Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash provided by operating activities:
Net income	$ 300.2	$ 297.1
Non-cash charges to net income:
Depreciation and amortization	147	145
Changes in working capital:
Accounts receivable and prepaid items	(19)	(86)
Inventories	(15)	61
Accounts payable and accrued liabilities	8	(137)
Decrease (increase) in margin accounts	(11)	11
Other	52	71
Cash provided by operating activities	462	362
Cash used for investing activities:
Capital expenditures, net of proceeds on disposals	(187)	(202)
Proceeds from sale of investment	11
Short-term investments	(1)	19
Other		2
Cash used for investing activities	(177)	(181)
Cash used for financing activities:
Proceeds from borrowings	227	20
Payments on debt	(118)	(50)
Repurchases of common stock	(304)	(56)
Issuance of common stock	17	12
Dividends paid (including to non-controlling interests)	(97)	(82)
Excess tax benefit on share-based compensation	5	1
Cash used for financing activities	(270)	(155)
Effect of foreign exchange rate changes on cash	(24)	(17)
Increase (decrease) in cash and cash equivalents	(9)	9
Cash and cash equivalents, beginning of period	574	609
Cash and cash equivalents, end of period	$ 565	$ 618