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Debt - Exit Credit Facility (Details) |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 28, 2020 USD ($) | Dec. 31, 2020 USD ($) | Feb. 09, 2021 | Feb. 02, 2021 USD ($) | Dec. 31, 2019 USD ($)
Debt Instrument [Line Items] |  |  |  |  |
Debt, principal |  | $ 9,095,000,000 |  |  | $ 8,916,000,000
Chesapeake revolving credit facility |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Revolving credit, maximum borrowing capacity |  | $ 4,000,000,000.0 |  |  |
Chesapeake revolving credit facility | London interbank offered rate (LIBOR) | Minimum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate |  | 2.50% |  |  |
Chesapeake revolving credit facility | London interbank offered rate (LIBOR) | Maximum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate |  | 3.50% |  |  |
Credit facility | Chesapeake revolving credit facility |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt, principal |  | $ 1,929,000,000 |  |  | $ 1,590,000,000
Credit facility | Exit credit facility |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Revolving credit, maximum borrowing capacity | $ 2,500,000,000 |  |  |  |
LIBOR Floor | 1.00% |  |  |  |
First lien leverage ratio | 2.75 |  |  |  |
Leverage ratio | 3.50 |  |  |  |
Current ratio | 1.00 |  |  |  |
Unused capacity, commitment fee percentage | 0.50% |  |  |  |
Credit facility | Exit credit facility | Subsequent event |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Revolving credit, maximum borrowing capacity |  |  |  | $ 2,500,000,000 |
Credit facility | Exit credit facility | Minimum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Asset coverage ratio | 1.50 |  |  |  |
Credit facility | Exit credit facility | Letter of Credit |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Revolving credit, maximum borrowing capacity | $ 200,000,000.0 |  |  |  |
Credit facility | Exit credit facility | Letter of Credit | Alternative Base Rate | Minimum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate | 2.25% |  |  |  |
Credit facility | Exit credit facility | Letter of Credit | Alternative Base Rate | Maximum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate | 3.25% |  |  |  |
Credit facility | Exit credit facility | Letter of Credit | London interbank offered rate (LIBOR) | Minimum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate | 3.25% |  |  |  |
Credit facility | Exit credit facility | Letter of Credit | London interbank offered rate (LIBOR) | Maximum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate | 4.25% |  |  |  |
Credit facility | Revolving Tranche A | Subsequent event |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Revolving credit, maximum borrowing capacity |  |  |  | 1,750,000,000 |
Credit facility | Revolving Tranche A | Chesapeake revolving credit facility |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Revolving credit, maximum borrowing capacity | $ 1,750,000,000 |  |  |  |
Term | 3 years |  |  |  |
Credit facility | Tranche B Loans |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Revolving credit, maximum borrowing capacity | $ 220,000,000 |  |  |  |
Term | 4 years |  |  |  |
Credit facility | Tranche B Loans | Subsequent event |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Revolving credit, maximum borrowing capacity |  |  |  | 220,000,000 |
Senior notes | 5.5% Senior Notes due 2026 | Subsequent event |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt, principal |  |  |  | $ 500,000,000 |
Interest rate, stated percentage |  |  | 5.50% | 5.50% |
Senior notes | 5.875% Senior Notes due 2029 | Subsequent event |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt, principal |  |  |  | $ 500,000,000 |
Interest rate, stated percentage |  |  | 5.875% | 5.875% |

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