Basis of Presentation and Summary of Significant Accounting Policies (Details 4)	1 Months Ended	12 Months Ended
	Jan. 31, 2013 segment	Dec. 31, 2012 segment
Goodwill, Customer Relationships and Other Intangible Assets
Number of operating segments	4	4
Customer relationship | Minimum
Goodwill, Customer Relationships and Other Intangible Assets
Estimated useful life		10 years
Customer relationship | Maximum
Goodwill, Customer Relationships and Other Intangible Assets
Estimated useful life		12 years 6 months
Capitalized software | Maximum
Goodwill, Customer Relationships and Other Intangible Assets
Estimated useful life		7 years
Other Intangible assets
Goodwill, Customer Relationships and Other Intangible Assets
Estimated useful life		4 years