Estimated Fair Value | ||||||||
December 31, | ||||||||
Description | Consolidated Balance Sheet Caption | 2013 | 2012 | |||||
(in millions) | ||||||||
Bankers acceptances | Current assets—other | $ | 35 | $ | 37 | |||
Canadian government securities | Current assets—other | 34 | 39 | |||||
Money market funds | Current assets—other | 3 | — | |||||
Canadian government securities | Investments and other assets—other | 131 | 171 | |||||
Bankers acceptances | Investments and other assets—other | 10 | 15 | |||||
Total held-to-maturity investments | $ | 213 | $ | 262 |