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Per the award agreement, vesting may be accelerated to the extent necessary to satisfy tax withholding obligations for retirement-eligible reporting persons and such vested shares shall be disposed to the Issuer for the purposes of satisfying the reporting person's tax withholding obligations, which is an exempt transaction under Rule 16b-3."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Award of restricted stock units which vests on the third anniversary of the grant date.  Per the award agreement, vesting may be accelerated to the extent necessary to satisfy tax withholding obligations for retirement-eligible reporting persons and such vested shares shall be disposed to the Issuer for the purposes of satisfying the reporting person's tax withholding obligations, which is an exempt transaction under Rule 16b-3."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F2","text":"Award of restricted stock units which vests on the third anniversary of the grant date.  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The phantom stock units were acquired at $435.90 per share and vest 50% on June 30 following the award date and 50% on December 31 following the award date or, if earlier, upon retirement, death, disability or change in control.  Settlement in cash or stock (as elected by the director) will occur upon the Reporting Person's retirement or termination of service, except that non-employee directors who have satisfied our stock ownership guidelines may elect to have the payment of awards (together with any dividend equivalents thereon) made on the first business day of April following vesting of the award."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"In accordance with the Amended and Restated Lockheed Martin Corporation Directors' Equity Plan, each non-employee director received an award of phantom stock units, which award is exempt under Rule 16b-3.  The phantom stock units were acquired at $435.90 per share and vest 50% on June 30 following the award date and 50% on December 31 following the award date or, if earlier, upon retirement, death, disability or change in control.  Settlement in cash or stock (as elected by the director) will occur upon the Reporting Person's retirement or termination of service, except that non-employee directors who have satisfied our stock ownership guidelines may elect to have the payment of awards (together with any dividend equivalents thereon) made on the first business day of April following vesting of the award."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"In accordance with the Amended and Restated Lockheed Martin Corporation Directors' Equity Plan, each non-employee director received an award of phantom stock units, which award is exempt under Rule 16b-3.  The phantom stock units were acquired at $435.90 per share and vest 50% on June 30 following the award date and 50% on December 31 following the award date or, if earlier, upon retirement, death, disability or change in control.  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The phantom stock units were acquired at $289.69 per share and vest 50% on June 30 following the award date and 50% on December 31 following the award date or, if earlier, upon retirement, death, disability or change in control.  Settlement in cash or stock (as elected by the director) will occur upon the Reporting Person's retirement or termination of service, except that non-employee directors who have satisfied our stock ownership guidelines may elect to have payment begin on March 30 following vesting of the award."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"In accordance with the Lockheed Martin Corporation Directors' Equity Plan, each non-employee director received an award of phantom stock units, which award is exempt under Rule 16b-3.  The phantom stock units were acquired at $289.69 per share and vest 50% on June 30 following the award date and 50% on December 31 following the award date or, if earlier, upon retirement, death, disability or change in control.  Settlement in cash or stock (as elected by the director) will occur upon the Reporting Person's retirement or termination of service, except that non-employee directors who have satisfied our stock ownership guidelines may elect to have payment begin on March 30 following vesting of the award."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"In accordance with the Lockheed Martin Corporation Directors' Equity Plan, each non-employee director received an award of phantom stock units, which award is exempt under Rule 16b-3.  The phantom stock units were acquired at $289.69 per share and vest 50% on June 30 following the award date and 50% on December 31 following the award date or, if earlier, upon retirement, death, disability or change in control.  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