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Comprehensive Income and Equity - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified | 1 Months Ended | 3 Months Ended | 0 Months Ended
--- | --- | --- | ---
Apr. 25, 2013 | Mar. 29, 2014 | Jun. 29, 2013 | Mar. 30, 2013 | Mar. 31, 2014 Subsequent Event
Stockholders Equity Note [Line Items] |  |  |  |  |
Defined benefit plan adjustments, pension and other postretirement benefit plans |  |  |  | $ 2.6 |
Derivative instruments and hedging activities, reclassified from accumulated other comprehensive income (loss) |  | (1.0) |  | (8.2) |
Accelerated stock repurchase agreement amount | 800 |  |  |  |
Amount paid in accelerated stock repurchase agreement |  |  | 800.0 |  | 855.5
Common stock, repurchased |  | 1,600,000,000 | 11,862,836 |  |
Percentage of treasury stock repurchased |  |  | 80.00% |  |
Value of common stock repurchased, per share |  |  | $ 53.95 |  |
Common stock, additional shares repurchased |  |  |  |  | 658,903
Additional amount paid in accelerated stock repurchase agreement |  |  |  |  | 55.5
Value of common stock repurchased, average price per share |  |  |  |  | $ 72.11
Common stock, share repurchase program amount |  | 694.5 |  |  |
Cash dividends declared per share |  | $ 0.20 |  | $ 0.17 |
Dividends declared to Lear Corporation stockholders |  | 17.2 |  | 16.5 |
Dividends paid to Lear Corporation stockholders |  | $ 17.5 |  | $ 16.2 |

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- Definition The adjustment needed to reconcile previously recorded amounts to the actual aggregate amount paid, whether in cash or other consideration, to acquire all of the shares purchased under an Accelerated Share Repurchase arrangement. + References No definition available. + Details
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- Definition Final price paid per share for the purchase of the targeted number of shares, determined by an average market price over a fixed period of time. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 25 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6405686&loc=d3e22802-112653 + Details
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- Definition The price paid per share to immediately purchase the targeted number of shares on the date of executing the accelerated share repurchase agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 25 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6405686&loc=d3e22802-112653 + Details
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- Definition Amount of cash receipt from (payment to) bank; or stock received from (issuance to) bank in the settlement of the accelerated share repurchase agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 25 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6405686&loc=d3e22802-112653 + Details
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- Definition Amount after tax of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e689-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph c -URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41638-113959 + Details
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