Commitments and Contingencies - Litigation (Details) $ in Millions	1 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended
	Mar. 31, 2011 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Court of Ouargla Foreign Currency Controls
Commitments and Contingencies, Disclosure
Litigation amount as per judgment	$ 23.4
Payment of contract amount in foreign currency	7.5
Payment of contract amount in domestic currency	$ 3.2
Approximate multiplier of the amount at issue for fines and penalties			4
Court of Ouargla Foreign Currency Controls | Maximum
Commitments and Contingencies, Disclosure
Potential judgment in excess of accrual			$ 15.4
Foreign Jurisdiction
Commitments and Contingencies, Disclosure
Payments for settlement		$ 14.7	14.7
KMG Nabors Drilling Company Joint Venture [Member] | Atyrau Oblast Ecology Department
Commitments and Contingencies, Disclosure
Administrative fines			0.8
KMG Nabors Drilling Company Joint Venture [Member] | Atyrau Oblast Ecology Department | Minimum
Commitments and Contingencies, Disclosure
Environmental damages		$ 3.4	$ 3.4
KMG Nabors Drilling Company Joint Venture [Member] | Atyrau Oblast Ecology Department | Forecast | Maximum
Commitments and Contingencies, Disclosure
Additional penalties and fines				$ 4.0