Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Consolidated Balance Sheets [Abstract]
Allowances for accounts receivable, current	$ 70,094	$ 71,362
Common stock, par value (in dollars per share)	$ 0.25	$ 0.25
Common stock, shares authorized (in shares)	1,750,000,000	1,750,000,000
Common stock, shares outstanding (in shares)	1,002,281,000	999,462,000
Common stock, shares issued (in shares)	1,027,986,000	1,027,986,000