Noncontrolling Interests Mandatorily Redeemable Partnership Interests (Policies)

12 Months Ended

Dec. 31, 2013

Mandatorily Noncontrolling Partnership Interests [Abstract]

Shares Subject to Mandatory Redemption, Changes in Redemption Value, Policy [Policy Text Block]

The terms of some of our partnership agreements require us to purchase the partner’s equity in the partnership in the event of the partner’s death. We report these redeemable noncontrolling interests at their estimated redemption value, which approximates fair value and classify them as liabilities due to the certainty of the related event. Estimated redemption value is determined using either a contractually stated formula or a discounted cash flow technique, both of which are used as an approximation of fair value. The discounted cash flow inputs used to determine the redemption value are level 3 and include forecasted growth rates, valuation multiples, and the weighted average cost of capital. We recognize changes in the obligation as an interest cost in the consolidated income statement.