Commitments And Contingencies (Purchase Commitments) ( Details) (Manufacturing And Service Agreement As Part Of Asset Acquisition [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2013
Manufacturing And Service Agreement As Part Of Asset Acquisition [Member]
Long-term Purchase Commitment [Line Items]
Minimum margin to be paid	$ 25.0
Purchase commitment related to NCR acquisition	$ 19.0

The minimum amount the entity agreed to spend under the long-term purchase commitment.

No definition available.

Name:	us-gaap_LongTermPurchaseCommitmentAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration