Significant Accounting Policies (Details 2)	12 Months Ended
	Dec. 31, 2013
Minimum | Buildings
Property and equipment
Useful life	30 years
Minimum | Data processing equipment
Property and equipment
Useful life	3 years
Minimum | Furniture, fixtures and other equipment
Property and equipment
Useful life	3 years
Minimum | Data processing software
Property and equipment
Useful life	3 years
Minimum | Large printing and inserting equipment | Customer communications
Property and equipment
Useful life	5 years
Minimum | Purchased software
Property and equipment
Useful life	3 years
Minimum | Capitalized software development costs for internal use
Property and equipment
Useful life	3 years
Minimum | Capitalized software development costs for sale or license to third parties
Property and equipment
Useful life	3 years
Maximum | Buildings
Property and equipment
Useful life	40 years
Maximum | Data processing equipment
Property and equipment
Useful life	5 years
Maximum | Furniture, fixtures and other equipment
Property and equipment
Useful life	5 years
Maximum | Data processing software
Property and equipment
Useful life	5 years
Maximum | Large printing and inserting equipment | Customer communications
Property and equipment
Useful life	7 years
Maximum | Purchased software
Property and equipment
Useful life	5 years
Maximum | Capitalized software development costs for internal use
Property and equipment
Useful life	5 years
Maximum | Capitalized software development costs for sale or license to third parties
Property and equipment
Useful life	5 years