Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Operating Activities
Net income/(loss)	$ (295)	$ 249
Adjustments to reconcile net income/(loss) to net cash provided by operating activities:
Share-based compensation expense	39	21
Currency exchange rate differences on financial transactions and other (gains)/losses	7	11
Equity in net loss of affiliates, net of dividends received	1	2
Depreciation and amortization	550	504
Impairment of goodwill and other long-lived assets	1,004
Changes in operating assets and liabilities, net of effect of businesses acquired and divested:
Trade and other receivables, net	(57)	(48)
Prepaid expenses and other assets	9	(70)
Accounts payable and other current liabilities and deferred revenues	(157)	(190)
Other non-current liabilities	(48)	(6)
Interest payable	49	53
Income taxes	(506)	(14)
Net cash provided by/(used in) operating activities	596	512
Investing Activities
Acquisition of subsidiaries and affiliates, net of cash acquired	(62)	(39)
Additions to property, plant and equipment and other assets	(58)	(66)
Additions to intangible assets	(284)	(305)
Proceeds from the sale of property, plant and equipment and other assets		4
Other investing activities	(18)	3
Net cash provided by/(used in) investing activities	(422)	(403)
Financing Activities
Net borrowings under revolving credit facility	190	204
Proceeds from issuances of debt, net of issuance costs		781
Repayment of debt	(43)	(805)
Increase/(decrease) in other short-term borrowings	(1)	1
Cash dividends paid to shareholders	(373)	(370)
Repurchase of common stock		(70)
Activity from share-based compensation plans	(5)	17
Proceeds from employee stock purchase plan	3	4
Finance leases	(44)	(60)
Other financing activities	(17)	(15)
Net cash provided by/(used in) financing activities	(290)	(313)
Effect of exchange-rate changes on cash and cash equivalents	(19)	(6)
Net increase/(decrease) in cash and cash equivalents	(135)	(210)
Cash and cash equivalents at beginning of period	524	656
Cash and cash equivalents at end of period	389	446
Supplemental Cash Flow Information
Cash paid for income taxes	(181)	(156)
Cash paid for interest, net of amounts capitalized	$ (250)	$ (242)