Inventories	3 Months Ended
Mar. 31, 2019
Inventory Disclosure [Abstract]
Inventories	InventoriesInventory costs are determined using the last-in, first-out ("LIFO") method for substantially all U.S. inventories. The current cost of the U.S. inventories under the FIFO method was $452,832 and $380,990 at March 31, 2019 and December 31, 2018, respectively. These FIFO values have been reduced by approximately $84,900 and $85,068 at March 31, 2019 and December 31, 2018, respectively, to arrive at the LIFO value reported on the Condensed Consolidated Balance Sheets. The remaining inventories have been valued under the FIFO method. All LIFO inventories are valued at the lower of cost or market. All other inventories are stated at the lower of cost or net realizable value.

Inventories

3 Months Ended

Mar. 31, 2019

InventoriesInventory costs are determined using the last-in, first-out ("LIFO") method for substantially all U.S. inventories. The current cost of the U.S. inventories under the FIFO method was $452,832 and $380,990 at March 31, 2019 and December 31, 2018, respectively. These FIFO values have been reduced by approximately $84,900 and $85,068 at March 31, 2019 and December 31, 2018, respectively, to arrive at the LIFO value reported on the Condensed Consolidated Balance Sheets. The remaining inventories have been valued under the FIFO method. All LIFO inventories are valued at the lower of cost or market. All other inventories are stated at the lower of cost or net realizable value.