Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Operating Activities
Net earnings (loss)	$ 473	$ 394
Adjustments to reconcile net earnings to net cash flow provided by operating activities:
Depreciation and amortization	64	68
Stock-based compensation	43	46
Equity in loss of investee companies, net of tax and distributions	22	13
Change in assets and liabilities, net of investing and financing activities	426	(104)
Net cash flow provided by (used for) operating activities	1,028	417
Investing Activities
Acquisitions	(50)	(1)
Capital expenditures	(38)	(17)
Investments in and advances to investee companies	(32)	(39)
Proceeds from dispositions	29	59
Other investing activities	(7)	3
Net cash flow provided by (used for) investing activities from continuing operations	(98)	5
Net cash flow provided by (used for) investing activities from discontinued operations	0	(3)
Net cash flow provided by (used for) investing activities	(98)	2
Financing Activities
Repayments of short-term debt borrowings, net	0	(616)
Proceeds from issuance of senior notes	0	1,178
Repayment of senior debentures	(200)	0
Payment of capital lease obligations	(4)	(4)
Dividends	(73)	(80)
Purchase of Company common stock	(533)	(1,049)
Payment of payroll taxes in lieu of issuing shares for stock-based compensation	(46)	(82)
Proceeds from exercise of stock options	6	80
Excess tax benefit from stock-based compensation	8	57
Net cash flow provided by (used for) financing activities	(842)	(516)
Net increase (decrease) in cash and cash equivalents	88	(97)
Cash and cash equivalents, at beginning of period	323	428
Cash and cash equivalents, at end of period	411	331
Supplemental Cash Flow Information [Abstract]
Cash paid for interest	158	117
Cash paid for income taxes	$ 7	$ 4