Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating Activities
Net income	$ 34	$ 25
Adjustments to reconcile net income to net cash used in operating activities:
Stock-based compensation expense	10	8
Gain on discontinued operations	(1)
Currency exchange rate differences on financial transactions and other losses	30	15
Equity in net loss of affiliates, net of dividends received	2	5
Depreciation and amortization	128	131
Changes in operating assets and liabilities, net of effect of businesses acquired and divested:
Trade and other receivables, net	27	51
Prepaid expenses and other current assets	(31)	(25)
Accounts payable and other current liabilities and deferred revenues	(165)	(227)
Other non-current liabilities	(3)	(1)
Interest payable	27	31
Income taxes payable	(4)	(16)
Net cash provided by/( used in) operating activities	54	(3)
Investing Activities
Acquisition of subsidiaries and affiliates, net of cash acquired	(11)	(16)
Additions to property, plant and equipment and other assets	(9)	(42)
Additions to intangible assets	(61)	(40)
Other investing activities	(1)
Net cash used in investing activities	(82)	(98)
Financing Activities
Net borrowings under revolving credit facility	55	120
Proceeds from issuances of debt, net of issuance costs	1,866	1,209
Repayment of debt	(1,889)	(1,271)
Increase in other short-term borrowings	1	6
Dividends paid	(56)
Activity under stock plans	16	10
Settlement of derivatives and other financing activities	(5)	(4)
Net cash (used in)/provided by financing activities	(12)	70
Effect of exchange-rate changes on cash and cash equivalents	(15)	7
Net decrease in cash and cash equivalents	(55)	(24)
Cash and cash equivalents at beginning of period	288	319
Cash and cash equivalents at end of period	233	295
Supplemental Cash Flow Information
Cash paid for income taxes	(29)	(23)
Cash paid for interest, net of amounts capitalized	$ (56)	$ (75)