Three months ended
June 30,

Six months ended
June 30,

2011

2010

2011

2010

Net income

$

148,894

$

131,009

$

277,779

$

231,147

Currency translation adjustments

18,701

(35,715

)

42,196

(38,593

)

Revaluation of interest rate derivatives

—

1,061

—

2,073

Defined benefit plan liability adjustment, net of tax

—

92

222

1,059

Total comprehensive income

$

167,595

$

96,447

$

320,197

$

195,686