Investments (Notes)

3 Months Ended

Mar. 31, 2015

Investments, Debt and Equity Securities [Abstract]

Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]

Investments

BNSF holds investments which are classified as trading securities and included in Other Assets on the balance sheet. The following table summarizes the fair value of investments held as of March 31, 2015 and December 31, 2014 (in millions):

	March 31, 2015		December 31, 2014
Debt securities	$	32	$	—
Equity securities	13		—
Total	$	45	$	—

Prior to the quarter-ended March 31, 2015, all investments were primarily held in cash and cash equivalents.

The fair value measurements of BNSF’s debt securities are based on Level 2 inputs and equity securities are based on Level 1 inputs, using a market approach. Unrealized gains and losses recognized in earnings for the period ended March 31, 2015 were less than $1 million.