Information By Segment and Geographic Region (Corporate Related Expenses And Assets) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Business Segments Information Abstract
Capital Expenditures	$ 181	$ 169	$ 170
Depreciation Expense	169	157	150
Products
Business Segments Information Abstract
Capital Expenditures	87	90	90
Depreciation Expense	94	93	87
Services
Business Segments Information Abstract
Capital Expenditures	94	79	80
Depreciation Expense	75	64	63
Aggregate Segment
Business Segments Information Abstract
Capital Expenditures	$ 181	$ 169	$ 170