|
Summary of Depreciation and Amortization Expense by Segment (Detail) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
| Segment Reporting Information [Line Items] | |||
| Depreciation and amortization | $ 590,935 | $ 528,737 | $ 341,969 |
| U.S. dialysis and related lab services | |||
| Segment Reporting Information [Line Items] | |||
| Depreciation and amortization | 402,767 | 355,879 | 310,375 |
| HealthCare Partners (HCP) | |||
| Segment Reporting Information [Line Items] | |||
| Depreciation and amortization | 169,485 | 158,356 | 24,544 |
| Other-Ancillary services and strategic initiatives | |||
| Segment Reporting Information [Line Items] | |||
| Depreciation and amortization | $ 18,683 | $ 14,502 | $ 7,050 |