leverage ratio, amount of credit limit	$ 150,000,000
Revolving Credit Facility | 2022 Revolving Credit Facility | Line of Credit | On Or After June 30, 2020 | Subsequent Event
Debt Instrument [Line Items]
Leverage ratio	4.00
Revolving Credit Facility | 2022 Revolving Credit Facility | Line of Credit | Eurodollar
Debt Instrument [Line Items]
Basis points		0.10%
Debt instrument, discount coverage ratio		9.00%
Revolving Credit Facility | 2022 Revolving Credit Facility | Line of Credit | Eurodollar | Subsequent Event
Debt Instrument [Line Items]
Basis points	0.10%
Revolving Credit Facility | 2022 Revolving Credit Facility | Line of Credit | Fed Funds Effective Rate Overnight Index Swap Rate | Subsequent Event
Debt Instrument [Line Items]
Basis points	0.50%
Revolving Credit Facility | 2022 Revolving Credit Facility | Line of Credit | Base Rate | Subsequent Event
Debt Instrument [Line Items]
Basis points	1.00%
Revolving Credit Facility | 2022 Revolving Credit Facility | Line of Credit | Minimum | Eurodollar
Debt Instrument [Line Items]
Basis points		1.25%
Revolving Credit Facility | 2022 Revolving Credit Facility | Line of Credit | Minimum | Eurodollar | Subsequent Event
Debt Instrument [Line Items]
Basis points	1.75%
Revolving Credit Facility | 2022 Revolving Credit Facility | Line of Credit | Minimum | Base Rate
Debt Instrument [Line Items]
Basis points		0.25%
Revolving Credit Facility | 2022 Revolving Credit Facility | Line of Credit | Minimum | Base Rate | Subsequent Event
Debt Instrument [Line Items]
Basis points	0.75%
Revolving Credit Facility | 2022 Revolving Credit Facility | Line of Credit | Maximum | Eurodollar
Debt Instrument [Line Items]
Basis points		1.875%
Revolving Credit Facility | 2022 Revolving Credit Facility | Line of Credit | Maximum | Eurodollar | Subsequent Event
Debt Instrument [Line Items]
Basis points	2.75%
Revolving Credit Facility | 2022 Revolving Credit Facility | Line of Credit | Maximum | Base Rate
Debt Instrument [Line Items]
Basis points		0.875%
Revolving Credit Facility | 2022 Revolving Credit Facility | Line of Credit | Maximum | Base Rate | Subsequent Event
Debt Instrument [Line Items]
Basis points	1.75%
Revolving Credit Facility | 2022 Revolving Credit Facility | Long-term debt
Debt Instrument [Line Items]
Minimum interest coverage ratio		1.50