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Related Party Transactions - Summary of Dividends (Details) - USD ($) $ / shares in Units, $ in Millions |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
May 26, 2020 | Mar. 09, 2020 | Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
Related Party Transaction [Line Items] |  |  |  |  |
Dividends declared per share (in dollars per share) |  |  | $ 0 |  |
Dividend Per Share (in dollars per share) | $ 0.40 | $ 0.80 | $ 0 | $ 0.80 | $ 1.20
Dividends Paid | $ 40 | $ 80 | $ 0 | $ 80 | $ 121
CVR Partners |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Distributions declared (in dollars per share) |  |  | $ 0 |  |
Distributions paid (in dollars per share) |  |  | $ 0 |  |
IEP |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Dividends Paid | 28 | 57 | $ 0 | $ 57 | 85
Stockholders |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Dividends Paid | $ 12 | $ 23 |  |  | $ 35

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- Definition Per unit of ownership amount of cash distributions declared to unit-holder of a limited partnership (LP). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 + Details
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- Definition Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585 + Details
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