Contingencies and Commitments (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Rejuvenate and ABG II Voluntary Recall [Member]	Dec. 31, 2012 OtisKnee Matter [Member]	May 31, 2012 OtisKnee Matter [Member]	Dec. 31, 2012 Minimum [Member] Rejuvenate and ABG II Voluntary Recall [Member]	Dec. 31, 2012 Maximum [Member] Rejuvenate and ABG II Voluntary Recall [Member]
Loss Contingency, Damages Paid, Value	$ 3.75
Loss Contingency, Estimate of Possible Loss							33	190	390
Estimated Litigation Liability					174	33
Operating Leases, Rent Expense		$ 98	$ 96	$ 81