Consolidated Balance Sheet (Parentheticals) (USD $) In Millions, except Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Accounts receivable, allowance	$ 56	$ 57
Other intangibles, accumulated amortization	535	465
Loaner instrumentation, accumulated amortization	$ 795	$ 684
Common stock, par value	$ 0.10	$ 0.10
Common stock, authorized	1,000	1,000
Common stock, outstanding	381	391