Consolidated Condensed Statements of Cash Flows (Unaudited) (USD $) In Millions	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities:
Net income	$ 539	$ 495
Adjustments to reconcile net cash provided by (used in) operating activities:
Depreciation and amortization	19	18
Pension, health and life insurance contributions	(18)	(18)
Pension, health and life insurance benefits expense	15	16
Deferred income taxes	(5)	13
Share-based compensation	7	5
Excess tax benefits from share-based payment arrangements	(3)
Changes in operating assets and liabilities:
Accounts and other receivables	(2)	(13)
Inventories	(42)	(36)
Accounts payable and accrued liabilities	113	9
Settlement costs	(326)	(332)
Income taxes	(35)	(77)
Other assets	1	5
Net cash provided by operating activities	263	85
Cash flows from investing activities:
Additions to plant and equipment	(26)	(18)
Net cash used in investing activities	(26)	(18)
Cash flows from financing activities:
Proceeds from issuance of long-term debt		1,000
Shares repurchased	(783)	(340)
Dividends paid	(373)	(307)
Debt issuance costs		(13)
Proceeds from exercise of stock options	7
Excess tax benefits from share-based arrangements	3
Net cash (used in) by financing activities	(1,146)	340
Change in cash and cash equivalents	(909)	407
Cash and cash equivalents, beginning of year	2,063	1,384
Cash and cash equivalents, end of period	1,154	1,791
Cash paid for income taxes	352	360
Cash paid for interest, net of cash received from interest rate swaps of $12 and $12	$ 54	$ 21