Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash provided by operating activities
Net income	$ 311	$ 357
Non-cash charges to net income:
Depreciation and amortization	158	188
Mechanical stores expense	42	43
Deferred income taxes	2	(20)
Other	21	33
Changes in working capital:
Accounts receivable and prepaid expenses	(56)	14
Inventories	(71)	(73)
Accounts payable and accrued liabilities	76	(1)
Margin accounts	(4)	6
Other	11	32
Cash provided by operating activities	490	579
Cash used for investing activities
Capital expenditures and mechanical stores purchases	(231)	(234)
Payments for acquisitions, net of cash acquired of $ 4 and $ - , respectively	(42)
Investment in a non-consolidated affiliate	(10)
Short-term investments	4	2
Other	1	2
Cash used for investing activities	(278)	(230)
Cash used for financing activities
Proceeds from borrowings	839	272
Payments on debt	(858)	(453)
Repurchases of common stock, net	63	(177)
Issuances of common stock for share-based compensation, net of settlements	1	(2)
Dividends paid, including to non-controlling interests	(131)	(137)
Cash used for financing activities	(86)	(497)
Effects of foreign exchange rate changes on cash	(10)	(16)
Increase (decrease) in cash and cash equivalents	116	(164)
Cash and cash equivalents, beginning of period	327	595
Cash and cash equivalents, end of period	$ 443	$ 431