Supplemental Balance Sheet Data (Policies)	3 Months Ended
Supplemental Balance Sheet Data (Policies)	Mar. 31, 2014
Statement of Financial Position [Abstract]
Inventory Policy	We use the LIFO method of valuing inventory for financial reporting purposes for most U.S. inventories. Interim LIFO calculations are based on management's estimates of expected year-end inventory levels and costs. An actual valuation of inventory under the LIFO method is made at the end of each year based on the inventory levels and costs at that time.

Disclosure of accounting policy for major classes of inventories, bases of stating inventories (for example, lower of cost or market), methods by which amounts are added and removed from inventory classes (for example, FIFO, LIFO, or average cost), loss recognition on impairment of inventories, and situations in which inventories are stated above cost. If inventory is carried at cost, this disclosure includes the nature of the cost elements included in inventory.

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