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Debt - Borrowings and Repayments, Letters of Credit (Details) - USD ($) $ in Millions |  | 6 Months Ended |
--- | --- | --- | ---
Mar. 01, 2022 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Debt |  |  |  |
Repayments of senior notes |  | $ 750 |  |
Outstanding letters of credit |  | 34 |  | $ 98
3.65% senior notes due June 2022 | Senior notes |  |  |  |
Debt |  |  |  |
Stated percentage | 3.65% |  |  | 3.65%
Repayments of senior notes | $ 750 |  |  |
Credit facilities and PAA commercial paper program |  |  |  |
Debt |  |  |  |
Total borrowings |  | 16,400 | $ 26,100 |
Total repayments |  | $ 16,300 | $ 26,400 |

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585 + Details
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- Definition The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585 + Details
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