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CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (Parenthetical)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2016
USD ($)
$ / shares
Dec. 31, 2015
USD ($)
$ / shares
Statement of Stockholders' Equity [Abstract]    
Common stock, par value (in dollars per share) | $ / shares $ 0.01 $ 0.01
CVR Partner's common units issuance for mergers, tax $ 20.0 $ 20.0
Tax on unrealized gain on available for sale securities $ 0.2 $ 0.2