Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Cash Flows from Operating Activities:
Consolidated net income	$ 374.2	$ 318.5
Adjustments to reconcile consolidated net income to net cash provided by operating activities:
Depreciation and amortization	120.2	96.9
Net change in recoverable customer engineering, development and tooling	22.5	7.4
Net change in working capital items (see below)	(252.6)	(145.3)
Other, net	(27.5)	1.4
Net cash provided by operating activities	236.8	278.9
Cash Flows from Investing Activities:
Additions to property, plant and equipment	(162.8)	(120.8)
Other, net	(25.3)	(7.9)
Net cash used in investing activities	(188.1)	(128.7)
Cash Flows from Financing Activities:
Credit agreement repayments	(1.5)	(6.2)
Short-term borrowings, net	0.0	1.4
Repurchase of common stock	(145.4)	(115.6)
Dividends paid to Lear Corporation stockholders	(50.7)	(36.7)
Dividends paid to noncontrolling interests	(19.2)	(26.5)
Other, net	(55.8)	(41.7)
Net cash used in financing activities	(272.6)	(225.3)
Effect of foreign currency translation	18.0	13.2
Net Change in Cash, Cash Equivalents and Restricted Cash	(205.9)	(61.9)
Cash, Cash Equivalents and Restricted Cash as of Beginning of Period	1,500.4	1,271.6
Cash, Cash Equivalents and Restricted Cash as of End of Period	1,294.5	1,209.7
Changes in Working Capital Items:
Accounts receivable	(460.7)	(526.6)
Inventories	(35.0)	(35.4)
Accounts payable	227.9	374.7
Accrued liabilities and other	15.2	42.0
Net change in working capital items	(252.6)	(145.3)
Supplementary Disclosure
Cash paid for interest	45.6	42.6
Cash paid for income taxes, net of refunds received	$ 63.6	$ 65.1