Condensed Consolidated Statements of Earnings and Comprehensive Income (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Sales
Product	$ 3,429us-gaap_SalesRevenueGoodsNet	$ 3,408us-gaap_SalesRevenueGoodsNet
Service	2,528us-gaap_SalesRevenueServicesNet	2,440us-gaap_SalesRevenueServicesNet
Total sales	5,957us-gaap_SalesRevenueNet	5,848us-gaap_SalesRevenueNet
Operating costs and expenses
Product	2,542us-gaap_CostOfGoodsSold	2,533us-gaap_CostOfGoodsSold
Service	2,000us-gaap_CostOfServices	1,928us-gaap_CostOfServices
General and administrative expenses	635us-gaap_GeneralAndAdministrativeExpense	542us-gaap_GeneralAndAdministrativeExpense
Operating income	780us-gaap_OperatingIncomeLoss	845us-gaap_OperatingIncomeLoss
Other (expense) income
Interest expense	(76)us-gaap_InterestAndDebtExpense	(69)us-gaap_InterestAndDebtExpense
Other, net	0us-gaap_OtherNonoperatingIncomeExpense	10us-gaap_OtherNonoperatingIncomeExpense
Earnings before income taxes	704	786
Federal and foreign income tax expense	220us-gaap_IncomeTaxExpenseBenefit	207us-gaap_IncomeTaxExpenseBenefit
Net earnings	484us-gaap_NetIncomeLoss	579us-gaap_NetIncomeLoss
Basic earnings per share
Basic earnings per share	$ 2.45us-gaap_EarningsPerShareBasic	$ 2.68us-gaap_EarningsPerShareBasic
Weighted-average common shares outstanding, in millions	197.7	216.3
Diluted earnings per share
Diluted earnings per share	$ 2.41us-gaap_EarningsPerShareDiluted	$ 2.63us-gaap_EarningsPerShareDiluted
Weighted-average diluted shares outstanding, in millions	200.5	220.4
Net earnings (from above)	484us-gaap_NetIncomeLoss	579us-gaap_NetIncomeLoss
Change in unamortized benefit plan costs, net of tax	96	61
Change in cumulative translation adjustment	(29)	2
Other, net	(1)	0
Other comprehensive income, net of tax	66	63
Comprehensive income	$ 550us-gaap_ComprehensiveIncomeNetOfTax	$ 642us-gaap_ComprehensiveIncomeNetOfTax

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