Changes in Stockholders' Equity (Narrative) (Details) - USD ($)		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cost of goods sold		$ 1,244,600,000	$ 1,354,700,000
Stock repurchase program, authorized amount		1,050,000,000
Stock repurchased and retired during period		60,000,000
Stock repurchase program, outstanding balance authorized to be repurchased		184,200,000
Accelerated Share Repurchase [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock repurchased and retired during period		$ 60,000,000
Stock repurchased and retired during period, shares		974,619
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cost of goods sold	[1]	$ 0	$ 300,000

[1] Losses included within the Condensed Consolidated Statements of Operations for the three months ended March 31, 2016 and 2015.