Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash, cash equivalents, restricted cash and restricted cash equivalents at end of period	$ 1,168	$ 327
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of period	1,017	487
Cash provided by (used for) operating activities
Cash provided by (used for) operating activities	193	(7)
Investing activities:
Purchases of property, plant and equipment	(60)	(112)
Payments for acquisitions of businesses, net of cash acquired	(9)	0
Payments for investments and acquisitions of certain technologies	(103)	(28)
Cash provided by (used for) investing activities	(173)	(140)
Financing activities:
Payments on long-term borrowings	(602)	(250)
Proceeds from long-term borrowings, net of debt issuance and extinguishment costs	990	0
Net increase (decrease) in commercial paper	(316)	0
Payment of contingent consideration amounts previously established in purchase accounting	0	(18)
Proceeds from borrowings on credit facilities	70	1,016
Payments on borrowings from credit facilities	0	(735)
Cash used to net share settle employee equity awards	(50)	(61)
Proceeds from issuances of shares of common stock	38	33
Cash provided by (used for) financing activities	130	(15)
Effect of foreign exchange rates on cash	1	1
Net increase (decrease) in cash, cash equivalents, restricted cash and restricted cash equivalents	151	(161)
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of period	188
Cash, cash equivalents, restricted cash and restricted cash equivalents at end of period	287
Supplemental Information
Stock-based compensation expense	$ 36	$ 30