Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Operating Activities
Net earnings (loss)	$ 726,000,000	$ 907,000,000
Net earnings from discontinued operations	0	27,000,000
Net earnings from continuing operations	726,000,000	880,000,000
Adjustments to reconcile net earnings from continuing operations to net cash flow provided by operating activities from continuing operations:
Depreciation and amortization	134,000,000	142,000,000
Stock-based compensation	89,000,000	84,000,000
Equity in loss of investee companies, net of tax and distributions	22,000,000	28,000,000
Change in assets and liabilities, net of investing and financing activities	(90,000,000)	(541,000,000)
Net cash flow provided by (used for) operating activities from continuing operations	881,000,000	593,000,000
Net cash flow provided by (used for) operating activities from discontinued operations	(18,000,000)	31,000,000
Net cash flow provided by (used for) operating activities	863,000,000	624,000,000
Investing Activities
Capital expenditures	(46,000,000)	(69,000,000)
Investments in and advances to investee companies	(55,000,000)	(64,000,000)
Proceeds from sale of investments	0	3,000,000
Proceeds from dispositions	59,000,000	5,000,000
Other investing activities	3,000,000	(1,000,000)
Net cash flow provided by (used for) investing activities from continuing operations	(39,000,000)	(126,000,000)
Net cash flow provided by (used for) investing activities from discontinued operations	(3,000,000)	(23,000,000)
Net cash flow provided by (used for) investing activities	(42,000,000)	(149,000,000)
Financing Activities
Repayments of short-term debt borrowings, net	(222,000,000)	(94,000,000)
Proceeds from issuance of notes, net	1,178,000,000	0
Repayment of notes	0	(99,000,000)
Payment of capital lease obligations	(8,000,000)	(8,000,000)
Dividends	(155,000,000)	(145,000,000)
Purchase of Company common stock	(1,832,000,000)	(2,468,000,000)
Payment of payroll taxes in lieu of issuing shares for stock-based compensation	(95,000,000)	(145,000,000)
Proceeds from exercise of stock options	123,000,000	192,000,000
Excess tax benefit from stock-based compensation	82,000,000	204,000,000
Net cash flow provided by (used for) financing activities from continuing operations	(929,000,000)	(2,563,000,000)
Net cash flow provided by (used for) financing activities from discontinued operations	0	2,175,000,000
Net cash flow provided by (used for) financing activities	(929,000,000)	(388,000,000)
Net increase (decrease) in cash and cash equivalents	(108,000,000)	87,000,000
Cash and cash equivalents, including discontinued operations, at beginning of period	428,000,000	397,000,000
Cash and cash equivalents, including discontinued operations, at end of period	320,000,000	484,000,000
Continuing Operations [Member]
Supplemental Cash Flow [Line Items]
Cash paid for interest	163,000,000	181,000,000
Cash paid for taxes	$ 125,000,000	$ 212,000,000