Derivatives and Fair Value Measurements Fair value transfer timing policy (Policies)

9 Months Ended

Sep. 30, 2016

Fair Value Transfer Timing Policies (Policy) [Abstract]

Derivatives, Policy [Policy Text Block]

Though the symmetrical default provisions associated with the Company's Corporate Hedging derivatives exist at the overall counterparty level across its foreign currency and diesel fuel hedging strategy derivative contract portfolios, the Company's accounting policy is to apply counterparty offsetting separately within those derivative contract portfolios for presentation in the condensed consolidated balance sheets because that application is more consistent with the fact that the Company generally net settles its Corporate Hedging derivatives with each counterparty by derivative contract portfolio on a routine basis.

Fair Value Transfer, Policy [Policy Text Block]

The Company’s policy is to value all transfers between levels using the beginning of period valuation.

The Company’s policy is to value all transfers between levels using the beginning of period valuation.