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Condensed Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2012 | Sep. 30, 2011
Comprehensive income (loss) (pretax): |  |  |  |
Net earnings | $ 172,209 | $ 161,470 | $ 299,597 | $ 287,200
Comprehensive income (loss) (tax effect): |  |  |  |
Net earnings | (62,789) | (60,459) | (109,608) | (107,966)
Comprehensive income (loss) (net of tax): |  |  |  |
Net earnings | 109,420 | 101,011 | 189,989 | 179,234
Other comprehensive income (loss): |  |  |  |
Foreign currency translation (pretax) | 3,459 | (6,749) | 1,530 | (5,757)
Foreign currency translation (tax effect) | 0 | 0 | 0 | 0
Foreign currency translation (net of tax) | 3,459 | (6,749) | 1,530 | (5,757)
Unrealized gain (loss) on investments (pretax) | 10,673 | (1,373) | 12,546 | (6,751)
Unrealized gain (loss) on investments (tax effect) | (3,769) | 741 | (4,349) | 2,742
Unrealized gain (loss) on investments (net of tax) | 6,904 | (632) | 8,197 | (4,009)
Change in fair value of cash flow hedges (pretax) | 768 | (12,250) | 253 | (16,110)
Change in fair value of cash flow hedges (tax effect) | (292) | 4,655 | (96) | 6,122
Change in fair value of cash flow hedges (net of tax) | 476 | (7,595) | 157 | (9,988)
Total comprehensive income (loss) (pretax) | 187,109 | 141,098 | 313,926 | 258,582
Total comprehensive income (loss) (tax effect) | (66,850) | (55,063) | (114,053) | (99,102)
Total comprehensive income (loss) (net of tax) | $ 120,259 | $ 86,035 | $ 199,873 | $ 159,480

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