CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income	$ 544	$ 421	$ 17
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	175	175	263
Investment (gain) loss	(3)	(10)	1
Amortization of debt issuance costs and discounts	6	15	38
Share-based compensation	48	45	35
Debt extinguishment costs	1	1	65
Deferred income taxes	(42)	2	(9)
Unrealized loss (gain) on forward interest rate swaps	19	(8)	(2)
Other, net	0	4	4
Changes in operating assets and liabilities:
Accounts receivable, net	(96)	(31)	161
Inventories, net	51	(43)	(110)
Other assets	(20)	(12)	16
Accounts payable	(5)	122	(49)
Accrued liabilities	(18)	35	13
Deferred revenue	71	51	17
Income taxes	(31)	24	26
Other operating activities	(15)	(6)	(8)
Net cash provided by operating activities	685	785	478
Cash flows from investing activities:
Acquisition of businesses, net of cash acquired	(262)	(72)	0
Purchases of property, plant and equipment	(61)	(64)	(50)
Proceeds from the sale of long-term investments	10	2	0
Purchases of long-term investments	(22)	(3)	(1)
Net cash used in investing activities	(335)	(137)	(51)
Cash flows from financing activities:
Proceeds from issuance of long-term debt	637	909	1,371
Payments of long term-debt	(949)	(1,566)	(1,825)
Payments of debt extinguishment costs	(1)	(1)	(65)
Payments of debt issuance costs and discounts	(6)	(2)	(5)
Payments for repurchases of common stock	(47)	0	0
Payments of taxes related to net settlements of equity awards, net of proceeds from exercise of stock options and stock purchase plan purchases	(32)	(1)	7
Unremitted cash collections from servicing factored receivables	33	0	0
Net cash used in financing activities	(365)	(661)	(517)
Effect of exchange rate changes on cash	1	(5)	(4)
Net decrease in cash and cash equivalents	(14)	(18)	(94)
Cash and cash equivalents at beginning of year	44	62	156
Cash and cash equivalents at end of year	30	44	62
Supplemental disclosures of cash flow information:
Income taxes paid	140	76	65
Interest paid	$ 63	$ 90	$ 195