| Fair value of financial instruments |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
March 31, 2017
|
|
December 31, 2016
|
|
|
|
Carrying
|
|
Fair
|
|
Carrying
|
|
Fair
|
|
|
|
Value
|
|
Value
|
|
Value
|
|
Value
|
|
|
|
(In thousands)
|
|
(In thousands)
|
|
6.15% senior notes due February 2018
|
|
$
|
665,222
|
|
$
|
690,168
|
|
$
|
827,539
|
|
$
|
865,300
|
|
9.25% senior notes due January 2019
|
|
|
303,489
|
|
|
337,252
|
|
|
303,489
|
|
|
337,443
|
|
5.00% senior notes due September 2020
|
|
|
669,616
|
|
|
694,311
|
|
|
669,540
|
|
|
689,211
|
|
4.625% senior notes due September 2021
|
|
|
694,928
|
|
|
706,658
|
|
|
694,868
|
|
|
708,765
|
|
5.50% senior notes due January 2023
|
|
|
600,000
|
|
|
615,378
|
|
|
600,000
|
|
|
627,000
|
|
5.10% senior notes due September 2023
|
|
|
346,480
|
|
|
351,462
|
|
|
346,448
|
|
|
348,613
|
|
0.75% senior exchangeable notes due January 2024
|
|
|
415,228
|
|
|
388,882
|
|
|
—
|
|
|
—
|
|
Term loan facility
|
|
|
—
|
|
|
—
|
|
|
162,500
|
|
|
162,500
|
|
Revolving credit facility
|
|
|
—
|
|
|
—
|
|
|
—
|
|
|
—
|
|
Commercial paper
|
|
|
—
|
|
|
—
|
|
|
—
|
|
|
—
|
|
Other
|
|
|
313
|
|
|
313
|
|
|
297
|
|
|
297
|
|
|
|
|
3,695,276
|
|
$
|
3,784,424
|
|
|
3,604,681
|
|
$
|
3,739,129
|
|
Less: Deferred financing costs
|
|
|
33,298
|
|
|
|
|
|
26,049
|
|
|
|
|
|
|
$
|
3,661,978
|
|
|
|
|
$
|
3,578,632
|
|
|
|
|