CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Cash flows from operating activities:
Net income	$ 504	$ 544	$ 421
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	146	175	175
Amortization of debt issuance costs and discounts	3	6	15
Share-based compensation	51	48	45
Deferred income taxes	(40)	(42)	2
Unrealized loss (gain) on forward interest rate swaps	33	19	(8)
Other, net	1	(2)	(5)
Changes in operating assets and liabilities:
Accounts receivable, net	130	(96)	(31)
Inventories, net	(42)	51	(43)
Other assets	11	(20)	(12)
Accounts payable	47	(5)	122
Accrued liabilities	16	(18)	35
Deferred revenue	103	71	51
Income taxes	(5)	(31)	24
Other operating activities	4	(15)	(6)
Net cash provided by operating activities	962	685	785
Cash flows from investing activities:
Acquisition of businesses, net of cash acquired	(548)	(262)	(72)
Purchases of property, plant and equipment	(67)	(61)	(64)
Proceeds from the sale of long-term investments	6	10	2
Purchases of long-term investments	(32)	(22)	(3)
Net cash used in investing activities	(641)	(335)	(137)
Cash flows from financing activities:
Proceeds from issuance of long-term debt	302	637	909
Payments of long term-debt	(342)	(949)	(1,566)
Payments of debt extinguishment costs	0	(1)	(1)
Payments of debt issuance costs and discounts	(1)	(6)	(2)
Payments for repurchases of common stock	(200)	(47)	0
Net payments related to share-based compensation plans	(25)	(32)	(1)
Change in unremitted cash collections from servicing factored receivables	109	33	0
Net cash used in financing activities	(157)	(365)	(661)
Effect of exchange rate changes on cash and cash equivalents, including restricted cash	(2)	1	(5)
Net increase (decrease) in cash and cash equivalents, including restricted cash	162	(14)	(18)
Cash and cash equivalents, including restricted cash, at beginning of period	30	44	62
Cash and cash equivalents, including restricted cash, at end of period	192	30	44
Less restricted cash, included in Prepaid expenses and other current assets	(24)	0	0
Cash and cash equivalents at end of period	168	30	44
Supplemental disclosures of cash flow information:
Income taxes paid	107	140	76
Interest paid	$ 38	$ 63	$ 90