Business Acquisitions (Details 2) (USD $) In Millions, except Per Share data, unless otherwise specified	9 Months Ended	1 Months Ended
	Sep. 30, 2013	Jan. 31, 2013 Geo Eye Inc	Jan. 31, 2013 Geo Eye Inc Common Stock	Jan. 31, 2013 Geo Eye Inc Series A Convertible Preferred Stock
Total purchase price for the acquisition of GeoEye
Net cash received		$ (76.2)
Cash due to equity holders		0.8
DigitalGlobe equity	837.8		723.8	114.0
DigitalGlobe equity awards issued to replace GeoEye equity awards	13.4	21.6
Long-term debt issued to redeem GeoEye's long-term debt including early termination penalties and accrued interest		596.7
Aggregate purchase price		$ 1,380.7
Fair value of common share issued		$ 27.97